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gadC gadC osmC osmC pspA pspA rpmF rpmF rne rne ihfB ihfB rpsA rpsA gstB gstB glnP glnP tatE tatE lacZ lacZ betT betT rpsB rpsB rpsT rpsT rnb rnb rpmB rpmB cspA cspA rpsL rpsL rplN rplN rpmC rpmC rpsG rpsG rplE rplE rplX rplX idnT idnT rplI rplI rpsF rpsF rnr rnr hfq hfq lexA lexA rplL rplL rplJ rplJ rplA rplA rplK rplK rpmE rpmE rhlB rhlB rpmH rpmH rpsN rpsN rpsH rpsH rplF rplF rplO rplO rpmJ rpmJ rpsM rpsM rpsK rpsK rpsD rpsD rplQ rplQ rng rng rplM rplM rpsI rpsI rplU rplU rpmA rpmA rpsO rpsO pnp pnp patA patA rpsU rpsU pgk pgk rppH rppH csrA csrA rpsP rpsP rplS rplS srmB srmB rnc rnc hcaT hcaT rnd rnd rpmI rpmI rplT rplT
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query proteins and first shell of interactors
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second shell of interactors
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proteins of unknown 3D structure
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a 3D structure is known or predicted
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gadCGlutamate:gamma-aminobutyric acid antiporter; Involved in glutamate-dependent acid resistance. Imports glutamate inside the cell while simultaneously exporting to the periplasm the GABA produced by GadA and GadB. The gad system helps to maintain a near-neutral intracellular pH when cells are exposed to extremely acidic conditions. The ability to survive transit through the acidic conditions of the stomach is essential for successful colonization of the mammalian host by commensal and pathogenic bacteria; Belongs to the amino acid-polyamine-organocation (APC) superfamily. Glutamate:GABA [...] (511 aa)
osmCLipoyl-dependent Cys-based peroxidase, hydroperoxide resistance; Preferentially metabolizes organic hydroperoxides over inorganic hydrogen peroxide; Belongs to the OsmC/Ohr family. (143 aa)
pspARegulatory protein for phage-shock-protein operon; The phage shock protein (psp) operon (pspABCDE) may play a significant role in the competition for survival under nutrient- or energy-limited conditions. PspA negatively regulates expression of the pspABCDE promoter and of pspG through negative regulation of the psp- specific transcriptional activator PspF. Is also required for membrane integrity, efficient translocation and maintenance of the proton motive force. Belongs to the PspA/IM30 family. (222 aa)
rpmF50S ribosomal subunit protein L32; Protein involved in structural constituent of ribosome and translation. (57 aa)
rneEndoribonuclease; 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)
ihfBIntegration host factor (IHF), DNA-binding protein, beta subunit; One of the 2 subunits of integration host factor (IHF), a specific DNA-binding protein that functions in genetic recombination as well as in transcriptional and translational control. Has an essential role in conjugative DNA transfer (CDT), the unidirectional transfer of ssDNA plasmid from a donor to a recipient cell. It is the central mechanism by which antibiotic resistance and virulence factors are propagated in bacterial populations. Part of the relaxosome, which facilitates a site- and strand-specific cut in the ori [...] (94 aa)
rpsA30S 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)
gstBGlutathione S-transferase; Conjugation of reduced glutathione to a wide number of exogenous and endogenous hydrophobic electrophiles. Catalyzes the glutathione-dependent dehalogenation of bromoacetate. (208 aa)
glnPGlutamine transporter subunit; Part of the binding-protein-dependent transport system for glutamine; probably responsible for the translocation of the substrate across the membrane. (219 aa)
tatESec-independent protein translocase protein TatE; Part of the twin-arginine translocation (Tat) system that transports large folded proteins containing a characteristic twin- arginine motif in their signal peptide across membranes. TatE shares overlapping functions with TatA; Belongs to the TatA/E family. TatE subfamily. (67 aa)
lacZbeta-D-galactosidase; Protein involved in carbohydrate catabolic process; Belongs to the glycosyl hydrolase 2 family. (1024 aa)
betTCholine transporter of high affinity; High-affinity uptake of choline driven by a proton-motive force; Belongs to the BCCT transporter (TC 2.A.15) family. (677 aa)
rpsB30S ribosomal subunit protein S2; Required for ribosomal protein S1 to bind to the 30S subunit. (241 aa)
rpsT30S ribosomal subunit protein S20; Binds directly to 16S ribosomal RNA. (87 aa)
rnbRibonuclease II; Involved in mRNA degradation. Hydrolyzes single-stranded polyribonucleotides processively in the 3' to 5' direction. RNases 2 and R (rnr) contribute to rRNA degradation during starvation, while RNase R and PNPase (pnp) are the major contributors to quality control of rRNA during steady state growth. This RNase is required to decrease expression of RNase PH (rnp) at 42 degrees Celsius during starvation, which in turn represses rRNA degradation. Belongs to the RNR ribonuclease family. RNase II subfamily. (644 aa)
