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| | mraW | S-adenosyl-methyltransferase MraW; Specifically methylates the N4 position of cytidine in position 1402 (C1402) of 16S rRNA. (327 aa) |
| | yqgF | RNAse H-fold protein YqgF; Could be a nuclease involved in processing of the 5'-end of pre-16S rRNA; Belongs to the YqgF HJR family. (142 aa) |
| | rpoD | Putative RNA polymerase sigma factor RpoD; 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. (611 aa) |
| | rpsU | 30S ribosomal protein S21; Predicted based on similarity to TIGRFAM S21p and related proteins in nr; Belongs to the bacterial ribosomal protein bS21 family. (80 aa) |
| | tsaD | Putative glycoprotease, GCP family; 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. (340 aa) |
| | efp | Translational 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) |
| | pheT | phenylalanyl-tRNA synthetase subunit beta; Predicted based on similarity to TIGRFAM pheT_bact and related proteins in nr; Belongs to the phenylalanyl-tRNA synthetase beta subunit family. Type 1 subfamily. (797 aa) |
| | pheS | phenylalanyl-tRNA synthetase subunit alpha; Predicted based on similarity to TIGRFAM pheS and related proteins in nr; Belongs to the class-II aminoacyl-tRNA synthetase family. Phe-tRNA synthetase alpha subunit type 1 subfamily. (327 aa) |
| | rplT | 50S ribosomal 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. (119 aa) |
| | rpmI | 50S ribosomal protein L35; Predicted based on similarity to TIGRFAM rpmI_bact and related proteins in nr; Belongs to the bacterial ribosomal protein bL35 family. (65 aa) |
| | infC | Translation 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. (179 aa) |
| | thrS | threonyl-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). (643 aa) |
| | nfuA | Putative IscR-regulated protein YhgI; 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) |
| | rpoH | RNA polymerase factor sigma-32; 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. (285 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. (198 aa) |
| | prfA | Peptide chain release factor 1; Peptide chain release factor 1 directs the termination of translation in response to the peptide chain termination codons UAG and UAA. (360 aa) |
| | rluA-2 | Putative pseudouridine synthase, RluA family; Responsible for synthesis of pseudouridine from uracil. Belongs to the pseudouridine synthase RluA family. (326 aa) |
| | AEI74909.1 | Putative folate-binding protein YgfZ; 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. (331 aa) |
| | ybeY | Putative metalloprotein YbeY family; Single strand-specific metallo-endoribonuclease involved in late-stage 70S ribosome quality control and in maturation of the 3' terminus of the 16S rRNA. (154 aa) |
| | proS | prolyl-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 dea [...] (574 aa) |
| | argS | arginyl-tRNA synthetase; Predicted based on similarity to TIGRFAM argS and related proteins in nr. (576 aa) |
| | tadA | Putative cytidine and deoxycytidylate deaminase zinc-binding region protein; Catalyzes the deamination of adenosine to inosine at the wobble position 34 of tRNA(Arg2); Belongs to the cytidine and deoxycytidylate deaminase family. (176 aa) |
| | rplU | 50S ribosomal protein L21; This protein binds to 23S rRNA in the presence of protein L20; Belongs to the bacterial ribosomal protein bL21 family. (151 aa) |
| | rpmA | 50S ribosomal protein L27; Predicted based on similarity to TIGRFAM L27 and related proteins in nr; Belongs to the bacterial ribosomal protein bL27 family. (85 aa) |
| | rrmJ | Putative 23S rRNA methyltransferase J; 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 | Putative transcription elongation factor NusA; Participates in both transcription termination and antitermination. (496 aa) |
| | infB | Translation 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. (901 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. (138 aa) |
| | truB | tRNA pseudouridine synthase B; 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 protein S15; Forms an intersubunit bridge (bridge B4) with the 23S rRNA of the 50S subunit in the ribosome. (89 aa) |
| | pnp | Polyribonucleotide nucleotidyltransferase; Involved in mRNA degradation. Catalyzes the phosphorolysis of single-stranded polyribonucleotides processively in the 3'- to 5'- direction. (703 aa) |
| | rplM | 50S ribosomal 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 protein S9; Predicted based on similarity to TIGRFAM arch_S9P and related proteins in nr; Belongs to the universal ribosomal protein uS9 family. (130 aa) |
| | rplS | 50S ribosomal 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. (124 aa) |
