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| yicC | UPF0701 protein YicC; Ribonuclease PH (defective);enzyme; Degradation of RNA; RNase PH; Protein involved in RNA catabolic process. (287 aa) | ||||
| yihI | Activator of Der GTPase; A GTPase-activating protein (GAP) that modifies Der/EngA GTPase function, negatively regulating cell growth, probably via ribosome assembly. Stimulates the GTPase activity of Der; a construct missing the first 45 residues is even more stimulatory. Does not stimulate 2 other GTPases (ObgE and Era). Overexpression inhibits cell growth; precursor 16S rRNA accumulates, the 23S rRNA is 6-7 bases longer than usual, and 50S ribosomal subunits are improperly assembled, leading to 45S subunits lacking proteins L9, L18 and L25. Overexpression of Der in the same cells sup [...] (169 aa) | ||||
| typA | GTP-binding protein; A 50S ribosomal subunit assembly protein with GTPase and nucleotide-independent chaperone activity. Genetic and deletion evidence suggests this is involved in ribosome assembly at low temperatures; it may also affect translation (Probable). Involved in incorporation of ribosomal protein L6 into precursor 44S ribosomal particles at low temperatures. Also has chaperone activity which does not require nucleotides. Binds GDP, ppGpp and GDPCP (a nonhydrolyzable GTP analog) with similar affinity; the conformation of the protein does not significantly change upon nucleoti [...] (607 aa) | ||||
| nusG | Transcription termination factor; 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 and phage lambda N-mediated transcription [...] (181 aa) | ||||
| rplK | 50S ribosomal subunit protein L11; Forms part of the ribosomal stalk which helps the ribosome interact with GTP-bound translation factors; Belongs to the universal ribosomal protein uL11 family. (142 aa) | ||||
| rplA | 50S ribosomal subunit protein L1; One of the primary rRNA binding proteins, it binds very close to the 3'-end of the 23S rRNA. Forms part of the L1 stalk. It is often not seen in high-resolution crystal structures, but can be seen in cryo_EM and 3D reconstruction models. These indicate that the distal end of the stalk moves by approximately 20 angstroms. This stalk movement is thought to be coupled to movement of deacylated tRNA into and out of the E site, and thus to participate in tRNA translocation. Contacts the P and E site tRNAs. (234 aa) | ||||
| rluF | 23S rRNA pseudouridine(2604) 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). Can, to a small extent, also react with uracil-2605. Belongs to the pseudouridine synthase RsuA family. (290 aa) | ||||
| crfC | Clamp-binding sister replication fork colocalization protein, dynamin-related; Important for the colocalization of sister nascent DNA strands after replication fork passage during DNA replication, and for positioning and subsequent partitioning of sister chromosomes. Does not have GTPase activity on its own; Belongs to the TRAFAC class dynamin-like GTPase superfamily. Dynamin/Fzo/YdjA family. (742 aa) | ||||
| rsgA | Ribosome small subunit-dependent GTPase A; One of at least 4 proteins (Era, RbfA, RimM and RsgA/YjeQ) that assist in the late maturation steps of the functional core of the 30S ribosomal subunit. Binds the 30S subunit contacting the head, platform, and rRNA helix 44, which may assist the last maturation stages. Removes RbfA from mature, but not immature 30S ribosomes in a GTP- dependent manner; 95% removal in the presence of GTP, 90% removal in GMP-PNP and 65% removal in the presence of GDP. Circulary permuted GTPase that catalyzes rapid hydrolysis of GTP with a slow catalytic turnover [...] (350 aa) | ||||
| rlmB | 23S rRNA mG2251 2'-O-ribose methyltransferase, SAM-dependent; Specifically methylates the ribose of guanosine 2251 in 23S rRNA. (243 aa) | ||||
| rsmC | 16S rRNA m(2)G1207 methyltransferase, SAM-dependent; Specifically methylates the guanine in position 1207 of 16S rRNA in the 30S particle. (343 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. Also plays a role in translational accuracy; neamine-resistant ribosomes show reduced neamine-induced misreading in vitro. (84 aa) | ||||
| rpmC | 50S ribosomal subunit protein L29; Binds 23S rRNA. It is not essential for growth. (63 aa) | ||||
