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| | ypfI | Putative acetyltransferase; 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). (672 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) |
| | truA | Pseudouridylate synthase I; Formation of pseudouridine at positions 38, 39 and 40 in the anticodon stem and loop of transfer RNAs. (270 aa) |
| | yejK | Nucleotide associated protein; Present in spermidine nucleoids; similar to E. coli orf, hypothetical protein (AAC75247.1); Blastp hit to AAC75247.1 (335 aa), 96% identity in aa 1 - 334. (335 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) |
| | rsuA | 16S rRNA pseudouridylate 516 synthase; Responsible for synthesis of pseudouridine from uracil-516 in 16S ribosomal RNA. (231 aa) |
| | yohI | Putative nitrogen regulation 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 U16 in tRNAs. Belongs to the Dus family. DusC subfamily. (312 aa) |
| | rpsE | 30S ribosomal subunit protein S5; With S4 and S12 plays an important role in translational accuracy. Many suppressors of streptomycin-dependent mutants of protein S12 are found in this protein, some but not all of which decrease translational accuracy (ram, ribosomal ambiguity mutations). (167 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) |
| | cspB | Putative cold-shock protein; Similar to E. coli cold shock-like protein (AAC74625.1); Blastp hit to AAC74625.1 (70 aa), 84% identity in aa 1 - 70. (70 aa) |
| | yebU | Putative rRNA methyltransferase; Specifically methylates the cytosine at position 1407 (m5C1407) of 16S rRNA. (479 aa) |
| | proQ | Activator of proP; RNA chaperone with significant RNA binding, RNA strand exchange and RNA duplexing activities. May regulate ProP activity through an RNA-based, post-transcriptional mechanism. Belongs to the ProQ family. (228 aa) |
| | cspC | Cold shock protein; Multicopy suppresses mukB mutants, putative regulator; cold shock-like protein CSPC. (SW:CSPC_SALTY). (69 aa) |
| | yciO | Putative translation factor; Similar to E. coli orf, hypothetical protein (AAC74349.1); Blastp hit to AAC74349.1 (218 aa), 93% identity in aa 13 - 218; Belongs to the SUA5 family. (206 aa) |
| | yciL | Putative ribosomal large subunit pseudouridine synthase; Responsible for synthesis of pseudouridine from uracil-2605 in 23S ribosomal RNA; Belongs to the pseudouridine synthase RsuA family. (291 aa) |
| | acnA | Aconitate hydratase 1; Involved in the catabolism of short chain fatty acids (SCFA) via the tricarboxylic acid (TCA)(acetyl degradation route) and the 2- methylcitrate cycle I (propionate degradation route). Catalyzes the reversible isomerization of citrate to isocitrate via cis-aconitate. Also catalyzes the hydration of 2-methyl-cis-aconitate to yield (2R,3S)-2-methylisocitrate. The (2S,3S)-2-methylcitrate (2-MC) is a very poor substrate. The apo form of AcnA functions as a RNA-binding regulatory protein (By similarity). Belongs to the aconitase/IPM isomerase family. (891 aa) |
| | rpsT | 30S ribosomal subunit protein S20; Binds directly to 16S ribosomal RNA. (87 aa) |
| | yciH | Putative translation initiation factor SUI1; Protein YCIH. (SW:YCIH_SALTY); Belongs to the SUI1 family. (108 aa) |
| | rnb | RNase II; Involved in mRNA degradation. Hydrolyzes single-stranded polyribonucleotides processively in the 3' to 5' direction. (644 aa) |
| | STM1665 | Putative cytoplasmic protein. (228 aa) |
| | dbpA | ATP-dependent RNA helicase; DEAD-box RNA helicase involved in the assembly of the 50S ribosomal subunit. Has an RNA-dependent ATPase activity, which is specific for 23S rRNA, and a 3' to 5' RNA helicase activity that uses the energy of ATP hydrolysis to destabilize and unwind short rRNA duplexes. (457 aa) |
| | ydaO | Putative ATPase; 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. Belongs to the TtcA family. (311 aa) |
| | hrpA | Similar to E. coli helicase, ATP-dependent (AAC74495.1); Blastp hit to AAC74495.1 (1281 aa), 95% identity in aa 1 - 1280. (1300 aa) |
| | STM1632 | Putative inner membrane protein. (114 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) |
| | pheT | Phenylalanine tRNA synthetase, beta-subunit; phenylalanyl-tRNA synthetase beta chain. (SW:SYFB_SALTY); Belongs to the phenylalanyl-tRNA synthetase beta subunit family. Type 1 subfamily. (795 aa) |