rpmB50S ribosomal subunit protein L28; Protein involved in structural constituent of ribosome and translation. (78 aa)
cspARNA chaperone and antiterminator, cold-inducible; 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'. (70 aa)
rpsL30S ribosomal subunit protein S12; With S4 and S5 plays an important role in translational accuracy. Cryo-EM studies suggest that S12 contacts the EF-Tu bound tRNA in the A-site during codon-recognition. This contact is most likely broken as the aminoacyl-tRNA moves into the peptidyl transferase center in the 50S subunit; Belongs to the universal ribosomal protein uS12 family. (124 aa)
rplN50S ribosomal subunit protein L14; This protein binds directly to 23S ribosomal RNA. In the E.coli 70S ribosome it has been modeled to make two contacts with the 16S rRNA of the 30S subunit, forming part of bridges B5 and B8, connecting the 2 subunits. Although the protein undergoes significant rotation during the transition from an initiation to and EF-G bound state, the bridges remain stable. In the 3.5 A resolved structures L14 and L19 interact and together make contact with the 16S rRNA in bridges B5 and B8. (123 aa)
rpmC50S ribosomal subunit protein L29; Binds 23S rRNA. It is not essential for growth. (63 aa)
rpsG30S 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)
rplE50S 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)
rplX50S 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)
idnTL-idonate and D-gluconate transporter; Transports L-idonate, D-gluconate and 5-keto-D-gluconate, from the periplasm across the inner membrane. (439 aa)
rplI50S ribosomal subunit protein L9; One of the primary rRNA binding proteins, it binds very close to the 3' end of the 23S rRNA; Belongs to the bacterial ribosomal protein bL9 family. (149 aa)
rpsF30S ribosomal subunit protein S6; Binds together with S18 to 16S ribosomal RNA. (131 aa)
rnrExoribonuclease R, RNase R; 3'-5' exoribonuclease that releases 5'-nucleoside monophosphates and is involved in maturation of structured RNAs (rRNAs, tRNAs and SsrA/tmRNA). In stationary phase, involved in the post- transcriptional regulation of ompA mRNA stability. Shortens RNA processively to di- and trinucleotides. In vitro, exhibits helicase activity, which is independent of its RNase activity. RNases 2 and R (rnb and this entry) contribute to rRNA degradation during starvation, while RNase R and PNPase (this entry and pnp) are the major contributors to quality control of rRNA duri [...] (813 aa)
hfqGlobal sRNA chaperone; 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. Involved in the regulation of stress responses mediated by the sigma factors RpoS, sigma-E and sigma-32. Binds with high specificity to tRNAs. Binds sRNA antitoxin RalA. In vitro, stimulates synthesis of long tails by poly(A) polymerase I. Required for RNA phage Qbeta replication. Seems to play a role in persister cell formation; upon overexpression decreases pers [...] (102 aa)
lexATranscriptional repressor of SOS regulon; Represses a number of genes involved in the response to DNA damage (SOS response), including recA and lexA. Binds to the 16 bp palindromic sequence 5'-CTGTATATATATACAG-3'. In the presence of single- stranded DNA, RecA interacts with LexA causing an autocatalytic cleavage which disrupts the DNA-binding part of LexA, leading to derepression of the SOS regulon and eventually DNA repair. Implicated in hydroxy radical-mediated cell death induced by hydroxyurea treatment .The SOS response controls an apoptotic-like death (ALD) induced (in the absence [...] (202 aa)
rplL50S ribosomal subunit protein L7/L12; The binding site for several of the GTPase factors involved in protein synthesis (IF-2, EF-Tu, EF-G and RF3). Is thus essential for accurate translation. Deletion of 1 of the L12 dimers from the ribosome (by deleting the binding site on L10) leads to decreased IF-2 association with the 70S ribosome and decreased stimulation of the GTPase activity of EF-G; Belongs to the bacterial ribosomal protein bL12 family. (121 aa)
rplJ50S ribosomal subunit protein L10; Forms part of the ribosomal stalk, playing a central role in the interaction of the ribosome with GTP-bound translation factors. Belongs to the universal ribosomal protein uL10 family. (165 aa)
rplA50S 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)
rplK50S 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)
rpmE50S ribosomal subunit protein L31; Binds the 23S rRNA. (70 aa)
rhlBATP-dependent RNA 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)