| rplP | 50S ribosomal subunit protein L16; This protein binds directly to 23S ribosomal RNA and is located at the A site of the peptidyltransferase center. It contacts the A and P site tRNAs. It has an essential role in subunit assembly, which is not well understood. (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. (110 aa) | ||||
| rpsS | 30S ribosomal subunit protein S19; In the E.coli 70S ribosome in the initiation state it has been modeled to contact the 23S rRNA of the 50S subunit forming part of bridge B1a; this bridge is broken in the model with bound EF-G. The 23S rRNA contact site in bridge B1a is modeled to differ in different ribosomal states , contacting alternately S13 or S19. In the 3.5 angstroms resolved ribosome structures the contacts between L5, S13 and S19 bridge B1b are different, confirming the dynamic nature of this interaction. Bridge B1a is not visible in the crystallized ribosomes due to 23S rR [...] (92 aa) | ||||
| rplB | 50S ribosomal subunit protein L2; One of the primary rRNA binding proteins. Located near the base of the L1 stalk, it is probably also mobile. 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 highly controversial. 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; is essential for growth. One of the proteins that surround the polypeptide exit tunnel on the outside of the subunit. Acts as the docking site for trigger factor for Ffh binding to the ribosome (SRP54, and and to nascent polypeptide chains. 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. 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 two assembly initiator 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. In addition, in complex with NusB, is involved in the regulation of ribosomal RNA (rRNA) biosynthesis by transcriptional antitermination. S10 binds RNA non-specifically and increases the affinity of NusB for the boxA RNA sequence. S10 may constitute the critical antitermination component of the NusB-S10 complex. 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, where it has been shown to contact mRNA. Has been shown to contact tRNA in both the P and E sites; it probably blocks exit of the E site tRNA. (179 aa) | ||||
| rsmD | 16S rRNA m(2)G966 methyltransferase, SAM-dependent; Specifically methylates the guanine in position 966 of 16S rRNA in the assembled 30S particle. (198 aa) | ||||
| rsmJ | 16S rRNA m(2)G1516 methyltransferase, SAM-dependent; Specifically methylates the guanosine in position 1516 of 16S rRNA; Belongs to the methyltransferase superfamily. RsmJ family. (250 aa) | ||||
| rlmJ | 23S rRNA m(6)A2030 methyltransferase, SAM-dependent; Specifically methylates the adenine in position 2030 of 23S rRNA. Nascent 23S rRNA seems to be the natural substrate. Appears to be not necessary for ribosome assembly. Required for the utilization of extracellular DNA as the sole source of carbon and energy. Belongs to the RlmJ family. (280 aa) | ||||
| rpmG | 50S ribosomal subunit protein L33; Protein involved in structural constituent of ribosome and translation. (55 aa) | ||||
| rpmB | 50S ribosomal subunit protein L28; Protein involved in structural constituent of ribosome and translation. (78 aa) | ||||
| rsmG | 16S rRNA m(7)G527 methyltransferase, SAM-dependent; Specifically methylates the N7 position of guanine in position 527 of 16S rRNA. Requires the intact 30S subunit for methylation; Belongs to the methyltransferase superfamily. RNA methyltransferase RsmG family. (207 aa) | ||||
| rpsT | 30S ribosomal subunit protein S20; Binds directly to 16S ribosomal RNA. (87 aa) | ||||
| rsmA | 16S rRNA m(6)A1518, m(6)A1519 dimethyltransferase, SAM-dependent; 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. Has also a DNA glycosylase/AP lyase activity that removes C mispaired with oxidized T from DNA, and may play a role in protection of DNA against oxidative stress. (273 aa) | ||||
| rluA | Dual-specificity RNA pseudouridine synthase RluA; 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) | ||||
| rsmH | 16S rRNA m(4)C1402 methyltransferase, SAM-dependent; Specifically methylates the N4 position of cytidine in position 1402 (C1402) of 16S rRNA. In vitro, active on the assembled 30S subunit, but not naked 16S rRNA or 70S ribosomes. (313 aa) | ||||