| | pheS | Similar to E. coli phenylalanine tRNA synthetase, alpha-subunit (AAC74784.1); Blastp hit to AAC74784.1 (327 aa), 97% identity in aa 1 - 327. (327 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 (By similarity). (118 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) |
| | STM3521 | Putative ribonucleoprotein related-protein. (517 aa) |
| | yhiR | Putative cytoplasmic protein; Specifically methylates the adenine in position 2030 of 23S rRNA. (280 aa) |
| | cspA | Major cold shock protein 7.4; Binds to and stimulates the transcription of the CCAAT- containing, cold-shock-inducible promoters of the H-NS and GyrA proteins. Binds also to the inverted repeat 5'-ATTGG-3' (By similarity). (70 aa) |
| | selB | Similar to E. coli selenocysteinyl-tRNA-specific translation factor (AAC76614.1); Blastp hit to AAC76614.1 (614 aa), 85% identity in aa 1 - 614. (616 aa) |
| | yibK | Putative tRNA/rRNA 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. (157 aa) |
| | rpmG | 50S ribosomal protein L33. (SW:RL33_ECOLI); Belongs to the bacterial ribosomal protein bL33 family. (55 aa) |
| | rph | RNase PH; Phosphorolytic exoribonuclease that removes nucleotide residues following the -CCA terminus of tRNA and adds nucleotides to the ends of RNA molecules by using nucleoside diphosphates as substrates. (238 aa) |
| | spoU | Putative tRNA/rRNA methyltransferase; 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) |
| | rnpA | RNase 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. (119 aa) |
| | STM3846 | Putative reverse transcriptase; RNA-dependent DNA polymerase. (289 aa) |
| | rhlB | Putative helicase; DEAD-box RNA helicase involved in RNA degradation. Has RNA- dependent ATPase activity and unwinds double-stranded RNA. Belongs to the DEAD box helicase family. RhlB subfamily. (421 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) |
| | typA | GTP-binding elongation factor family protein; A 50S ribosomal subunit assembly protein with GTPase activity, required for 50S subunit assembly at low temperatures, may also play a role in translation. Binds GTP and analogs. Binds the 70S ribosome between the 30S and 50S subunits, in a similar position as ribosome-bound EF-G; it contacts a number of ribosomal proteins, both rRNAs and the A-site tRNA (By similarity). A ribosome-stimulated GTPase, GTPase activity increases 4 fold in the presence of 70S ribosomes. Bind to 70S ribosomes in the presence of GTP or its non- hydrolyzable analog [...] (607 aa) |
| | yihZ | D-Tyr-tRNA(Tyr) deacylase; An aminoacyl-tRNA editing enzyme that deacylates mischarged D-aminoacyl-tRNAs. Also deacylates mischarged glycyl-tRNA(Ala), protecting cells against glycine mischarging by AlaRS. Acts via tRNA- based rather than protein-based catalysis; rejects L-amino acids rather than detecting D-amino acids in the active site. By recycling D- aminoacyl-tRNA to D-amino acids and free tRNA molecules, this enzyme counteracts the toxicity associated with the formation of D-aminoacyl- tRNA entities in vivo and helps enforce protein L-homochirality. Belongs to the DTD family. (145 aa) |
| | STM4031 | Putative cytoplasmic protein; Similar to E. coli orf, hypothetical protein (AAC76118.1); Blastp hit to AAC76118.1 (104 aa), 40% identity in aa 1 - 99. (103 aa) |
| | rpmE | 50S ribosomal subunit protein L31; Binds the 23S rRNA. (70 aa) |
| | trmA | tRNA (uracil-5-)-methyltransferase; Catalyzes the formation of 5-methyl-uridine at position 54 (m5U54) in all tRNAs. (366 aa) |
| | rplK | 50 S 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; Protein L10 is also a translational repressor protein. It controls the translation of the rplJL-rpoBC operon by binding to its mRNA; 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. (121 aa) |
| | nfi | Endonuclease V; DNA repair enzyme involved in the repair of deaminated bases. Selectively cleaves double-stranded DNA at the second phosphodiester bond 3' to a deoxyinosine leaving behind the intact lesion on the nicked DNA. (223 aa) |
| | yjbC | Putative pseudouridine synthase; Dual specificity enzyme that catalyzes the synthesis of pseudouridine from uracil-2604 in 23S ribosomal RNA and from uracil-35 in the anticodon of tRNA(Tyr); Belongs to the pseudouridine synthase RsuA family. (289 aa) |
| | yjbN | Putative TIM-barrel enzyme; 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. (332 aa) |
| | yjeA | Putative pyruvate oxidase; 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' (Probable). Can also use L-alpha-lysine as a substrate, but probably with lower efficiency. Cannot aminoacylate tRNA(Lys) with lysine. (325 aa) |