rpmH50S ribosomal subunit protein L34; Protein involved in structural constituent of ribosome and translation; Belongs to the bacterial ribosomal protein bL34 family. (46 aa)
rpsN30S 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)
rpsH30S 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)
rplF50S 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)
rplO50S ribosomal subunit protein L15; This protein binds the 5S rRNA. It is required for the late stages of subunit assembly, and is essential for 5S rRNA assembly onto the ribosome; Belongs to the universal ribosomal protein uL15 family. (144 aa)
rpmJ50S ribosomal subunit protein L36; Protein involved in structural constituent of ribosome and translation; Belongs to the bacterial ribosomal protein bL36 family. (38 aa)
rpsM30S ribosomal subunit protein S13; Located at the top of the head of the 30S subunit, it contacts several helices of the 16S rRNA. Contacts the tRNAs in the A and P sites. Belongs to the universal ribosomal protein uS13 family. (118 aa)
rpsK30S 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)
rpsD30S 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)
rplQ50S ribosomal subunit protein L17; Requires L15 for assembly into the 50S subunit. (127 aa)
rngRibonuclease 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)
rplM50S 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)
rpsI30S ribosomal subunit protein S9; The C-terminal tail plays a role in the affinity of the 30S P site for different tRNAs. Mutations that decrease this affinity are suppressed in the 70S ribosome. (130 aa)
rplU50S ribosomal subunit protein L21; This protein binds to 23S rRNA in the presence of protein L20. (103 aa)
rpmA50S ribosomal subunit protein L27; Protein involved in structural constituent of ribosome and translation. (85 aa)
rpsO30S 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)
pnpPolynucleotide phosphorylase/polyadenylase; Involved in mRNA degradation. Catalyzes the phosphorolysis of single-stranded polyribonucleotides processively in the 3'- to 5'- direction. Also involved, along with RNase II, in tRNA processing. RNases II and R contribute to rRNA degradation during starvation, while RNase R and PNPase are the major contributors to quality control of rRNA during steady state growth. (711 aa)
patAPutrescine:2-oxoglutaric acid aminotransferase, PLP-dependent; Catalyzes the aminotransferase reaction from putrescine to 2- oxoglutarate, leading to glutamate and 4-aminobutanal, which spontaneously cyclizes to form 1-pyrroline. This is the first step in one of two pathways for putrescine degradation, where putrescine is converted into 4- aminobutanoate (gamma-aminobutyrate or GABA) via 4-aminobutanal, which allows E.coli to grow on putrescine as the sole nitrogen source. Also functions as a cadaverine transaminase in a a L-lysine degradation pathway to succinate that proceeds via cad [...] (459 aa)
rpsU30S ribosomal subunit protein S21; Protein involved in structural constituent of ribosome and translation; Belongs to the bacterial ribosomal protein bS21 family. (71 aa)
pgkPhosphoglycerate kinase; Protein involved in glycolysis and gluconeogenesis; Belongs to the phosphoglycerate kinase family. (387 aa)
rppHRNA pyrophosphohydrolase; Master regulator of 5'-end-dependent mRNA decay. Accelerates the degradation of transcripts by removing pyrophosphate from the 5'-end of triphosphorylated RNA, leading to a more labile monophosphorylated state that can stimulate subsequent ribonuclease cleavage. Preferentially hydrolyzes diadenosine penta-phosphate with ATP as one of the reaction products. Also able to hydrolyze diadenosine hexa- and tetra-phosphate. Has no activity on diadenosine tri-phosphate, ADP-ribose, NADH and UDP-glucose. In an RNase PH (rph) wild-type strain background, RppH is not req [...] (176 aa)
csrAPleiotropic regulatory protein for carbon source metabolism; A key translational regulator that binds mRNA to regulate translation initiation and/or mRNA stability, initially identified for its effects on central carbon metabolism. 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. Binds to the 5'-UTR of mRNA to repress or activate translation; 2 binding sites on the homodimer can bridge 2 sites within target RNA (By similarity). Exerts reciprocal effects on [...] (61 aa)
rpsP30S ribosomal subunit protein S16; In addition to being a ribosomal protein, S16 also has a cation-dependent endonuclease activity. (82 aa)
rplS50S 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)
srmBATP-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)
rncRNase 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)
hcaTPutative 3-phenylpropionic transporter; Probable permease involved in the uptake of 3-phenylpropionic acid; Belongs to the major facilitator superfamily. