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| | yjjK | Putative ATP-binding component of a transport system; Code: R; COG: COG0488. (555 aa) |
| | lplA | Lipoate-protein ligase A; Catalyzes both the ATP-dependent activation of exogenously supplied lipoate to lipoyl-AMP and the transfer of the activated lipoyl onto the lipoyl domains of lipoate-dependent enzymes. (338 aa) |
| | prfC | Peptide chain release factor RF-3; Increases the formation of ribosomal termination complexes and stimulates activities of RF-1 and RF-2. It binds guanine nucleotides and has strong preference for UGA stop codons. It may interact directly with the ribosome. The stimulation of RF-1 and RF-2 is significantly reduced by GTP and GDP, but not by GMP. Belongs to the TRAFAC class translation factor GTPase superfamily. Classic translation factor GTPase family. PrfC subfamily. (529 aa) |
| | rimI | Acyltransferase for 30S ribosomal subunit protein S18; Acetylates the N-terminal alanine of ribosomal protein S18. (148 aa) |
| | yjjT | Putative enzyme; Specifically methylates the guanine in position 1207 of 16S rRNA in the 30S particle; Belongs to the methyltransferase superfamily. RsmC family. (343 aa) |
| | yjbN | Conserved hypothetical protein; Catalyzes the synthesis of 5,6-dihydrouridine (D), a modified base found in the D-loop of most tRNAs, via the reduction of the C5-C6 double bond in target uridines. Specifically modifies U20 and U20a in tRNAs; Belongs to the Dus family. DusA subfamily. (345 aa) |
| | yjeS | Conserved hypothetical protein; Catalyzes the conversion of epoxyqueuosine (oQ) to queuosine (Q), which is a hypermodified base found in the wobble positions of tRNA(Asp), tRNA(Asn), tRNA(His) and tRNA(Tyr); Belongs to the QueG family. (379 aa) |
| | yjeE | Conserved hypothetical protein; Code: R; COG: COG0802; orf. (153 aa) |
| | miaA | Delta(2)-isopentenylpyrophosphate tRNA-adenosine transferase; Catalyzes the transfer of a dimethylallyl group onto the adenine at position 37 in tRNAs that read codons beginning with uridine, leading to the formation of N6-(dimethylallyl)adenosine (i(6)A); Belongs to the IPP transferase family. (316 aa) |
| | yjfH | Conserved hypothetical protein; Specifically methylates the ribose of guanosine 2251 in 23S rRNA; Belongs to the class IV-like SAM-binding methyltransferase superfamily. RNA methyltransferase TrmH family. RlmB subfamily. (243 aa) |
| | yjeA | Putative lysyl-tRNA synthetase; With EpmB is involved in the beta-lysylation step of the post-translational modification of translation elongation factor P (EF- P) on 'Lys-34'. Catalyzes the ATP-dependent activation of (R)-beta- lysine produced by EpmB, forming a lysyl-adenylate, from which the beta-lysyl moiety is then transferred to the epsilon-amino group of EF- P 'Lys-34'; Belongs to the class-II aminoacyl-tRNA synthetase family. EpmA subfamily. (335 aa) |
| | efp | Elongation factor P; Involved in peptide bond synthesis. Alleviates ribosome stalling that occurs when 3 or more consecutive Pro residues or the sequence PPG is present in a protein, possibly by augmenting the peptidyl transferase activity of the ribosome. Modification of Lys-34 is required for alleviation; Belongs to the elongation factor P family. (188 aa) |
| | rplI | 50S ribosomal subunit protein L9; Binds to the 23S rRNA. (149 aa) |
| | rpsR | 30S ribosomal subunit protein S18; Binds as a heterodimer with protein S6 to the central domain of the 16S rRNA, where it helps stabilize the platform of the 30S subunit; Belongs to the bacterial ribosomal protein bS18 family. (75 aa) |
| | rpsF | 30S ribosomal subunit protein S6; Binds together with S18 to 16S ribosomal RNA. (131 aa) |
| | glyS | Glycine tRNA synthetase, beta subunit; Code: J; COG: COG0751. (689 aa) |
| | glyQ | Glycine tRNA synthetase, alpha subunit; Code: J; COG: COG0752. (303 aa) |
| | yjbC | Conserved hypothetical protein; Code: J; COG: COG1187; orf; Belongs to the pseudouridine synthase RsuA family. (290 aa) |
| | fecI | Probable RNA polymerase sigma factor; Code: K; COG: COG1595; Belongs to the sigma-70 factor family. ECF subfamily. (173 aa) |
| | valS | Valine tRNA synthetase; Catalyzes the attachment of valine to tRNA(Val). As ValRS can inadvertently accommodate and process structurally similar amino acids such as threonine, to avoid such errors, it has a 'posttransfer' editing activity that hydrolyzes mischarged Thr-tRNA(Val) in a tRNA- dependent manner; Belongs to the class-I aminoacyl-tRNA synthetase family. ValS type 1 subfamily. (951 aa) |
| | selB | selenocysteinyl-tRNA-specific translation factor; Code: J; COG: COG3276. (614 aa) |
| | selA | Selenocysteine synthase; Converts seryl-tRNA(Sec) to selenocysteinyl-tRNA(Sec) required for selenoprotein biosynthesis; Belongs to the SelA family. (463 aa) |
| | thdF | GTP-binding protein; Exhibits a very high intrinsic GTPase hydrolysis rate. Involved in the addition of a carboxymethylaminomethyl (cmnm) group at the wobble position (U34) of certain tRNAs, forming tRNA- cmnm(5)s(2)U34; Belongs to the TRAFAC class TrmE-Era-EngA-EngB-Septin-like GTPase superfamily. TrmE GTPase family. (454 aa) |
| | rnpA | RNase P, protein component; RNaseP catalyzes the removal of the 5'-leader sequence from pre-tRNA to produce the mature 5'-terminus. It can also cleave other RNA substrates such as 4.5S RNA. The protein component plays an auxiliary but essential role in vivo by binding to the 5'-leader sequence and broadening the substrate specificity of the ribozyme. (119 aa) |
| | rpmH | 50S ribosomal subunit protein L34; Code: J; COG: COG0230; Belongs to the bacterial ribosomal protein bL34 family. (46 aa) |
| | spoU | Putative RNA methylase; Catalyzes the 2'-O methylation of guanosine at position 18 in tRNA; Belongs to the class IV-like SAM-binding methyltransferase superfamily. RNA methyltransferase TrmH family. (229 aa) |
| | rpoZ | DNA-directed RNA polymerase omega chain; Promotes RNA polymerase assembly. Latches the N- and C- terminal regions of the beta' subunit thereby facilitating its interaction with the beta and alpha subunits. (91 aa) |
| | rph | RNase PH; Phosphorolytic 3'-5' exoribonuclease that plays an important role in tRNA 3'-end maturation. Removes nucleotide residues following the 3'-CCA terminus of tRNAs; can also add nucleotides to the ends of RNA molecules by using nucleoside diphosphates as substrates, but this may not be physiologically important. Probably plays a role in initiation of 16S rRNA degradation (leading to ribosome degradation) during starvation. (238 aa) |