| | yjeQ | Putative GTPase; One of several proteins that assist in the late maturation steps of the functional core of the 30S ribosomal subunit. Helps release RbfA from mature subunits. May play a role in the assembly of ribosomal proteins into the subunit. Circularly permuted GTPase that catalyzes slow GTP hydrolysis, GTPase activity is stimulated by the 30S ribosomal subunit; Belongs to the TRAFAC class YlqF/YawG GTPase family. RsgA subfamily. (358 aa) |
| | hfq | Host factor I for bacteriophage Q beta replication; 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 (By similarity). Plays a central regulatory role in the microbial response to space flight conditions. Is essential for virulence and is required for efficient invasion of non-phagocytic cells. (102 aa) |
| | vacB | Putative exoribonuclease; 3'-5' exoribonuclease that releases 5'-nucleoside monophosphates and is involved in maturation of structured RNAs. Belongs to the RNR ribonuclease family. RNase R subfamily. (812 aa) |
| | yjfH | Putative tRNA/rRNA methyltransferase; 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) |
| | rpsF | 30S ribosomal subunit protein S6; Binds together with S18 to 16S ribosomal RNA. (131 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) |
| | rplI | 50S ribosomal subunit protein L9; Binds to the 23S rRNA. (149 aa) |
| | STM4489 | Putative superfamily I DNA helicases; Similar to E. coli putative frameshift suppressor (AAC77264.1); Blastp hit to AAC77264.1 (338 aa), 68% identity in aa 1 - 338. (1171 aa) |
| | yjiW | Putative SOS response protein; Involved in the degradation and recycling of damaged RNA. It is itself a target for degradation by the ATP-dependent protease Lon. Belongs to the SymE family. (110 aa) |
| | yjjK | Putative transport protein; ABC superfamily (atp_bind); similar to E. coli putative ATP-binding component of a transport system (AAC77344.1); Blastp hit to AAC77344.1 (555 aa), 97% identity in aa 1 - 555. (555 aa) |
| | lasT | Putative tRNA/tRNA methyltransferase; Catalyzes the formation of 2'O-methylated cytidine (Cm32) or 2'O-methylated uridine (Um32) at position 32 in tRNA. (228 aa) |
| | cspH | Homology with cold shock proteins; Cold shock-like protein CSPH. (SW:CSPH_SALTY). (70 aa) |
| | ymfC | Putative ribosomal large subunit pseudouridine synthase; Responsible for synthesis of pseudouridine from uracil-2457 in 23S ribosomal RNA; Belongs to the pseudouridine synthase RsuA family. (221 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. (383 aa) |
| | rluC | 23S rRNA pseudouridylate synthase; Responsible for synthesis of pseudouridine from uracil at positions 955, 2504 and 2580 in 23S ribosomal RNA; Belongs to the pseudouridine synthase RluA family. (319 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. (1067 aa) |
| | yccW | Putative SAM-dependent methyltransferase; Specifically methylates the cytosine at position 1962 (m5C1962) of 23S rRNA. (403 aa) |
| | ycbY | Putative N6-adenine-specific DNA methylase; 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) |
| | 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) |
| | 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) |
| | cspE | RNA chaperone, negative regulator of cspA transcription; Similar to E. coli cold shock protein (AAC73724.1); Blastp hit to AAC73724.1 (69 aa), 98% identity in aa 1 - 69. (69 aa) |
| | rna | Similar to E. coli RNase I, cleaves phosphodiester bond between any two nucleotides (AAC73712.1); Blastp hit to AAC73712.1 (268 aa), 73% identity in aa 1 - 268; Belongs to the RNase T2 family. (268 aa) |
| | ybcJ | Putative cytoplasmic protein; Similar to E. coli orf, hypothetical protein (AAC73630.1); Blastp hit to AAC73630.1 (77 aa), 92% identity in aa 8 - 77. (70 aa) |
| | thiI | Sulfur transfer protein (from cys to ThiS and from IscS to U8-tRNA); 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) |
| | nusB | Transcription termination; 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) |
| | proB | Gamma-glutamate kinase; Catalyzes the transfer of a phosphate group to glutamate to form L-glutamate 5-phosphate. (367 aa) |
| | STM0296 | Putative cytoplasmic protein. (82 aa) |
| | rnhB | RNAse HII; Endonuclease that specifically degrades the RNA of RNA-DNA hybrids; Belongs to the RNase HII family. (198 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. (472 aa) |