| | trmD | tRNA (guanine-N1)-methyltransferase; Specifically methylates guanosine-37 in various tRNAs. Belongs to the RNA methyltransferase TrmD family. (254 aa) |
| | rimM | 16S rRNA-processing protein RimM; 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. (182 aa) |
| | rpsP | 30S ribosomal protein S16; Predicted based on similarity to TIGRFAM S16 and related proteins in nr; Belongs to the bacterial ribosomal protein bS16 family. (84 aa) |
| | trmI | tRNA (guanine-N(7)-)-methyltransferase; 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. (242 aa) |
| | AEI74958.1 | RNA methyltransferase, RsmD family; Specifically methylates the guanine in position 966 of 16S rRNA in the assembled 30S particle; Belongs to the methyltransferase superfamily. RsmD family. (207 aa) |
| | rpsB | 30S ribosomal protein S2; Predicted based on similarity to TIGRFAM rpsB_bact and related proteins in nr; Belongs to the universal ribosomal protein uS2 family. (237 aa) |
| | tsf | Translational elongation factor 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. (268 aa) |
| | frr | Ribosome recycling 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. (184 aa) |
| | AEI74966.1 | Putative Outer membrane protein (OmpH-like); Predicted based on similarity to PFAM OmpH and related proteins in nr; Belongs to the skp family. (166 aa) |
| | gltX | glutamyl-tRNA synthetase; 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). (474 aa) |
| | fmt | methionyl-tRNA 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. (318 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. (164 aa) |
| | metG | methionyl-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. (542 aa) |
| | pcnB | Putative 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. (470 aa) |
| | prfB | Peptide chain release factor 2; Peptide chain release factor 2 directs the termination of translation in response to the peptide chain termination codons UGA and UAA. (347 aa) |
| | lysS | lysyl-tRNA synthetase; Predicted based on similarity to TIGRFAM lysS_bact and related proteins in nr; Belongs to the class-II aminoacyl-tRNA synthetase family. (526 aa) |
| | AEI74989.1 | Putative sulfur relay protein, TusE/DsrC/DsvC family; Part of a sulfur-relay system. (108 aa) |
| | trmU | tRNA (5-methylaminomethyl-2-thiouridylate)-methyltransferase; 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. (370 aa) |
| | hisT | tRNA pseudouridine synthase A; Formation of pseudouridine at positions 38, 39 and 40 in the anticodon stem and loop of transfer RNAs. (264 aa) |
| | tgt | Queuine tRNA-ribosyltransferase; 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 t [...] (377 aa) |
| | rpsJ | 30S ribosomal protein S10; Involved in the binding of tRNA to the ribosomes. Belongs to the universal ribosomal protein uS10 family. (103 aa) |
| | rplC | 50S ribosomal 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 | Putative 50S ribosomal protein L4; Forms part of the polypeptide exit tunnel. (201 aa) |
| | rplW | Putative 50S ribosomal 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. (112 aa) |
| | rplB | 50S ribosomal 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 protein S19; Protein S19 forms a complex with S13 that binds strongly to the 16S ribosomal RNA. (95 aa) |
| | rplV | Putative 50S ribosomal protein L22; The globular domain of the protein is located near the polypeptide exit tunnel on the outside of the subunit, while an extended beta-hairpin is found that lines the wall of the exit tunnel in the center of the 70S ribosome. (110 aa) |
| | rpsC | 30S ribosomal 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. (232 aa) |
| | rplP | 50S ribosomal 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 | Putative ribosomal protein L29; Predicted based on similarity to TIGRFAM L29 and related proteins in nr; Belongs to the universal ribosomal protein uL29 family. (63 aa) |
| | rpsQ | Putative 30S ribosomal protein S17; One of the primary rRNA binding proteins, it binds specifically to the 5'-end of 16S ribosomal RNA. (85 aa) |
| | rplN | Putative 50S ribosomal 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 protein L24; One of the proteins that surrounds the polypeptide exit tunnel on the outside of the subunit. (105 aa) |
| | rplE | Putative ribosomal 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. (178 aa) |
| | rpsN | Putative ribosomal 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 | Putative 30S ribosomal protein S8; 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 | Putative 50S ribosomal 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 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. (116 aa) |