| | rpmB | 50S ribosomal subunit protein L28; Code: J; COG: COG0227; Belongs to the bacterial ribosomal protein bL28 family. (78 aa) |
| | rpmG | 50S ribosomal subunit protein L33; Code: J; COG: COG0267; Belongs to the bacterial ribosomal protein bL33 family. (55 aa) |
| | yibK | Conserved hypothetical protein; Methylates the ribose at the nucleotide 34 wobble position in the two leucyl isoacceptors tRNA(Leu)(CmAA) and tRNA(Leu)(cmnm5UmAA). Catalyzes the methyl transfer from S-adenosyl-L-methionine to the 2'-OH of the wobble nucleotide. (157 aa) |
| | gidB | GldB; Specifically methylates the N7 position of guanine in position 527 of 16S rRNA. (207 aa) |
| | gidA | Glucose-inhibited division; NAD-binding protein involved in the addition of a carboxymethylaminomethyl (cmnm) group at the wobble position (U34) of certain tRNAs, forming tRNA-cmnm(5)s(2)U34; Belongs to the MnmG family. (629 aa) |
| | rho | Transcription termination factor Rho; Facilitates transcription termination by a mechanism that involves Rho binding to the nascent RNA, activation of Rho's RNA- dependent ATPase activity, and release of the mRNA from the DNA template. (419 aa) |
| | rpmE | 50S ribosomal subunit protein L31; Binds the 23S rRNA. (70 aa) |
| | trmA | tRNA (uracil-5-)-methyltransferase; Dual-specificity methyltransferase that catalyzes the formation of 5-methyluridine at position 54 (m5U54) in all tRNAs, and that of position 341 (m5U341) in tmRNA (transfer-mRNA). (366 aa) |
| | nusG | Component in transcription antitermination; Participates in transcription elongation, termination and antitermination. In the absence of Rho, increases the rate of transcription elongation by the RNA polymerase (RNAP), probably by partially suppressing pausing. In the presence of Rho, modulates most Rho-dependent termination events by interacting with the RNAP to render the complex more susceptible to the termination activity of Rho. May be required to overcome a kinetic limitation of Rho to function at certain terminators. Also involved in ribosomal RNA transcriptional antitermination [...] (181 aa) |
| | rplK | 50S ribosomal subunit protein L11; Forms part of the ribosomal stalk which helps the ribosome interact with GTP-bound translation factors. (142 aa) |
| | rplA | 50S ribosomal subunit protein L1; Binds directly to 23S rRNA. The L1 stalk is quite mobile in the ribosome, and is involved in E site tRNA release. (234 aa) |
| | rplJ | 50S ribosomal subunit protein L10; Forms part of the ribosomal stalk, playing a central role in the interaction of the ribosome with GTP-bound translation factors. Belongs to the universal ribosomal protein uL10 family. (165 aa) |
| | rplL | 50S ribosomal subunit protein L7/L12; Forms part of the ribosomal stalk which helps the ribosome interact with GTP-bound translation factors. Is thus essential for accurate translation; Belongs to the bacterial ribosomal protein bL12 family. (121 aa) |
| | rpoB | RNA polymerase, beta subunit; DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. (1342 aa) |
| | rpoC | RNA polymerase, beta prime subunit; DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. (1407 aa) |
| | trpS | Tryptophan tRNA synthetase; Catalyzes the attachment of tryptophan to tRNA(Trp). Belongs to the class-I aminoacyl-tRNA synthetase family. (334 aa) |
| | greB | Transcription elongation factor; Necessary for efficient RNA polymerase transcription elongation past template-encoded arresting sites. The arresting sites in DNA have the property of trapping a certain fraction of elongating RNA polymerases that pass through, resulting in locked ternary complexes. Cleavage of the nascent transcript by cleavage factors such as GreA or GreB allows the resumption of elongation from the new 3'terminus. GreB releases sequences of up to 9 nucleotides in length. (158 aa) |
| | yhgI | Conserved hypothetical protein; Involved in iron-sulfur cluster biogenesis. Binds a 4Fe-4S cluster, can transfer this cluster to apoproteins, and thereby intervenes in the maturation of Fe/S proteins. Could also act as a scaffold/chaperone for damaged Fe/S proteins. (191 aa) |
| | yhgKJ | RNA phosphate cyclase; Catalyzes the conversion of 3'-phosphate to a 2',3'-cyclic phosphodiester at the end of RNA. The mechanism of action of the enzyme occurs in 3 steps: (A) adenylation of the enzyme by ATP; (B) transfer of adenylate to an RNA-N3'P to produce RNA-N3'PP5'A; (C) and attack of the adjacent 2'-hydroxyl on the 3'-phosphorus in the diester linkage to produce the cyclic end product. The biological role of this enzyme is unknown but it is likely to function in some aspects of cellular RNA processing. (343 aa) |
| | yhhP | Conserved hypothetical protein; Sulfur carrier protein involved in sulfur trafficking in the cell. Part of a sulfur-relay system required for 2-thiolation during synthesis of 2-thiouridine of the modified wobble base 5- methylaminomethyl-2-thiouridine (mnm(5)s(2)U) in tRNA. Interacts with IscS and stimulates its cysteine desulfurase activity. Accepts an activated sulfur from IscS, which is then transferred to TusD, and thus determines the direction of sulfur flow from IscS to 2-thiouridine formation. Also appears to be involved in sulfur transfer for the biosynthesis of molybdopterin. (81 aa) |
| | yhhF | Conserved hypothetical protein; Specifically methylates the guanine in position 966 of 16S rRNA in the assembled 30S particle; Belongs to the methyltransferase superfamily. RsmD family. (198 aa) |
| | rpoH | RNA polymerase, sigma(32) factor; Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. This sigma factor is involved in regulation of expression of heat shock genes. (284 aa) |
| | yhhK | Conserved hypothetical protein; Controls both the activation and catalytic activity of PanD in a coenzyme A (CoA)-dependent fashion; Belongs to the PanZ/PanM family. (127 aa) |
| | yhiQ | Conserved hypothetical protein; Specifically methylates the guanosine in position 1516 of 16S rRNA. (250 aa) |
| | yhiR | Conserved hypothetical protein; Specifically methylates the adenine in position 2030 of 23S rRNA. (280 aa) |
| | yheN | Conserved hypothetical protein; Part of a sulfur-relay system required for 2-thiolation of 5- methylaminomethyl-2-thiouridine (mnm(5)s(2)U) at tRNA wobble positions. Accepts sulfur from TusA and transfers it in turn to TusE. (128 aa) |
| | yheM | Conserved hypothetical protein; Part of a sulfur-relay system required for 2-thiolation of 5- methylaminomethyl-2-thiouridine (mnm(5)s(2)U) at tRNA wobble positions. (119 aa) |