| rpsB | 30S ribosomal subunit protein S2; Required for ribosomal protein S1 to bind to the 30S subunit. (241 aa) | ||||
| nusB | Transcription antitermination protein; 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. The affinity of NusB for the boxA RNA sequence is significantly increased in the presence of the ribosomal protein S10. NusB may serve as a loading factor that ensures efficient entry of S10 into the transcription complexes. It also modulates the rrn boxA-mediated transcription elongation rates. (139 aa) | ||||
| yajL | Oxidative-stress-resistance chaperone; Protein and nucleotide deglycase that catalyzes the deglycation of the Maillard adducts formed between amino groups of proteins or nucleotides and reactive carbonyl groups of glyoxals. Thus, functions as a protein deglycase that repairs methylglyoxal- and glyoxal-glycated proteins, and releases repaired proteins and lactate or glycolate, respectively. Deglycates cysteine, arginine and lysine residues in proteins, and thus reactivates these proteins by reversing glycation by glyoxals. Is able to repair glycated serum albumin, collagen, glyceraldehy [...] (196 aa) | ||||
| rlmH | 23S rRNA m(3)Psi1915 pseudouridine methyltransferase, SAM-dependent; Specifically methylates the pseudouridine at position 1915 (m3Psi1915) in 23S rRNA. Specific for fully assembled 70S ribosomes. Belongs to the RNA methyltransferase RlmH family. (155 aa) | ||||
| rsfS | Ribosomal silencing factor; Functions as a ribosomal silencing factor. Addition to isolated ribosomal subunits partially inhibits their association, preventing translation. Interacts with ribosomal protein L14 (rplN), blocking formation of intersubunit bridge B8, preventing association of the 30S and 50S ribosomal subunits and the formation of functional ribosomes, thus repressing translation. (105 aa) | ||||
| ybeY | ssRNA-specific endoribonuclease; Single strand-specific metallo-endoribonuclease involved in late-stage 70S ribosome quality control and in maturation of the 3' terminus of the 16S rRNA. Acts together with the RNase R to eliminate defective 70S ribosomes, but not properly matured 70S ribosomes or individual subunits, by a process mediated specifically by the 30S ribosomal subunit. Involved in the processing of 16S, 23S and 5S rRNAs, with a particularly strong effect on maturation at both the 5'- and 3'- ends of 16S rRNA as well as maturation of the 5'-end of 23S and 5S rRNAs. (155 aa) | ||||
| rhlE | ATP-dependent RNA helicase; DEAD-box RNA helicase involved in ribosome assembly. Has RNA- dependent ATPase activity and unwinds double-stranded RNA. May play a role in the interconversion of ribosomal RNA-folding intermediates that are further processed by DeaD or SrmB during ribosome maturation. (454 aa) | ||||
| rlmF | 23S rRNA m(6)A1618 methyltransferase, SAM-dependent; Specifically methylates the adenine in position 1618 of 23S rRNA; Belongs to the methyltransferase superfamily. METTL16/RlmF family. (308 aa) | ||||
| rlmC | 23S rRNA m(5)U747 methyltransferase, SAM-dependent; Catalyzes the formation of 5-methyl-uridine at position 747 (m5U747) in 23S rRNA; Belongs to the class I-like SAM-binding methyltransferase superfamily. RNA M5U methyltransferase family. RlmC subfamily. (375 aa) | ||||
| rpsA | 30S ribosomal subunit protein S1; Required for translation of most natural mRNAs except for leaderless mRNA. Binds mRNA upstream of the Shine- Dalgarno (SD) sequence and helps it bind to the 30S ribosomal subunit; acts as an RNA chaperone to unfold structured mRNA on the ribosome but is not essential for mRNAs with strong SDs and little 5'-UTR structure, thus it may help fine-tune which mRNAs that are translated. Unwinds dsRNA by binding to transiently formed ssRNA regions; binds about 10 nucleotides. Has a preference for polypyrimidine tracts. Negatively autoregulates its own translat [...] (557 aa) | ||||
| rlmL | 23S rRNA m(2)G2445 and m(7)G2069 methyltransferases, SAM-dependent; Specifically methylates the guanine in position 2445 (m2G2445) and the guanine in position 2069 (m7G2069) of 23S rRNA. Methylation occurs before assembly of 23S rRNA into 50S subunits. Belongs to the methyltransferase superfamily. RlmKL family. (702 aa) | ||||