| | acnB | Aconitate hydratase 2; Involved in the catabolism of short chain fatty acids (SCFA) via the tricarboxylic acid (TCA)(acetyl degradation route) and the 2- methylcitrate cycle I (propionate degradation route). Catalyzes the reversible isomerization of citrate to isocitrate via cis-aconitate. Also catalyzes the hydration of 2-methyl-cis-aconitate to yield (2R,3S)-2-methylisocitrate. The apo form of AcnB functions as a RNA- binding regulatory protein which regulates FliC synthesis via interaction with the ftsH transcript to decrease the intracellular levels of FtsH. The lower levels of Fts [...] (865 aa) |
| | rluA | 23S rRNA pseudouridylate 746 synthase; Dual specificity enzyme that catalyzes the synthesis of pseudouridine from uracil-746 in 23S ribosomal RNA and from uracil-32 in the anticodon stem and loop of transfer RNAs. (219 aa) |
| | ksgA | S-adenosylmethionine-6-N',N'-adenosyl (rRNA) 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) |
| | 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. (944 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) |
| | 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) |
| | 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) |
| | 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) |
| | 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) |
| | 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) |
| | 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) |
| | 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) |
| | 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) |
| | 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 (By similarity). Belongs to the universal ribosomal protein uS3 family. (233 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) |
| | rpsS | 30S ribosomal subunit protein S19; Protein S19 forms a complex with S13 that binds strongly to the 16S ribosomal RNA. (92 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) |
| | 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) |
| | 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 (By similarity). Forms part of the polypeptide exit tunnel. Belongs to the universal ribosomal protein uL4 family. (201 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) |
| | 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) |
| | 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) |
| | rpsL | 30S ribosomal subunit protein S12; With S4 and S5 plays an important role in translational accuracy. (124 aa) |
| | yrfH | Heat shock protein; Predicted small RNA-binding protein; similar to E. coli orf, hypothetical protein (AAC76425.1); Blastp hit to AAC76425.1 (133 aa), 95% identity in aa 1 - 133; Belongs to the HSP15 family. (133 aa) |
| | yhgF | Putative RNase R; Similar to E. coli orf, hypothetical protein (AAC76432.1); Blastp hit to AAC76432.1 (740 aa), 94% identity in aa 1 - 740. (775 aa) |
| | rplO | 50S ribosomal subunit protein L15; Binds to the 23S rRNA; Belongs to the universal ribosomal protein uL15 family. (144 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) |
| | sun | Putative rRNA methylase; Specifically methylates the cytosine at position 967 (m5C967) of 16S rRNA. (429 aa) |
| | yrdC | Putative translation factor; 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 TIM-barrel enzyme; 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 | RNase G; Similar to E. coli bundles of cytoplasmic filaments (AAC76279.1); Blastp hit to AAC76279.1 (495 aa), 96% identity in aa 7 - 495. (489 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 | Similar to E. coli 30S ribosomal subunit protein S9 (AAC76262.1); Blastp hit to AAC76262.1 (130 aa), 99% identity in aa 1 - 130. (130 aa) |
| | yhbJ | Putative P-loop-containing kinase; Modulates the synthesis of GlmS, by affecting the processing and stability of the regulatory small RNA GlmZ. When glucosamine-6- phosphate (GlcN6P) concentrations are high in the cell, RapZ binds GlmZ and targets it to cleavage by RNase E. Consequently, GlmZ is inactivated and unable to activate GlmS synthesis. Under low GlcN6P concentrations, RapZ is sequestered and inactivated by an other regulatory small RNA, GlmY, preventing GlmZ degradation and leading to synthesis of GlmS; Belongs to the RapZ-like family. RapZ subfamily. (284 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) |