| | yheL | Conserved hypothetical protein; Part of a sulfur-relay system required for 2-thiolation of 5- methylaminomethyl-2-thiouridine (mnm(5)s(2)U) at tRNA wobble positions. (95 aa) |
| | rpsL | 30S ribosomal subunit protein S12; With S4 and S5 plays an important role in translational accuracy. (124 aa) |
| | rpsG | 30S ribosomal subunit protein S7; One of the primary rRNA binding proteins, it binds directly to 16S rRNA where it nucleates assembly of the head domain of the 30S subunit. Is located at the subunit interface close to the decoding center, probably blocks exit of the E-site tRNA; Belongs to the universal ribosomal protein uS7 family. (156 aa) |
| | fusA | GTP-binding protein chain elongation factor EF-G; Catalyzes the GTP-dependent ribosomal translocation step during translation elongation. During this step, the ribosome changes from the pre-translocational (PRE) to the post-translocational (POST) state as the newly formed A-site-bound peptidyl-tRNA and P-site-bound deacylated tRNA move to the P and E sites, respectively. Catalyzes the coordinated movement of the two tRNA molecules, the mRNA and conformational changes in the ribosome; Belongs to the TRAFAC class translation factor GTPase superfamily. Classic translation factor GTPase fa [...] (704 aa) |
| | tufA | Protein chain elongation factor EF-Tu; This protein promotes the GTP-dependent binding of aminoacyl- tRNA to the A-site of ribosomes during protein biosynthesis. (394 aa) |
| | rpsJ | 30S ribosomal subunit protein S10; Involved in the binding of tRNA to the ribosomes. Belongs to the universal ribosomal protein uS10 family. (103 aa) |
| | rplC | 50S ribosomal subunit protein L3; One of the primary rRNA binding proteins, it binds directly near the 3'-end of the 23S rRNA, where it nucleates assembly of the 50S subunit. (209 aa) |
| | rplD | 50S ribosomal subunit protein L4; One of the primary rRNA binding proteins, this protein initially binds near the 5'-end of the 23S rRNA. It is important during the early stages of 50S assembly. It makes multiple contacts with different domains of the 23S rRNA in the assembled 50S subunit and ribosome. (201 aa) |
| | rplW | 50S ribosomal subunit protein L23; One of the early assembly proteins it binds 23S rRNA. One of the proteins that surrounds the polypeptide exit tunnel on the outside of the ribosome. Forms the main docking site for trigger factor binding to the ribosome; Belongs to the universal ribosomal protein uL23 family. (100 aa) |
| | rplB | 50S ribosomal subunit protein L2; One of the primary rRNA binding proteins. Required for association of the 30S and 50S subunits to form the 70S ribosome, for tRNA binding and peptide bond formation. It has been suggested to have peptidyltransferase activity; this is somewhat controversial. Makes several contacts with the 16S rRNA in the 70S ribosome. Belongs to the universal ribosomal protein uL2 family. (273 aa) |
| | rpsS | 30S ribosomal subunit protein S19; Protein S19 forms a complex with S13 that binds strongly to the 16S ribosomal RNA. (92 aa) |
| | rplV | 50S ribosomal subunit protein L22; This protein binds specifically to 23S rRNA; its binding is stimulated by other ribosomal proteins, e.g. L4, L17, and L20. It is important during the early stages of 50S assembly. It makes multiple contacts with different domains of the 23S rRNA in the assembled 50S subunit and ribosome (By similarity). (110 aa) |
| | rpsC | 30S ribosomal subunit protein S3; Binds the lower part of the 30S subunit head. Binds mRNA in the 70S ribosome, positioning it for translation; Belongs to the universal ribosomal protein uS3 family. (233 aa) |
| | rplP | 50S ribosomal subunit protein L16; Binds 23S rRNA and is also seen to make contacts with the A and possibly P site tRNAs; Belongs to the universal ribosomal protein uL16 family. (136 aa) |
| | rpmC | 50S ribosomal subunit protein L29; Code: J; COG: COG0255; Belongs to the universal ribosomal protein uL29 family. (63 aa) |
| | rpsQ | 30S ribosomal subunit protein S17; One of the primary rRNA binding proteins, it binds specifically to the 5'-end of 16S ribosomal RNA. (84 aa) |
| | rplN | 50S ribosomal subunit protein L14; Binds to 23S rRNA. Forms part of two intersubunit bridges in the 70S ribosome; Belongs to the universal ribosomal protein uL14 family. (123 aa) |
| | rplX | 50S ribosomal subunit protein L24; One of two assembly initiator proteins, it binds directly to the 5'-end of the 23S rRNA, where it nucleates assembly of the 50S subunit. (104 aa) |
| | rplE | 50S ribosomal subunit protein L5; This is 1 of the proteins that binds and probably mediates the attachment of the 5S RNA into the large ribosomal subunit, where it forms part of the central protuberance. In the 70S ribosome it contacts protein S13 of the 30S subunit (bridge B1b), connecting the 2 subunits; this bridge is implicated in subunit movement. Contacts the P site tRNA; the 5S rRNA and some of its associated proteins might help stabilize positioning of ribosome-bound tRNAs. (179 aa) |
| | rpsN | 30S ribosomal subunit protein S14; Binds 16S rRNA, required for the assembly of 30S particles and may also be responsible for determining the conformation of the 16S rRNA at the A site; Belongs to the universal ribosomal protein uS14 family. (101 aa) |
| | rpsH | 30S ribosomal subunit protein S8, and regulator; One of the primary rRNA binding proteins, it binds directly to 16S rRNA central domain where it helps coordinate assembly of the platform of the 30S subunit; Belongs to the universal ribosomal protein uS8 family. (130 aa) |
| | rplF | 50S ribosomal subunit protein L6; This protein binds to the 23S rRNA, and is important in its secondary structure. It is located near the subunit interface in the base of the L7/L12 stalk, and near the tRNA binding site of the peptidyltransferase center; Belongs to the universal ribosomal protein uL6 family. (177 aa) |
| | rplR | 50S ribosomal subunit protein L18; This is one of the proteins that binds and probably mediates the attachment of the 5S RNA into the large ribosomal subunit, where it forms part of the central protuberance. (117 aa) |
| | rpsE | 30S ribosomal subunit protein S5; With S4 and S12 plays an important role in translational accuracy; Belongs to the universal ribosomal protein uS5 family. (167 aa) |
| | rpmD | 50S ribosomal subunit protein L30; Code: J; COG: COG1841. (59 aa) |
| | rplO | 50S ribosomal subunit protein L15; Binds to the 23S rRNA; Belongs to the universal ribosomal protein uL15 family. (144 aa) |