| rlmI | 23S rRNA m(5)C1962 methyltransferase, SAM-dependent; Specifically methylates the cytosine at position 1962 (m5C1962) of 23S rRNA. Methylation occurs before assembly of 23S rRNA into 50S subunits; Belongs to the methyltransferase superfamily. RlmI family. (396 aa) | ||||
| rimJ | ribosomal-protein-S5-alanine N-acetyltransferase; Acetylates the N-terminal alanine of ribosomal protein S5. Also plays a role in maturation of the 30S ribosomal subunit. Plays a role in the temperature regulation of pap pilin transcription. Belongs to the acetyltransferase family. RimJ subfamily. (194 aa) | ||||
| rne | Endoribonuclease; 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. Can also process other RNA species, such as RNAI, a molecule that controls the replication of ColE1 plasmid, and the cell division inhibitor DicF- RNA. It initiates the decay of RNAs by cutting them internally near their 5'-end. It is able to remove poly(A) tails by an endonucleolytic process. Required to initiate rRNA degradation during both starvation and quality control; ac [...] (1061 aa) | ||||
| rluC | 23S rRNA pseudouridine(955,2504,2580) synthase; Responsible for synthesis of pseudouridine from uracil at positions 955, 2504 and 2580 in 23S ribosomal RNA. (319 aa) | ||||
| yceD | DUF177 family protein; Plays a role in synthesis, processing and/or stability of 23S rRNA. (173 aa) | ||||
| rpmF | 50S ribosomal subunit protein L32; Protein involved in structural constituent of ribosome and translation. (57 aa) | ||||
| rluE | 23S rRNA pseudouridine(2457) synthase; Responsible for synthesis of pseudouridine from uracil-2457 in 23S ribosomal RNA; Belongs to the pseudouridine synthase RsuA family. (217 aa) | ||||
| yciV | PHP domain protein; Efficiently catalyzes the hydrolysis of the 3'-phosphate from 3',5'-bis-phosphonucleotides as well as the successive hydrolysis of 5'-phosphomononucleotides from the 5'-end of short pieces of RNA and DNA, with no specificity toward the identity of the nucleotide base. Is more efficient at hydrolyzing RNA oligonucleotides than DNA oligonucleotides. This enzyme can also hydrolyze annealed DNA duplexes, albeit at a catalytic efficiency approximately 10-fold lower than that of the corresponding single-stranded oligonucleotides. (293 aa) | ||||
| rluB | 23S rRNA pseudouridine(2605) synthase; Responsible for synthesis of pseudouridine from uracil-2605 in 23S ribosomal RNA. (291 aa) | ||||
| dbpA | ATP-dependent RNA helicase, specific for 23S rRNA; 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. Requires a single-stranded RNA loading site on the 3' side of the substrate helix. (457 aa) | ||||
| hrpA | Putative ATP-dependent helicase; Not yet known; Belongs to the DEAD box helicase family. DEAH subfamily. (1300 aa) | ||||
| ydcP | Putative peptidase; Responsible for the formation of the 5-hydroxycytidine modification at the C2501 position (ho5C2501) of 23S rRNA. May be a Fe- S protein that catalyzes ho5C2501 formation using prephenate as a hydroxyl group donor. (653 aa) | ||||
| rplT | 50S ribosomal subunit protein L20; One of the primary rRNA binding proteins, it binds close to the 5'-end of the 23S rRNA. It is important during the early stages of 50S assembly. (118 aa) | ||||
| rlmA | 23S rRNA m(1)G745 methyltransferase, SAM-dependent; Specifically methylates the guanosine in position 745 of 23S rRNA. (269 aa) | ||||
| rsmF | 16S rRNA m(5)C1407 methyltransferase, SAM-dependent; Specifically methylates the cytosine at position 1407 (m5C1407) of 16S rRNA. (479 aa) | ||||
| rsuA | 16S rRNA pseudouridine(516) synthase; Responsible for synthesis of pseudouridine from uracil-516 in 16S ribosomal RNA; Belongs to the pseudouridine synthase RsuA family. (231 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. Binds to the 5S rRNA independently of L5 and L18. Not required for binding of the 5S rRNA/L5/L18 subcomplex to 23S rRNA. (94 aa) | ||||