| | rpsE | 30S ribosomal protein S5; Located at the back of the 30S subunit body where it stabilizes the conformation of the head with respect to the body. Belongs to the universal ribosomal protein uS5 family. (166 aa) |
| | rpmD | 50S ribosomal protein L30; Predicted based on similarity to TIGRFAM rpmD_bact and related proteins in nr. (59 aa) |
| | rplO | 50S ribosomal protein L15; Binds to the 23S rRNA; Belongs to the universal ribosomal protein uL15 family. (145 aa) |
| | rpmJ | 50S ribosomal protein L36; Predicted based on similarity to TIGRFAM rpmJ_bact and related proteins in nr; Belongs to the bacterial ribosomal protein bL36 family. (38 aa) |
| | rpsM | 30S ribosomal 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. (121 aa) |
| | rpsK | 30S ribosomal 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 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 | DNA-directed 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 protein L17; Predicted based on similarity to TIGRFAM L17 and related proteins in nr. (127 aa) |
| | smpB | SsrA-binding protein; 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 [...] (159 aa) |
| | glnS | glutaminyl-tRNA synthetase; Predicted based on similarity to TIGRFAM glnS and related proteins in nr. (553 aa) |
| | tyrS | tyrosyl-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. (422 aa) |
| | rpoC | DNA-directed RNA polymerase subunit beta; DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. (1402 aa) |
| | rpoB | DNA-directed RNA polymerase subunit beta; DNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. (1342 aa) |
| | rplL | 50S ribosomal 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. (122 aa) |
| | rplJ | Putative 50S ribosomal 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) |
| | rplA | 50S ribosomal 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) |
| | rplK | 50S ribosomal protein L11; Forms part of the ribosomal stalk which helps the ribosome interact with GTP-bound translation factors. (142 aa) |
| | nusG | Transcription antitermination protein nusG; 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) |
| | tufA | Translation elongation factor Tu; This protein promotes the GTP-dependent binding of aminoacyl- tRNA to the A-site of ribosomes during protein biosynthesis. (394 aa) |
| | valS | valyl-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. (954 aa) |
| | infA | Translation 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) |
| | fusA | Translation elongation factor 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 family. EF-G/EF-2 s [...] (702 aa) |
| | rpsG | 30S ribosomal 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) |
| | rpsL | 30S ribosomal protein S12; Interacts with and stabilizes bases of the 16S rRNA that are involved in tRNA selection in the A site and with the mRNA backbone. Located at the interface of the 30S and 50S subunits, it traverses the body of the 30S subunit contacting proteins on the other side and probably holding the rRNA structure together. The combined cluster of proteins S8, S12 and S17 appears to hold together the shoulder and platform of the 30S subunit. (124 aa) |
| | tusB | Putative sulfur relay protein TusB/DsrH; 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) |
| | tusC | Sulfur relay protein TusC/DsrF; Predicted based on similarity to TIGRFAM sulf_tusC_dsrF and related proteins in nr; Belongs to the DsrF/TusC family. (119 aa) |
| | tusD | Sulfur relay protein TusD/DsrE; Predicted based on similarity to TIGRFAM sulf_tusD_dsrE and related proteins in nr. (123 aa) |
| | tilS | Putative tRNA(Ile)-lysidine synthetase; 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. (494 aa) |
| | lepA | GTP-binding protein LepA; 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; Predicted based on similarity to TIGRFAM sigpep_I_bact and related proteins in nr; Belongs to the peptidase S26 family. (320 aa) |
| | rnc | Ribonuclease III; 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. (229 aa) |
| | mnmE | tRNA modification GTPase TrmE; 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. (458 aa) |
| | rnpA | Ribonuclease P; 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. (112 aa) |
| | rpmH | 50S ribosomal protein L34; Predicted based on similarity to TIGRFAM rpmH_bact and related proteins in nr; Belongs to the bacterial ribosomal protein bL34 family. (49 aa) |
| | rpmE | Putative 50S ribosomal protein L31; Binds the 23S rRNA. (71 aa) |
| | AEI74688.1 | Conserved hypothetical protein MEPCIT_021; Predicted based on similarity to related proteins in nr; Belongs to the UPF0176 family. (337 aa) |
