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| | 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. (239 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. (884 aa) |
| | trmJ | tRNA/rRNA methyltransferase; Catalyzes the formation of 2'O-methylated cytidine (Cm32) or 2'O-methylated uridine (Um32) at position 32 in tRNA. (276 aa) |
| | rpsD | SSU ribosomal protein S4P; One of the primary rRNA binding proteins, it binds directly to 16S rRNA where it nucleates assembly of the body of the 30S subunit. (205 aa) |
| | ttcA | tRNA 2-thiocytidine biosynthesis protein TtcA; 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. (290 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. (418 aa) |
| | SCB56563.1 | Ribosomal large subunit pseudouridine synthase C; Responsible for synthesis of pseudouridine from uracil. Belongs to the pseudouridine synthase RluA family. (317 aa) |
| | thrS | Ser-tRNA(Thr) hydrolase /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). (668 aa) |
| | SCB56225.1 | Hypothetical protein. (161 aa) |
| | hfq | RNA-binding protein Hfq; RNA chaperone that binds small regulatory RNA (sRNAs) and mRNAs to facilitate mRNA translational regulation in response to envelope stress, environmental stress and changes in metabolite concentrations. Also binds with high specificity to tRNAs. Belongs to the Hfq family. (80 aa) |
| | SCB56792.1 | tRNA-U20-dihydrouridine synthase; 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. (339 aa) |
| | dusA | tRNA-U16,U17-dihydrouridine synthase; 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. (321 aa) |
| | SCB56945.1 | Response regulator receiver and ANTAR domain protein. (195 aa) |
| | SCB56255.1 | Response regulator receiver domain-containing protein. (125 aa) |
| | SCB57160.1 | poly(A) polymerase; Belongs to the tRNA nucleotidyltransferase/poly(A) polymerase family. (417 aa) |
| | trmL | tRNA (cytidine/uridine-2'-O-)-methyltransferase; 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. (153 aa) |
| | rplY | LSU ribosomal protein L25P; 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. CTC subfamily. (204 aa) |
| | SCB57195.1 | tRNA-binding protein. (113 aa) |
| | SCB57211.1 | Ca-activated chloride channel family protein. (790 aa) |
| | SCB57264.1 | B3/B4 domain-containing protein (DNA/RNA-binding domain of Phe-tRNA-synthetase). (232 aa) |
| | SCB57333.1 | Ribonuclease T2; Belongs to the RNase T2 family. (246 aa) |
| | SCB57334.1 | ATP-binding cassette protein, ChvD family. (549 aa) |
| | rnpA | Ribonuclease 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. (133 aa) |
| | truA | tRNA pseudouridine38-40 synthase; Formation of pseudouridine at positions 38, 39 and 40 in the anticodon stem and loop of transfer RNAs. (265 aa) |
| | SCB57728.1 | RNA methyltransferase, TrmH family; Belongs to the class IV-like SAM-binding methyltransferase superfamily. RNA methyltransferase TrmH family. (286 aa) |
| | rpsT | SSU ribosomal protein S20P; Binds directly to 16S ribosomal RNA. (92 aa) |
| | SCB57827.1 | 16S rRNA (cytosine967-C5)-methyltransferase; Belongs to the class I-like SAM-binding methyltransferase superfamily. RsmB/NOP family. (429 aa) |
| | pheT | phenylalanyl-tRNA synthetase beta subunit; Belongs to the phenylalanyl-tRNA synthetase beta subunit family. Type 1 subfamily. (807 aa) |
| | pheS | phenylalanyl-tRNA synthetase, alpha subunit; Belongs to the class-II aminoacyl-tRNA synthetase family. Phe-tRNA synthetase alpha subunit type 1 subfamily. (360 aa) |
| | rplT | LSU ribosomal protein L20P; 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. (134 aa) |
| | nusA | NusA antitermination factor; Participates in both transcription termination and antitermination. (533 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. (310 aa) |
| | rpsO | Small subunit 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. (712 aa) |
| | SCB58031.1 | SSU ribosomal protein S1P; Binds mRNA; thus facilitating recognition of the initiation point. It is needed to translate mRNA with a short Shine-Dalgarno (SD) purine-rich sequence. (567 aa) |
| | infA | Bacterial translation initiation factor 1 (bIF-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. (85 aa) |
| | SCB59010.1 | Response regulator receiver domain-containing protein. (146 aa) |
| | rpmE | LSU ribosomal protein L31P; Binds the 23S rRNA; Belongs to the bacterial ribosomal protein bL31 family. Type A subfamily. (73 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); Belongs to the class-I aminoacyl-tRNA synthetase family. Glutamate--tRNA ligase type 1 subfamily. (488 aa) |
| | SCB59319.1 | 23S rRNA pseudouridine2605 synthase; Belongs to the pseudouridine synthase RsuA family. (267 aa) |
| | mnmA | tRNA (5-methylaminomethyl-2-thiouridylate)-methyltransferase; Catalyzes the 2-thiolation of uridine at the wobble position (U34) of tRNA, leading to the formation of s(2)U34. (421 aa) |
| | rnhB | RNase HII; Endonuclease that specifically degrades the RNA of RNA-DNA hybrids. (229 aa) |
| | SCB59789.1 | Translation factor SUA5; Required for the formation of a threonylcarbamoyl group on adenosine at position 37 (t(6)A37) in tRNAs that read codons beginning with adenine. (324 aa) |
| | SCB59798.1 | 23S rRNA (cytidine1920-2'-O)/16S rRNA (cytidine1409-2'-O)-methyltransferase. (266 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). (997 aa) |
| | SCB59722.1 | 23S rRNA pseudouridine2605 synthase; Belongs to the pseudouridine synthase RsuA family. (634 aa) |
| | nusB | NusB antitermination factor; 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. (160 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. (955 aa) |
| | rlmJ | 23S rRNA (adenine2030-N6)-methyltransferase; Specifically methylates the adenine in position 2030 of 23S rRNA. (289 aa) |
| | rsmA | 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. (275 aa) |
| | SCB60151.1 | TIGR00255 family protein. (295 aa) |
| | rpsF | Small subunit ribosomal protein S6; Binds together with S18 to 16S ribosomal RNA. (152 aa) |
| | rpsR | SSU ribosomal protein S18P; 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. (82 aa) |
| | rplI | LSU ribosomal protein L9P; Binds to the 23S rRNA. (192 aa) |
| | rnr | RNAse R; 3'-5' exoribonuclease that releases 5'-nucleoside monophosphates and is involved in maturation of structured RNAs. (790 aa) |
| | SCB59959.1 | 23S rRNA (guanosine2251-2'-O)-methyltransferase; Belongs to the class IV-like SAM-binding methyltransferase superfamily. RNA methyltransferase TrmH family. (296 aa) |
| | SCB59997.1 | Ribonuclease J. (556 aa) |
| | SCB60301.1 | GTP-binding protein. (606 aa) |
| | SCB60240.1 | SS-A/Ro ribonucleoprotein. (517 aa) |
| | ffh | Signal recognition particle subunit FFH/SRP54 (srp54); Involved in targeting and insertion of nascent membrane proteins into the cytoplasmic membrane. Binds to the hydrophobic signal sequence of the ribosome-nascent chain (RNC) as it emerges from the ribosomes. The SRP-RNC complex is then targeted to the cytoplasmic membrane where it interacts with the SRP receptor FtsY. Interaction with FtsY leads to the transfer of the RNC complex to the Sec translocase for insertion into the membrane, the hydrolysis of GTP by both Ffh and FtsY, and the dissociation of the SRP-FtsY complex into the i [...] (525 aa) |
| | rlmN | 23S rRNA m(2)A-2503 methyltransferase; 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. (409 aa) |
| | SCB60606.1 | Hypothetical protein. (135 aa) |
| | SCB60526.1 | Ribosomal large subunit pseudouridine synthase D; Responsible for synthesis of pseudouridine from uracil. Belongs to the pseudouridine synthase RluA family. (341 aa) |
| | SCB60528.1 | tRNA G18 (ribose-2'-O)-methylase SpoU. (274 aa) |
| | flbT | Flagellar protein FlbT; Has a post-transcriptional repressor function in flagellum biogenesis. Associates with the 5'-UTR of fljK mRNA and promotes its degradation. (149 aa) |
| | rplU | LSU ribosomal protein L21P; This protein binds to 23S rRNA in the presence of protein L20; Belongs to the bacterial ribosomal protein bL21 family. (105 aa) |