| | rpmJ | 50S ribosomal subunit protein L36; Code: J; COG: COG0257; Belongs to the bacterial ribosomal protein bL36 family. (38 aa) |
| | rpsM | 30S ribosomal subunit protein S13; Located at the top of the head of the 30S subunit, it contacts several helices of the 16S rRNA. In the 70S ribosome it contacts the 23S rRNA (bridge B1a) and protein L5 of the 50S subunit (bridge B1b), connecting the 2 subunits; these bridges are implicated in subunit movement. Contacts the tRNAs in the A and P-sites. Belongs to the universal ribosomal protein uS13 family. (118 aa) |
| | rpsK | 30S ribosomal subunit protein S11; Located on the platform of the 30S subunit, it bridges several disparate RNA helices of the 16S rRNA. Forms part of the Shine- Dalgarno cleft in the 70S ribosome; Belongs to the universal ribosomal protein uS11 family. (129 aa) |
| | rpsD | 30S ribosomal subunit protein S4; One of the primary rRNA binding proteins, it binds directly to 16S rRNA where it nucleates assembly of the body of the 30S subunit. (206 aa) |
| | rpoA | RNA polymerase, alpha subunit; DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. (329 aa) |
| | rplQ | 50S ribosomal subunit protein L17; Code: J; COG: COG0203. (127 aa) |
| | yhdM | Putative transcriptional regulator; Code: K; COG: COG0789. (141 aa) |
| | sun | Conserved hypothetical protein; Specifically methylates the cytosine at position 967 (m5C967) of 16S rRNA. (429 aa) |
| | fmt | 10-formyltetrahydrofolate:L-methionyl-tRNA(fMet) N-formyltransferase; Attaches a formyl group to the free amino group of methionyl- tRNA(fMet). The formyl group appears to play a dual role in the initiator identity of N-formylmethionyl-tRNA by promoting its recognition by IF2 and preventing the misappropriation of this tRNA by the elongation apparatus; Belongs to the Fmt family. (315 aa) |
| | def | Peptide deformylase; Removes the formyl group from the N-terminal Met of newly synthesized proteins. Requires at least a dipeptide for an efficient rate of reaction. N-terminal L-methionine is a prerequisite for activity but the enzyme has broad specificity at other positions. (169 aa) |
| | yrdC | Conserved hypothetical protein; Required for the formation of a threonylcarbamoyl group on adenosine at position 37 (t(6)A37) in tRNAs that read codons beginning with adenine. Catalyzes the conversion of L-threonine, HCO(3)(-)/CO(2) and ATP to give threonylcarbamoyl-AMP (TC-AMP) as the acyladenylate intermediate, with the release of diphosphate. (190 aa) |
| | yhdG | Putative dehydrogenase; Catalyzes the synthesis of 5,6-dihydrouridine (D), a modified base found in the D-loop of most tRNAs, via the reduction of the C5-C6 double bond in target uridines; Belongs to the Dus family. DusB subfamily. (321 aa) |
| | cafA | Bundles of cytoplasmic filaments; Code: J; COG: COG1530. (495 aa) |
| | rplM | 50S ribosomal subunit protein L13; This protein is one of the early assembly proteins of the 50S ribosomal subunit, although it is not seen to bind rRNA by itself. It is important during the early stages of 50S assembly. (142 aa) |
| | rpsI | 30S ribosomal subunit protein S9; Code: J; COG: COG0103; Belongs to the universal ribosomal protein uS9 family. (130 aa) |
| | rpoN | RNA polymerase, sigma(54 or 60) factor; Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. (477 aa) |
| | rplU | 50S ribosomal subunit protein L21; This protein binds to 23S rRNA in the presence of protein L20; Belongs to the bacterial ribosomal protein bL21 family. (103 aa) |
| | rpmA | 50S ribosomal subunit protein L27; Code: J; COG: COG0211; Belongs to the bacterial ribosomal protein bL27 family. (85 aa) |
| | greA | Transcription elongation factor; Necessary for efficient RNA polymerase transcription elongation past template-encoded arresting sites. The arresting sites in DNA have the property of trapping a certain fraction of elongating RNA polymerases that pass through, resulting in locked ternary complexes. Cleavage of the nascent transcript by cleavage factors such as GreA or GreB allows the resumption of elongation from the new 3'terminus. GreA releases sequences of 2 to 3 nucleotides. (153 aa) |
| | ftsJ | Cell division protein; Specifically methylates the uridine in position 2552 of 23S rRNA at the 2'-O position of the ribose in the fully assembled 50S ribosomal subunit. (209 aa) |
| | nusA | Transcription pausing; Participates in both transcription termination and antitermination. (495 aa) |
| | infB | Protein chain initiation factor IF-2; One of the essential components for the initiation of protein synthesis. Protects formylmethionyl-tRNA from spontaneous hydrolysis and promotes its binding to the 30S ribosomal subunits. Also involved in the hydrolysis of GTP during the formation of the 70S ribosomal complex; Belongs to the TRAFAC class translation factor GTPase superfamily. Classic translation factor GTPase family. IF-2 subfamily. (890 aa) |
| | rbfA | Ribosome-binding factor A; One of several proteins that assist in the late maturation steps of the functional core of the 30S ribosomal subunit. Associates with free 30S ribosomal subunits (but not with 30S subunits that are part of 70S ribosomes or polysomes). Required for efficient processing of 16S rRNA. May interact with the 5'-terminal helix region of 16S rRNA. (133 aa) |
| | truB | tRNA pseudouridine 5S synthase; Responsible for synthesis of pseudouridine from uracil-55 in the psi GC loop of transfer RNAs; Belongs to the pseudouridine synthase TruB family. Type 1 subfamily. (314 aa) |
| | rpsO | 30S ribosomal subunit protein S15; One of the primary rRNA binding proteins, it binds directly to 16S rRNA where it helps nucleate assembly of the platform of the 30S subunit by binding and bridging several RNA helices of the 16S rRNA. (89 aa) |
| | pnp | Polynucleotide phosphorylase; Involved in mRNA degradation. Catalyzes the phosphorolysis of single-stranded polyribonucleotides processively in the 3'- to 5'- direction. (734 aa) |
| | yraL | Conserved hypothetical protein; Catalyzes the 2'-O-methylation of the ribose of cytidine 1402 (C1402) in 16S rRNA. (286 aa) |
| | ygjO | Putative enzyme; Specifically methylates the guanine in position 1835 (m2G1835) of 23S rRNA. (388 aa) |
| | rpoD | RNA polymerase, sigma(70) factor; Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. This sigma factor is the primary sigma factor during exponential growth. (613 aa) |
| | rpsU | 30S ribosomal subunit protein S21; Code: J; COG: COG0828; Belongs to the bacterial ribosomal protein bS21 family. (71 aa) |