| der | GTPase; GTPase that plays an essential role in the late steps of ribosome biogenesis. GTPase point mutations (but not a deletion mutant) are suppressed by mild overexpression of RelA, probably due to increased levels of the stringent response mediator (p)ppGpp. 50S subunits assembled in the absence of Der are defective and unable to assemble into 70S ribosomes. GTPase activity is stimulated by YihI. Overexpression rescues an rrmJ deletion, stabilizing the 70S ribosome. Der and RrmJ are likely to share a mechanism to stabilize 50S ribosomal subunits at a very late stage of 50S subunit m [...] (490 aa) | ||||
| rlmN | Dual specificity 23S rRNA m(2)A2503, tRNA m(2)A37 methyltransferase, SAM-dependent; 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. Unmodified tRNA is not a suitable substrate for RlmN, which suggests that RlmN works in a late step during tRNA maturation. Belongs to the radical SAM superfamily. RlmN family. (384 aa) | ||||
| suhB | Inositol-1-monophosphatase; Protein involved in transcription. (267 aa) | ||||
| era | Membrane-associated, 16S rRNA-binding GTPase; An essential GTPase that binds both GDP and GTP, with nucleotide exchange occurring on the order of seconds whereas hydrolysis occurs on the order of minutes. Plays a role in numerous processes, including cell cycle regulation, energy metabolism, as a chaperone for 16S rRNA processing and 30S ribosomal subunit biogenesis. One of at least 4 proteins (Era, RbfA, RimM and RsgA/YjeQ) that assist in the late assembly stage of the 30S ribosomal subunit. Its presence in the 30S subunit may prevent translation initiation. Seems to be critical for m [...] (301 aa) | ||||
| rnc | RNase III; Digests double-stranded RNA formed within single-strand substrates, but not RNA-DNA hybrids. Involved in the processing of rRNA precursors, viral transcripts, some mRNAs and at least 1 tRNA (metY, a minor form of tRNA-init-Met). Cleaves the 30S primary rRNA transcript to yield the immediate precursors to the 16S and 23S rRNAs; cleavage can occur in assembled 30S, 50S and even 70S subunits and is influenced by the presence of ribosomal proteins. The E.coli enzyme does not cleave R.capsulatus rRNA precursor, although R.capsulatus will complement an E.coli disruption, showing s [...] (226 aa) | ||||
| lepA | Back-translocating elongation factor EF4, GTPase; 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; Belongs to the TRAFAC class translation factor GTPase superfam [...] (599 aa) | ||||
| srmB | ATP-dependent RNA helicase; DEAD-box RNA helicase involved in the assembly of the 50S ribosomal subunit at low temperature. Exhibits RNA-stimulated ATP hydrolysis and RNA unwinding activity. Acts before DeaD. Belongs to the DEAD box helicase family. SrmB subfamily. (444 aa) | ||||
| rluD | 23S rRNA pseudouridine(1911,1915,1917) synthase; Responsible for synthesis of pseudouridine from uracil at positions 1911, 1915 and 1917 in 23S ribosomal RNA. Isomerization occurs as a late step during the assembly of the large ribosomal subunit. (326 aa) | ||||
| rplS | 50S ribosomal subunit protein L19; This protein is located at the 30S-50S ribosomal subunit interface. In the 70S ribosome it has been modeled to make two contacts with the 16S rRNA of the 30S subunit forming part of bridges B6 and B8. In the 3.5 A resolved structures L14 and L19 interact and together make contact with the 16S rRNA. The protein conformation is quite different between the 50S and 70S structures, which may be necessary for translocation. (115 aa) | ||||
| rimM | Ribosome maturation factor; One of at least 4 proteins (Era, RbfA, RimM and RsgA/YjeQ) that assist in the late assembly stage of the 30S ribosomal subunit. An accessory protein needed during the final step in assembly of the 30S ribosomal subunit, for assembly of the head region (the 16S rRNA 3' domain). It may act while Era is associated and before RimP in 30S subunit assembly. Interacts with S19. Essential for efficient processing of 16S rRNA; a deletion mutant accumulates 17S rRNA. Deletions also do not assemble the head-associated ribosomal proteins correctly. May be needed both be [...] (182 aa) | ||||
| rpsP | 30S ribosomal subunit protein S16; In addition to being a ribosomal protein, S16 also has a cation-dependent endonuclease activity. (82 aa) | ||||