| | cysS | cysteinyl-tRNA synthetase; Predicted based on similarity to TIGRFAM cysS and related proteins in nr; Belongs to the class-I aminoacyl-tRNA synthetase family. (466 aa) |
| | cca | 2',3'-cyclic phosphodiesterase; 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. (423 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. (217 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) |
| | trpS | tryptophanyl-tRNA synthetase; Catalyzes the attachment of tryptophan to tRNA(Trp). Belongs to the class-I aminoacyl-tRNA synthetase family. (334 aa) |
| | ksgA | Dimethyladenosine transferase; 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. (270 aa) |
| | rpmB | 50S ribosomal protein L28; Predicted based on similarity to TIGRFAM L28 and related proteins in nr; Belongs to the bacterial ribosomal protein bL28 family. (78 aa) |
| | rpmG | 50S ribosomal protein L33; Predicted based on similarity to TIGRFAM rpmG_bact and related proteins in nr; Belongs to the bacterial ribosomal protein bL33 family. (55 aa) |
| | serS | seryl-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) |
| | ileS | isoleucyl-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 protein S20; Binds directly to 16S ribosomal RNA. (93 aa) |
| | AEI74749.1 | Putative ATPase; Predicted based on similarity to TIGRFAM HI0065_YjeE and related proteins in nr. (159 aa) |
| | miaA | tRNA delta(2)-isopentenylpyrophosphate 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. (314 aa) |
| | rlmB | Putative RNA methyltransferase, trmH family; 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. (245 aa) |
| | mnmG | Glucose inhibited division protein A; 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) |
| | rpsF | Putative 30S ribosomal protein S6; Binds together with S18 to 16S ribosomal RNA. (136 aa) |
| | rpsR | 30S ribosomal 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) |
| | rplI | 50S ribosomal protein L9; Binds to the 23S rRNA. (150 aa) |
| | AEI74767.1 | Putative 23S rRNA pseudouridylate synthase B; Predicted based on similarity to TIGRFAM TIGR00093 and related proteins in nr; Belongs to the pseudouridine synthase RsuA family. (276 aa) |
| | aspS | aspartyl-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. (586 aa) |
| | leuS | leucyl-tRNA synthetase; Predicted based on similarity to TIGRFAM leuS_bact and related proteins in nr; Belongs to the class-I aminoacyl-tRNA synthetase family. (865 aa) |
| | lipB | Lipoate-protein ligase B; 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. (221 aa) |
| | lipA | Lipoyl synthase; 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. (315 aa) |
| | nusB | Transcription antitermination protein 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. (140 aa) |
| | rpmF | 50S ribosomal protein L32; Predicted based on similarity to TIGRFAM rpmF_bact and related proteins in nr; Belongs to the bacterial ribosomal protein bL32 family. (56 aa) |
| | rluA | Putative pseudouridine synthase, RluA family; Responsible for synthesis of pseudouridine from uracil. Belongs to the pseudouridine synthase RluA family. (322 aa) |
| | rne | Putative 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. (851 aa) |
| | yeaZ | M22 O-sialoglycoprotein endopeptidase-like protein; Predicted based on similarity to TIGRFAM bact_YeaZ and related proteins in nr. (249 aa) |
| | rplY | 50S ribosomal 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. (95 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. (875 aa) |
| | asnS | asparaginyl-tRNA synthetase; Predicted based on similarity to TIGRFAM asnS and related proteins in nr. (468 aa) |
| | rpsA | 30S ribosomal 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. (556 aa) |
| | hisS | Putative histidyl-tRNA synthetase; Predicted based on similarity to TIGRFAM hisS and related proteins in nr. (426 aa) |
| | rpoZ | DNA-directed RNA polymerase, omega subunit; 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) |
| | tusA | Conserved hypothetical protein MEPCIT_197; 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 moly [...] (85 aa) |
| | dusA | Putative tRNA-dihydrouridine synthase A; 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. (344 aa) |
| | glyQ | Putative glycyl-tRNA synthetase subunit alpha; Predicted based on similarity to TIGRFAM glyQ and related proteins in nr. (301 aa) |
| | glyS | Putative glycyl-tRNA synthetase subunit beta; Predicted based on similarity to TIGRFAM glyS and related proteins in nr. (689 aa) |
| | AEI74860.1 | Conserved hypothetical protein; Predicted based on similarity to TIGRFAM TIGR00255 and related proteins in nr. (267 aa) |