| | ygjD | Putative O-sialoglycoprotein endopeptidase; Required for the formation of a threonylcarbamoyl group on adenosine at position 37 (t(6)A37) in tRNAs that read codons beginning with adenine. Is involved in the transfer of the threonylcarbamoyl moiety of threonylcarbamoyl-AMP (TC-AMP) to the N6 group of A37, together with TsaE and TsaB. TsaD likely plays a direct catalytic role in this reaction; Belongs to the KAE1 / TsaD family. (337 aa) |
| | cca | tRNA nucleotidyl transferase; Catalyzes the addition and repair of the essential 3'- terminal CCA sequence in tRNAs without using a nucleic acid template. Adds these three nucleotides in the order of C, C, and A to the tRNA nucleotide-73, using CTP and ATP as substrates and producing inorganic pyrophosphate. Also shows phosphatase, 2'-nucleotidase and 2',3'-cyclic phosphodiesterase activities. These phosphohydrolase activities are probably involved in the repair of the tRNA 3'-CCA terminus degraded by intracellular RNases. (412 aa) |
| | lysS | Lysine tRNA synthetase, constitutive; Suppressor of ColE1 mutation in primer RNA; Code: J; COG: COG1190; Belongs to the class-II aminoacyl-tRNA synthetase family. (505 aa) |
| | prfB | Peptide chain release factor RF-2; Peptide chain release factor 2 directs the termination of translation in response to the peptide chain termination codons UGA and UAA. (293 aa) |
| | ygfZ | Conserved hypothetical protein; Folate-binding protein involved in regulating the level of ATP-DnaA and in the modification of some tRNAs. It is probably a key factor in regulatory networks that act via tRNA modification, such as initiation of chromosomal replication; Belongs to the tRNA-modifying YgfZ family. (326 aa) |
| | yggJ | Conserved hypothetical protein; Specifically methylates the N3 position of the uracil ring of uridine 1498 (m3U1498) in 16S rRNA. Acts on the fully assembled 30S ribosomal subunit. (252 aa) |
| | yqgF | Conserved hypothetical protein; Could be a nuclease involved in processing of the 5'-end of pre-16S rRNA; Belongs to the YqgF nuclease family. (138 aa) |
| | yggH | Conserved hypothetical protein; Catalyzes the formation of N(7)-methylguanine at position 46 (m7G46) in tRNA; Belongs to the class I-like SAM-binding methyltransferase superfamily. TrmB family. (239 aa) |
| | hybF | HybF; Involved in the maturation of [NiFe] hydrogenases. Required for nickel insertion into the metal center of the hydrogenase. (113 aa) |
| | hybD | Probable processing element for hydrogenase-2; Code: C; COG: COG0680. (164 aa) |
| | ygdE | Conserved hypothetical protein; Catalyzes the 2'-O-methylation at nucleotide C2498 in 23S rRNA; Belongs to the class I-like SAM-binding methyltransferase superfamily. RNA methyltransferase RlmE family. RlmM subfamily. (366 aa) |
| | yqcB | Conserved hypothetical protein; Code: J; COG: COG0564; orf. (260 aa) |
| | ygcA | Putative enzyme; Catalyzes the formation of 5-methyl-uridine at position 1939 (m5U1939) in 23S rRNA; Belongs to the class I-like SAM-binding methyltransferase superfamily. RNA M5U methyltransferase family. RlmD subfamily. (433 aa) |
| | ygbO | Putative hydrogenase subunit; Responsible for synthesis of pseudouridine from uracil-13 in transfer RNAs; Belongs to the pseudouridine synthase TruD family. (349 aa) |
| | rpoS | RNA polymerase, sigma S factor; Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. This sigma factor is the master transcriptional regulator of the stationary phase and the general stress response. (330 aa) |
| | hypB | Guanine-nucleotide binding protein; Functions as nickel donor for large subunit of hydrogenase 3; Code: OK; COG: COG0378. (290 aa) |
| | hypA | Pleiotrophic effects on 3 hydrogenase isozymes; Involved in the maturation of [NiFe] hydrogenases. Required for nickel insertion into the metal center of the hydrogenase. (116 aa) |
| | alaS | alanyl-tRNA synthetase; Catalyzes the attachment of alanine to tRNA(Ala) in a two- step reaction: alanine is first activated by ATP to form Ala-AMP and then transferred to the acceptor end of tRNA(Ala). Also edits incorrectly charged Ser-tRNA(Ala) and Gly-tRNA(Ala) via its editing domain; Belongs to the class-II aminoacyl-tRNA synthetase family. (876 aa) |
| | sfhB | Suppressor of ftsH mutation; Responsible for synthesis of pseudouridine from uracil. Belongs to the pseudouridine synthase RluA family. (326 aa) |
| | yfiP | Conserved hypothetical protein; Code: S; COG: COG3148; orf. (240 aa) |
| | yfiF | Conserved hypothetical protein; Code: J; COG: COG0566; orf; Belongs to the class IV-like SAM-binding methyltransferase superfamily. RNA methyltransferase TrmH family. (345 aa) |
| | yfiC | Putative enzyme; Specifically methylates the adenine in position 37 of tRNA(1)(Val) (anticodon cmo5UAC). (285 aa) |
| | rpoE | RNA polymerase; sigma-E factor; heat shock and oxidative stress; Code: K; COG: COG1595; Belongs to the sigma-70 factor family. ECF subfamily. (191 aa) |
| | lepA | GTP-binding elongation factor; Required for accurate and efficient protein synthesis under certain stress conditions. May act as a fidelity factor of the translation reaction, by catalyzing a one-codon backward translocation of tRNAs on improperly translocated ribosomes. Back-translocation proceeds from a post-translocation (POST) complex to a pre- translocation (PRE) complex, thus giving elongation factor G a second chance to translocate the tRNAs correctly. Binds to ribosomes in a GTP- dependent manner. (599 aa) |
| | lepB | Signal peptidase I; Code: U; COG: COG0681; Belongs to the peptidase S26 family. (324 aa) |
| | rnc | RNase III, ds RNA; Digests double-stranded RNA. Involved in the processing of primary rRNA transcript to yield the immediate precursors to the large and small rRNAs (23S and 16S). Processes some mRNAs, and tRNAs when they are encoded in the rRNA operon. Processes pre-crRNA and tracrRNA of type II CRISPR loci if present in the organism. (226 aa) |
| | smpB | Small protein B; Required for rescue of stalled ribosomes mediated by trans- translation. Binds to transfer-messenger RNA (tmRNA), required for stable association of tmRNA with ribosomes. tmRNA and SmpB together mimic tRNA shape, replacing the anticodon stem-loop with SmpB. tmRNA is encoded by the ssrA gene; the 2 termini fold to resemble tRNA(Ala) and it encodes a 'tag peptide', a short internal open reading frame. During trans-translation Ala-aminoacylated tmRNA acts like a tRNA, entering the A-site of stalled ribosomes, displacing the stalled mRNA. The ribosome then switches to tran [...] (160 aa) |
| | rpsP | 30S ribosomal subunit protein S16; Code: J; COG: COG0228; Belongs to the bacterial ribosomal protein bS16 family. (82 aa) |