| ygcB | Cascade complex anti-viral R-loop helicase-annealase Cas3; CRISPR (clustered regularly interspaced short palindromic repeat), is an adaptive immune system that provides protection against mobile genetic elements (viruses, transposable elements and conjugative plasmids). CRISPR clusters contain sequences complementary to antecedent mobile elements and target invading nucleic acids. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). Cas3 plus Cascade participate in CRISPR interference, the third stage of CRISPR immunity; In the N-terminal section; belongs to the CRISP [...] (888 aa) | ||||
| rlmD | 23S rRNA m(5)U1939 methyltransferase, SAM-dependent; Catalyzes the formation of 5-methyl-uridine at position 1939 (m5U1939) in 23S rRNA; Belongs to the class I-like SAM-binding methyltransferase superfamily. RNA M5U methyltransferase family. RlmD subfamily. (433 aa) | ||||
| truC | tRNA(Ile1,Asp) pseudouridine(65) synthase; Responsible for synthesis of pseudouridine from uracil-65 in transfer RNAs; Belongs to the pseudouridine synthase RluA family. (260 aa) | ||||
| rlmM | 23S rRNA C2498 2'-O-ribose methyltransferase, SAM-dependent; Catalyzes the 2'-O-methylation at nucleotide C2498 in 23S rRNA. Modifies C2498 in naked 23S rRNA, but not in assembled 50S subunits or ribosomes. (366 aa) | ||||
| rsmE | 16S rRNA m(3)U1498 methyltransferase, SAM-dependent; Specifically methylates the N3 position of the uracil ring of uridine 1498 (m3U1498) in 16S rRNA. Acts on the fully assembled 30S ribosomal subunit. (243 aa) | ||||
| yqgF | Putative Holliday junction resolvase; Involved in the processing of the 5'-end of pre-16S rRNA during 70S ribosome maturation (processing does not occur on total cellular RNA off the ribosome); may be a nuclease. A temperature-sensitive yqgF mutant no longer grows when Rho or NusA are overproduced, and has reduced transcription of genes encoded downstream of Rho terminators; transcription increases again in the presence of the Rho inhibitor bicylomycin. (138 aa) | ||||
| yggL | DUF469 family protein; To H.influenzae HI_0341. (108 aa) | ||||
| rpsU | 30S ribosomal subunit protein S21; Protein involved in structural constituent of ribosome and translation; Belongs to the bacterial ribosomal protein bS21 family. (71 aa) | ||||
| rlmG | 23S rRNA m(2)G1835 methyltransferase, SAM-dependent; Specifically methylates the guanine in position 1835 (m2G1835) of 23S rRNA. (378 aa) | ||||
| rsmI | 16S rRNA C1402 2'-O-ribose methyltransferase, SAM-dependent; Catalyzes the 2'-O-methylation of the ribose of cytidine 1402 (C1402) in 16S rRNA. In vitro, active on the assembled 30S subunit, but not naked 16S rRNA or 70S ribosomes; Belongs to the methyltransferase superfamily. RsmI family. (286 aa) | ||||
| deaD | ATP-dependent RNA helicase; DEAD-box RNA helicase involved in various cellular processes at low temperature, including ribosome biogenesis, mRNA degradation and translation initiation. Exhibits RNA-stimulated ATP hydrolysis and RNA unwinding activity at low temperature. Involved in 50S ribosomal subunit assembly, acting after SrmB, and could also play a role in the biogenesis of the 30S ribosomal subunit. In addition, is involved in mRNA decay, via formation of a cold-shock degradosome with RNase E. Also stimulates translation of some mRNAs, probably at the level of initiation. (629 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. Binds to its own mRNA, stabilizing it 5-UTR and preventing its translation. (89 aa) | ||||
| rbfA | 30s ribosome binding factor; One of at least 4 proteins (Era, RbfA, RimM and RsgA/YjeQ) that assist in the late maturation steps of the functional core of the 30S subunit. Essential for efficient processing of pre-16S rRNA. Probably part of the 30S subunit prior to or during the final step in the processing of 16S free 30S ribosomal subunits. Probably interacts with the 5'- terminal helix region of 16S rRNA. Has affinity for free ribosomal 30S subunits but not for 70S ribosomes. Overexpression suppresses a cold-sensitive C23U 16S rRNA mutation. Overexpression decreases the lag time fol [...] (133 aa) | ||||