| | yhbY | Putative RNA-binding protein; Contains KH domain; similar to E. coli orf, hypothetical protein (AAC76212.1); Blastp hit to AAC76212.1 (97 aa), 95% identity in aa 1 - 97. (110 aa) |
| | nusA | L factor; Participates in both transcription termination and antitermination. (500 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. Is a global regulator of virulence and persistency. (711 aa) |
| | deaD | Cysteine sulfinate desulfinase; DEAD-box RNA helicase involved in various cellular processes at low temperature, including ribosome biogenesis, mRNA degradation and translation initiation. (646 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. (413 aa) |
| | lysS | Similar to E. coli lysine tRNA synthetase, constitutive; suppressor of ColE1 mutation in primer RNA (AAC75928.1); Blastp hit to AAC75928.1 (505 aa), 95% identity in aa 1 - 505; Belongs to the class-II aminoacyl-tRNA synthetase family. (505 aa) |
| | yqcB | Putative synthase; Responsible for synthesis of pseudouridine from uracil-65 in transfer RNAs; Belongs to the pseudouridine synthase RluA family. (260 aa) |
| | ygcA | Putative RNA methyltransferase; 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. (431 aa) |
| | ygcB | Putative helicase; Similar to E. coli orf, hypothetical protein (AAC75803.1); Blastp hit to AAC75803.1 (888 aa), 30% identity in aa 7 - 849. (887 aa) |
| | STM2940 | Putative cytoplasmic protein; Similar to E. coli orf, hypothetical protein (AAC75799.1); Blastp hit to AAC75799.1 (226 aa), 35% identity in aa 3 - 159. (248 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) |
| | hypF | Hydrogenase maturation protein; Involved in the maturation of [NiFe] hydrogenases. Along with HypE, it catalyzes the synthesis of the CN ligands of the active site iron of [NiFe]-hydrogenases. HypF functions as a carbamoyl transferase using carbamoylphosphate as a substrate and transferring the carboxamido moiety in an ATP-dependent reaction to the thiolate of the C-terminal cysteine of HypE yielding a protein-S-carboxamide. (746 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) |
| | csrA | Carbon storage regulator; A key translational regulator that binds mRNA to regulate translation initiation and/or mRNA stability. Mediates global changes in gene expression, shifting from rapid growth to stress survival by linking envelope stress, the stringent response and the catabolite repression systems. Usually binds in the 5'-UTR; binding at or near the Shine-Dalgarno sequence prevents ribosome-binding, repressing translation, binding elsewhere in the 5'-UTR can activate translation and/or stabilize the mRNA. Its function is antagonized by small RNA(s). (61 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) |
| | ffh | 4.5S-RNP protein; 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 individual components; Belongs to the [...] (453 aa) |
| | rluD | Pseudouridine synthase; Responsible for synthesis of pseudouridine from uracil at positions 1911, 1915 and 1917 in 23S ribosomal RNA. (326 aa) |
| | yfiF | Putative tRNA/rRNA methyltransferase; Similar to E. coli orf, hypothetical protein (AAC75634.1); Blastp hit to AAC75634.1 (345 aa), 87% identity in aa 1 - 345; Belongs to the class IV-like SAM-binding methyltransferase superfamily. RNA methyltransferase TrmH family. (345 aa) |
| | rnc | RNase III, ds RNA; Digests double-stranded RNA. Involved in the processing of ribosomal RNA transcript to yield the immediate precursors to the large and small rRNAs (23S and 16S). Removes small helical intervening sequences (IVSs) from all 7 of the 23S rRNA transcripts. Probably also processes some mRNAs, and tRNAs when they are encoded in the rRNA operon. Probably processes pre-crRNA and tracrRNA of type II CRISPR loci if present in the organism. (226 aa) |
| | era | GTPase; 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. (301 aa) |
| | suhB | Inositol monophosphatase; Similar to E. coli enhances synthesis of sigma32 in mutant; extragenic suppressor, may modulate RNAse III lethal action (AAC75586.1); Blastp hit to AAC75586.1 (267 aa), 97% identity in aa 1 - 267; Belongs to the inositol monophosphatase superfamily. (267 aa) |
| | trmJ | Putative rRNA methylase; Catalyzes the formation of 2'O-methylated cytidine (Cm32) or 2'O-methylated uridine (Um32) at position 32 in tRNA. (243 aa) |
| | yfgB | Putative Fe-S-cluster redox enzyme; 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. (388 aa) |