| | yfjA | Conserved hypothetical protein; An accessory protein needed during the final step in the assembly of 30S ribosomal subunit, possibly for assembly of the head region. Probably interacts with S19. Essential for efficient processing of 16S rRNA. May be needed both before and after RbfA during the maturation of 16S rRNA. It has affinity for free ribosomal 30S subunits but not for 70S ribosomes; Belongs to the RimM family. (185 aa) |
| | trmD | tRNA methyltransferase; Specifically methylates guanosine-37 in various tRNAs. Belongs to the RNA methyltransferase TrmD family. (255 aa) |
| | rplS | 50S ribosomal subunit protein L19; This protein is located at the 30S-50S ribosomal subunit interface and may play a role in the structure and function of the aminoacyl-tRNA binding site. (115 aa) |
| | yfhC | Putative deaminase; Catalyzes the deamination of adenosine to inosine at the wobble position 34 of tRNA(Arg2); Belongs to the cytidine and deoxycytidylate deaminase family. (178 aa) |
| | trmJ | Putative ATP synthase beta subunit; Catalyzes the formation of 2'O-methylated cytidine (Cm32) or 2'O-methylated uridine (Um32) at position 32 in tRNA. (245 aa) |
| | yfgB | Conserved hypothetical protein; Specifically methylates position 2 of adenine 2503 in 23S rRNA and position 2 of adenine 37 in tRNAs. m2A2503 modification seems to play a crucial role in the proofreading step occurring at the peptidyl transferase center and thus would serve to optimize ribosomal fidelity; Belongs to the radical SAM superfamily. RlmN family. (384 aa) |
| | hisS | Histidine tRNA synthetase; Code: J; COG: COG0124. (424 aa) |
| | ypfI | Conserved hypothetical protein; Catalyzes the formation of N(4)-acetylcytidine (ac(4)C) at the wobble position of tRNA(Met), by using acetyl-CoA as an acetyl donor and ATP (or GTP). (671 aa) |
| | gltX | Glutamate tRNA synthetase, catalytic subunit; Catalyzes the attachment of glutamate to tRNA(Glu) in a two- step reaction: glutamate is first activated by ATP to form Glu-AMP and then transferred to the acceptor end of tRNA(Glu). (471 aa) |
| | mnmC | Putative peptidase; Catalyzes the last two steps in the biosynthesis of 5- methylaminomethyl-2-thiouridine (mnm(5)s(2)U) at the wobble position (U34) in tRNA. Catalyzes the FAD-dependent demodification of cmnm(5)s(2)U34 to nm(5)s(2)U34, followed by the transfer of a methyl group from S-adenosyl-L-methionine to nm(5)s(2)U34, to form mnm(5)s(2)U34; In the N-terminal section; belongs to the methyltransferase superfamily. tRNA (mnm(5)s(2)U34)-methyltransferase family. (688 aa) |
| | truA | Pseudouridylate synthase I; Formation of pseudouridine at positions 38, 39 and 40 in the anticodon stem and loop of transfer RNAs. (270 aa) |
| | elaC | Conserved hypothetical protein; Zinc phosphodiesterase, which has both exoribonuclease and endoribonuclease activities. (311 aa) |
| | infA | Protein chain initiation factor IF-1; One of the essential components for the initiation of protein synthesis. Stabilizes the binding of IF-2 and IF-3 on the 30S subunit to which N-formylmethionyl-tRNA(fMet) subsequently binds. Helps modulate mRNA selection, yielding the 30S pre-initiation complex (PIC). Upon addition of the 50S ribosomal subunit IF-1, IF-2 and IF-3 are released leaving the mature 70S translation initiation complex. (72 aa) |
| | serS | Serine tRNA synthetase; Catalyzes the attachment of serine to tRNA(Ser). Is also able to aminoacylate tRNA(Sec) with serine, to form the misacylated tRNA L- seryl-tRNA(Sec), which will be further converted into selenocysteinyl- tRNA(Sec). (430 aa) |
| | rpsA | 30S ribosomal subunit protein S1; Binds mRNA; thus facilitating recognition of the initiation point. It is needed to translate mRNA with a short Shine-Dalgarno (SD) purine-rich sequence. (557 aa) |
| | smtA | S-adenosylmethionine-dependent methyltransferase; Catalyzes the methylation of 5-carboxymethoxyuridine (cmo5U) to form 5-methoxycarbonylmethoxyuridine (mcmo5U) at position 34 in tRNAs; Belongs to the class I-like SAM-binding methyltransferase superfamily. CmoM family. (261 aa) |
| | asnS | Asparagine tRNA synthetase; Code: J; COG: COG0017. (466 aa) |
| | yceA | Conserved hypothetical protein; Code: R; COG: COG1054; orf; Belongs to the UPF0176 family. (350 aa) |
| | metG | Methionine tRNA synthetase; Is required not only for elongation of protein synthesis but also for the initiation of all mRNA translation through initiator tRNA(fMet) aminoacylation. (677 aa) |
| | yohI | Putative regulator protein; Code: J; COG: COG0042. (191 aa) |
| | rne | RNase E; Endoribonuclease that plays a central role in RNA processing and decay. Required for the maturation of 5S and 16S rRNAs and the majority of tRNAs. Also involved in the degradation of most mRNAs. Belongs to the RNase E/G family. RNase E subfamily. (1061 aa) |
| | yceC | Conserved hypothetical protein; Responsible for synthesis of pseudouridine from uracil. Belongs to the pseudouridine synthase RluA family. (319 aa) |
| | rpmF | 50S ribosomal subunit protein L32; Code: J; COG: COG0333; Belongs to the bacterial ribosomal protein bL32 family. (57 aa) |
| | ycfB | Conserved hypothetical protein; Catalyzes the 2-thiolation of uridine at the wobble position (U34) of tRNA(Lys), tRNA(Glu) and tRNA(Gln), leading to the formation of s(2)U34, the first step of tRNA-mnm(5)s(2)U34 synthesis. Sulfur is provided by IscS, via a sulfur-relay system. Binds ATP and its substrate tRNAs; Belongs to the MnmA/TRMU family. (383 aa) |
| | ymfC | Conserved hypothetical protein; Code: J; COG: COG1187; orf; Belongs to the pseudouridine synthase RsuA family. (207 aa) |
| | yebU | Putative nucleolar proteins; Specifically methylates the cytosine at position 1407 (m5C1407) of 16S rRNA. (481 aa) |
| | rnt | RNase T; Trims short 3' overhangs of a variety of RNA species, leaving a one or two nucleotide 3' overhang. Responsible for the end-turnover of tRNA: specifically removes the terminal AMP residue from uncharged tRNA (tRNA-C-C-A). Also appears to be involved in tRNA biosynthesis. (215 aa) |
| | tyrS | Tyrosine tRNA synthetase; Catalyzes the attachment of tyrosine to tRNA(Tyr) in a two- step reaction: tyrosine is first activated by ATP to form Tyr-AMP and then transferred to the acceptor end of tRNA(Tyr); Belongs to the class-I aminoacyl-tRNA synthetase family. TyrS type 1 subfamily. (424 aa) |
| | thrS | Threonine tRNA synthetase; Catalyzes the attachment of threonine to tRNA(Thr) in a two- step reaction: L-threonine is first activated by ATP to form Thr-AMP and then transferred to the acceptor end of tRNA(Thr). Also edits incorrectly charged L-seryl-tRNA(Thr). (642 aa) |