| | proB | Glutamate 5-kinase; Catalyzes the transfer of a phosphate group to glutamate to form L-glutamate 5-phosphate. (392 aa) |
| | SCB61326.1 | Heat shock protein Hsp15. (134 aa) |
| | SCB61408.1 | 16S rRNA (cytosine967-C5)-methyltransferase; Belongs to the class I-like SAM-binding methyltransferase superfamily. RsmB/NOP family. (460 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. (421 aa) |
| | rpsK | SSU ribosomal protein S11P; 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) |
| | rpsM | SSU ribosomal protein S13P; 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. (122 aa) |
| | rplO | LSU ribosomal protein L15P; Binds to the 23S rRNA; Belongs to the universal ribosomal protein uL15 family. (158 aa) |
| | rpsE | SSU ribosomal protein S5P; 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. (189 aa) |
| | rplR | LSU ribosomal protein L18P; 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. (120 aa) |
| | rplF | LSU ribosomal protein L6P; 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) |
| | rpsH | SSU ribosomal protein S8P; 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. (132 aa) |
| | rpsN | SSU ribosomal protein S14P; 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) |
| | rplE | LSU ribosomal protein L5P; 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. (185 aa) |
| | rplX | LSU ribosomal protein L24P; One of the proteins that surrounds the polypeptide exit tunnel on the outside of the subunit. (102 aa) |
| | rplN | LSU ribosomal protein L14P; Binds to 23S rRNA. Forms part of two intersubunit bridges in the 70S ribosome; Belongs to the universal ribosomal protein uL14 family. (122 aa) |
| | rpsQ | SSU ribosomal protein S17P; One of the primary rRNA binding proteins, it binds specifically to the 5'-end of 16S ribosomal RNA. (79 aa) |
| | rplP | LSU ribosomal protein L16P; 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. (137 aa) |
| | rpsC | SSU ribosomal protein S3P; 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. (244 aa) |
| | rplV | LSU ribosomal protein L22P; 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. (129 aa) |
| | rpsS | SSU ribosomal protein S19P; Protein S19 forms a complex with S13 that binds strongly to the 16S ribosomal RNA. (92 aa) |
| | rplB | LSU ribosomal protein L2P; 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. (278 aa) |
| | rplW | LSU ribosomal protein L23P; 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. (97 aa) |
| | rplD | LSU ribosomal protein L4P; Forms part of the polypeptide exit tunnel. (206 aa) |
| | rplC | LSU ribosomal protein L3P; 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. (213 aa) |
| | rpsJ | SSU ribosomal protein S10P; Involved in the binding of tRNA to the ribosomes. Belongs to the universal ribosomal protein uS10 family. (102 aa) |
| | SCB62105.1 | HicA toxin of toxin-antitoxin. (84 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 [...] (173 aa) |
| | rnc | RNAse 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. (239 aa) |
| | era | GTP-binding protein Era; An essential GTPase that binds both GDP and GTP, with rapid nucleotide exchange. Plays a role in 16S rRNA processing and 30S ribosomal subunit biogenesis and possibly also in cell cycle regulation and energy metabolism. (313 aa) |
| | rpsL | SSU ribosomal protein S12P; 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. (123 aa) |
| | rpsG | SSU ribosomal protein S7P; 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) |
| | rplK | LSU ribosomal protein L11P; Forms part of the ribosomal stalk which helps the ribosome interact with GTP-bound translation factors. (143 aa) |
| | rplA | LSU ribosomal protein L1P; Binds directly to 23S rRNA. The L1 stalk is quite mobile in the ribosome, and is involved in E site tRNA release. (233 aa) |
| | rplJ | LSU ribosomal protein L10P; 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. (172 aa) |