| nusA | Transcription termination/antitermination L factor; Participates in both transcription termination and antitermination. Involved in a variety of cellular and viral termination and antitermination processes, such as Rho-dependent transcriptional termination, intrinsic termination, and phage lambda N- mediated transcriptional antitermination. Also important for coordinating the cellular responses to DNA damage by coupling the processes of nucleotide excision repair and translesion synthesis to transcription. (495 aa) | ||||
| rimP | Ribosome maturation factor for 30S subunits; Required for maturation of 30S ribosomal subunits, probably at a late stage of ribosomal protein binding, while Era is associated and after RimM. (150 aa) | ||||
| rlmE | 23S rRNA U2552 2'-O-ribose methyltransferase, SAM-dependent; 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) | ||||
| yhbY | RNA binding protein associated with pre-50S ribosomal subunits. (97 aa) | ||||
| obgE | GTPase involved in cell partioning and DNA repair; An abundant, essential GTPase which binds GTP, GDP and ppGpp with moderate affinity. Has high guanosine nucleotide exchange rate constants for GTP and GDP, and a relatively low GTP hydrolysis rate stimulated by the 50S ribosomal subunit. It is estimated there are 34000 molecules in log-phase cells and 5600 molecules in stationary- phase cells. Required for chromosome segregation. Plays a role in the stringent response, perhaps by sequestering 50S ribosomal subunits and decreasing protein synthesis , and a non-essential role in the late [...] (390 aa) | ||||
| rpmA | 50S ribosomal subunit protein L27; Protein involved in structural constituent of ribosome and translation. (85 aa) | ||||
| rng | Ribonuclease G; Involved in the processing of the 5'-end of 16S rRNA. Could be involved in chromosome segregation and cell division. It may be one of the components of the cytoplasmic axial filaments bundles or merely regulate the formation of this structure. Belongs to the RNase E/G family. RNase G subfamily. (489 aa) | ||||
| tsaC | Threonylcarbamoyl-AMP synthase; 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. Is also able to catalyze the reverse reaction in vitro, i.e. the formation of ATP from TC-AMP and PPi. Shows higher affinity for the full-length tRNA(Thr) lacking only the t(6)A37 modification than for its fully modified counterpart. Could also [...] (190 aa) | ||||
| rsmB | 16S rRNA m(5)C967 methyltransferase, SAM-dependent; Specifically methylates the cytosine at position 967 (m5C967) of 16S rRNA. (429 aa) | ||||
| rplQ | 50S ribosomal subunit protein L17; Requires L15 for assembly into the 50S subunit. (127 aa) | ||||
| rpsD | 30S ribosomal subunit protein S4; One of two assembly initiator proteins for the 30S subunit, it binds directly to 16S rRNA where it nucleates assembly of the body of the 30S subunit. Plays a role in mRNA unwinding by the ribosome, possibly by forming part of a processivity clamp. Also functions as a rho-dependent antiterminator of rRNA transcription, increasing the synthesis of rRNA under conditions of excess protein, allowing a more rapid return to homeostasis. Binds directly to RNA polymerase; Belongs to the universal ribosomal protein uS4 family. (206 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 (By similarity); Belongs to the universal ribosomal protein uS11 family. (129 aa) | ||||
| rpmD | 50S ribosomal subunit protein L30; Protein involved in structural constituent of ribosome and translation. (59 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). The physical location of this protein suggests it may also play a role in mRNA unwinding by the ribosome, possibly by forming part of a processivity clamp. (167 aa) | ||||
| rplF | 50S ribosomal subunit protein L6; This protein binds directly to at least 2 domains of the 23S ribosomal RNA, thus 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. (177 aa) | ||||
| rpsH | 30S ribosomal subunit 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) | ||||
| 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. (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. Its 5S rRNA binding is significantly enhanced in the presence of L18. 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. It is not thought to be involved in the functions of the mature 50S subunit in vitro; Belongs to the universal ribosomal protein uL24 family. (104 aa) | ||||