| | infC | Protein chain initiation factor IF-3; IF-3 binds to the 30S ribosomal subunit and shifts the equilibrum between 70S ribosomes and their 50S and 30S subunits in favor of the free subunits, thus enhancing the availability of 30S subunits on which protein synthesis initiation begins. (144 aa) |
| | rpmI | 50S ribosomal subunit protein A; Code: J; COG: COG0291; Belongs to the bacterial ribosomal protein bL35 family. (65 aa) |
| | rplT | 50S ribosomal subunit protein L20; Binds directly to 23S ribosomal RNA and is necessary for the in vitro assembly process of the 50S ribosomal subunit. It is not involved in the protein synthesizing functions of that subunit. (118 aa) |
| | pheS | Phenylalanine tRNA synthetase, alpha-subunit; Code: J; COG: COG0016; Belongs to the class-II aminoacyl-tRNA synthetase family. Phe-tRNA synthetase alpha subunit type 1 subfamily. (327 aa) |
| | pheT | Phenylalanine tRNA synthetase, beta-subunit; Code: J; COG: COG0072; Belongs to the phenylalanyl-tRNA synthetase beta subunit family. Type 1 subfamily. (795 aa) |
| | yeaZ | Conserved hypothetical protein; Code: O; COG: COG1214; orf. (231 aa) |
| | rnd | RNase D; Exonuclease involved in the 3' processing of various precursor tRNAs. Initiates hydrolysis at the 3'-terminus of an RNA molecule and releases 5'-mononucleotides; Belongs to the RNase D family. (375 aa) |
| | sppA | Protease IV; Signal peptide peptidase; Code: OU; COG: COG0616. (618 aa) |
| | ydaO | Conserved hypothetical protein; Catalyzes the ATP-dependent 2-thiolation of cytidine in position 32 of tRNA, to form 2-thiocytidine (s(2)C32). The sulfur atoms are provided by the cysteine/cysteine desulfurase (IscS) system. (311 aa) |
| | yciH | Conserved hypothetical protein; Code: J; COG: COG0023; orf. (109 aa) |
| | yciL | Conserved hypothetical protein; Code: J; COG: COG1187; orf; Belongs to the pseudouridine synthase RsuA family. (290 aa) |
| | prfA | Peptide chain release factor RF-1; Peptide chain release factor 1 directs the termination of translation in response to the peptide chain termination codons UAG and UAA. (360 aa) |
| | pth | peptidyl-tRNA hydrolase; The natural substrate for this enzyme may be peptidyl-tRNAs which drop off the ribosome during protein synthesis. Belongs to the PTH family. (194 aa) |
| | argS | Arginine tRNA synthetase; Code: J; COG: COG0018. (577 aa) |
| | yecP | Putative enzyme; Catalyzes carboxymethyl transfer from carboxy-S-adenosyl-L- methionine (Cx-SAM) to 5-hydroxyuridine (ho5U) to form 5- carboxymethoxyuridine (cmo5U) at position 34 in tRNAs. (323 aa) |
| | yecO | Conserved hypothetical protein; Catalyzes the conversion of S-adenosyl-L-methionine (SAM) to carboxy-S-adenosyl-L-methionine (Cx-SAM). (247 aa) |
| | aspS | Aspartate tRNA synthetase; Catalyzes the attachment of L-aspartate to tRNA(Asp) in a two-step reaction: L-aspartate is first activated by ATP to form Asp- AMP and then transferred to the acceptor end of tRNA(Asp). Belongs to the class-II aminoacyl-tRNA synthetase family. Type 1 subfamily. (590 aa) |
| | fliA | Alternative sigma factor 28; Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. This sigma factor controls the expression of flagella-related genes; Belongs to the sigma-70 factor family. FliA subfamily. (239 aa) |
| | hyaD | Processor of HyaA and HyaB proteins; Code: C; COG: COG0680. (195 aa) |
| | yccK | Putative sulfite reductase; Part of a sulfur-relay system required for 2-thiolation of 5- methylaminomethyl-2-thiouridine (mnm(5)s(2)U) at tRNA wobble positions. Could accept sulfur from TusD (By similarity). (128 aa) |
| | yccW | Conserved hypothetical protein; Specifically methylates the cytosine at position 1962 (m5C1962) of 23S rRNA. (398 aa) |
| | ycbY | Putative oxidoreductase; Specifically methylates the guanine in position 2445 (m2G2445) and the guanine in position 2069 (m7G2069) of 23S rRNA. Belongs to the methyltransferase superfamily. RlmKL family. (702 aa) |
| | yeiP | Putative elongation factor; Code: J; COG: COG0231; Belongs to the elongation factor P family. (275 aa) |
| | rsuA | 16S pseudouridylate 516 synthase; Code: J; COG: COG1187; Belongs to the pseudouridine synthase RsuA family. (231 aa) |
| | yejH | Putative ATP-dependent helicase; Code: KL; COG: COG1061. (586 aa) |
| | rplY | 50S ribosomal subunit protein L25; This is one of the proteins that binds to the 5S RNA in the ribosome where it forms part of the central protuberance. Belongs to the bacterial ribosomal protein bL25 family. (94 aa) |
| | ybiN | Conserved hypothetical protein; Specifically methylates the adenine in position 1618 of 23S rRNA. (335 aa) |
| | rimK | Ribosomal protein S6 modification protein; Is an L-glutamate ligase that catalyzes the ATP-dependent post-translational addition of glutamate residues to the C-terminus of ribosomal protein S6 (RpsF). Is also able to catalyze the synthesis of poly-alpha-glutamate in vitro, via ATP hydrolysis from unprotected glutamate as substrate. The number of glutamate residues added to either RpsF or to poly-alpha-glutamate changes with pH. Belongs to the RimK family. (300 aa) |
| | ybjF | Putative enzyme; Catalyzes the formation of 5-methyl-uridine at position 747 (m5U747) in 23S rRNA; Belongs to the class I-like SAM-binding methyltransferase superfamily. RNA M5U methyltransferase family. RlmC subfamily. (375 aa) |
| | glnS | Glutamine tRNA synthetase; Code: J; COG: COG0008. (554 aa) |
| | yleA | Conserved hypothetical protein; Catalyzes the methylthiolation of N6-(dimethylallyl)adenosine (i(6)A), leading to the formation of 2-methylthio-N6- (dimethylallyl)adenosine (ms(2)i(6)A) at position 37 in tRNAs that read codons beginning with uridine. (474 aa) |
| | ybeY | Conserved hypothetical protein; Single strand-specific metallo-endoribonuclease involved in late-stage 70S ribosome quality control and in maturation of the 3' terminus of the 16S rRNA. (155 aa) |
| | leuS | Leucine tRNA synthetase; Code: J; COG: COG0495; Belongs to the class-I aminoacyl-tRNA synthetase family. (860 aa) |
| | ybeA | Conserved hypothetical protein; Specifically methylates the pseudouridine at position 1915 (m3Psi1915) in 23S rRNA; Belongs to the RNA methyltransferase RlmH family. (155 aa) |
| | lipB | Protein of lipoate biosynthesis; Catalyzes the transfer of endogenously produced octanoic acid from octanoyl-acyl-carrier-protein onto the lipoyl domains of lipoate- dependent enzymes. Lipoyl-ACP can also act as a substrate although octanoyl-ACP is likely to be the physiological substrate. (191 aa) |
| | lipA | Lipoate synthesis; Catalyzes the radical-mediated insertion of two sulfur atoms into the C-6 and C-8 positions of the octanoyl moiety bound to the lipoyl domains of lipoate-dependent enzymes, thereby converting the octanoylated domains into lipoylated derivatives. (321 aa) |
| | SDY_0482 | Conserved hypothetical protein; Code: S; COG: COG1690; orf. (88 aa) |
| | prfH | Probable peptide chain release factor; Code: J; COG: COG1186. (166 aa) |
| | ybaK | Conserved hypothetical protein; Code: S; COG: COG2606; orf; Belongs to the prolyl-tRNA editing family. YbaK/EbsC subfamily. (159 aa) |
| | ybbB | Putative capsule anchoring protein; Involved in the post-transcriptional modification of the uridine at the wobble position (U34) of tRNA(Lys), tRNA(Glu) and tRNA(Gln). Catalyzes the conversion of 2-thiouridine (S2U-RNA) to 2- selenouridine (Se2U-RNA). Acts in a two-step process involving geranylation of 2-thiouridine (S2U) to S-geranyl-2-thiouridine (geS2U) and subsequent selenation of the latter derivative to 2-selenouridine (Se2U) in the tRNA chain. (364 aa) |
| | tgt | tRNA-guanine transglycosylase; Catalyzes the base-exchange of a guanine (G) residue with the queuine precursor 7-aminomethyl-7-deazaguanine (PreQ1) at position 34 (anticodon wobble position) in tRNAs with GU(N) anticodons (tRNA-Asp, -Asn, -His and -Tyr). Catalysis occurs through a double-displacement mechanism. The nucleophile active site attacks the C1' of nucleotide 34 to detach the guanine base from the RNA, forming a covalent enzyme-RNA intermediate. The proton acceptor active site deprotonates the incoming PreQ1, allowing a nucleophilic attack on the C1' of the ribose to form the [...] (375 aa) |
| | nusB | NusB; Involved in transcription antitermination. Required for transcription of ribosomal RNA (rRNA) genes. Binds specifically to the boxA antiterminator sequence of the ribosomal RNA (rrn) operons. (139 aa) |
| | yajK | Putative oxidoreductase; Catalyzes the ATP-dependent transfer of a sulfur to tRNA to produce 4-thiouridine in position 8 of tRNAs, which functions as a near-UV photosensor. Also catalyzes the transfer of sulfur to the sulfur carrier protein ThiS, forming ThiS-thiocarboxylate. This is a step in the synthesis of thiazole, in the thiamine biosynthesis pathway. The sulfur is donated as persulfide by IscS. (482 aa) |
| | cysS | Cysteine tRNA synthetase; Code: J; COG: COG0215; Belongs to the class-I aminoacyl-tRNA synthetase family. (461 aa) |
| | proS | Proline tRNA synthetase; Catalyzes the attachment of proline to tRNA(Pro) in a two- step reaction: proline is first activated by ATP to form Pro-AMP and then transferred to the acceptor end of tRNA(Pro). As ProRS can inadvertently accommodate and process non-cognate amino acids such as alanine and cysteine, to avoid such errors it has two additional distinct editing activities against alanine. One activity is designated as 'pretransfer' editing and involves the tRNA(Pro)-independent hydrolysis of activated Ala-AMP. The other activity is designated 'posttransfer' editing and involves de [...] (572 aa) |
| | yaeJ | Conserved hypothetical protein; Code: J; COG: COG1186; orf. (140 aa) |
| | mesJ | Cell cycle protein; Ligates lysine onto the cytidine present at position 34 of the AUA codon-specific tRNA(Ile) that contains the anticodon CAU, in an ATP-dependent manner. Cytidine is converted to lysidine, thus changing the amino acid specificity of the tRNA from methionine to isoleucine. Belongs to the tRNA(Ile)-lysidine synthase family. (431 aa) |
| | frr | Ribosome releasing factor; Responsible for the release of ribosomes from messenger RNA at the termination of protein biosynthesis. May increase the efficiency of translation by recycling ribosomes from one round of translation to another; Belongs to the RRF family. (185 aa) |
| | tsf | Protein chain elongation factor EF-Ts; Associates with the EF-Tu.GDP complex and induces the exchange of GDP to GTP. It remains bound to the aminoacyl-tRNA.EF- Tu.GTP complex up to the GTP hydrolysis stage on the ribosome. Belongs to the EF-Ts family. (283 aa) |
| | rpsB | 30S ribosomal subunit protein S2; Code: J; COG: COG0052; Belongs to the universal ribosomal protein uS2 family. (241 aa) |
| | yadB | Putative tRNA synthetase; Catalyzes the tRNA-independent activation of glutamate in presence of ATP and the subsequent transfer of glutamate onto a tRNA(Asp). Glutamate is transferred on the 2-amino-5-(4,5-dihydroxy-2- cyclopenten-1-yl) moiety of the queuosine in the wobble position of the QUC anticodon; Belongs to the class-I aminoacyl-tRNA synthetase family. GluQ subfamily. (308 aa) |
| | pcnB | poly(A) polymerase I; Adds poly(A) tail to the 3' end of many RNAs, which usually targets these RNAs for decay. Plays a significant role in the global control of gene expression, through influencing the rate of transcript degradation, and in the general RNA quality control. Belongs to the tRNA nucleotidyltransferase/poly(A) polymerase family. (454 aa) |
| | yabC | Putative apolipoprotein; Specifically methylates the N4 position of cytidine in position 1402 (C1402) of 16S rRNA. (313 aa) |
| | yabO | Conserved hypothetical protein; Responsible for synthesis of pseudouridine from uracil. Belongs to the pseudouridine synthase RluA family. (219 aa) |
| | ksgA | S-adenosylmethionine-6-N',N'-adenosyl dimethyltransferase; Specifically dimethylates two adjacent adenosines (A1518 and A1519) in the loop of a conserved hairpin near the 3'-end of 16S rRNA in the 30S particle. May play a critical role in biogenesis of 30S subunits. (273 aa) |
| | caiF | Transcriptional regulator of cai operon. (153 aa) |
| | ileS | Isoleucine tRNA synthetase; Catalyzes the attachment of isoleucine to tRNA(Ile). As IleRS can inadvertently accommodate and process structurally similar amino acids such as valine, to avoid such errors it has two additional distinct tRNA(Ile)-dependent editing activities. One activity is designated as 'pretransfer' editing and involves the hydrolysis of activated Val-AMP. The other activity is designated 'posttransfer' editing and involves deacylation of mischarged Val-tRNA(Ile). Belongs to the class-I aminoacyl-tRNA synthetase family. IleS type 1 subfamily. (938 aa) |
| | rpsT | 30S ribosomal subunit protein S20; Binds directly to 16S ribosomal RNA. (87 aa) |
| | lasT | Conserved hypothetical protein; Catalyzes the formation of 2'O-methylated cytidine (Cm32) or 2'O-methylated uridine (Um32) at position 32 in tRNA. (228 aa) |
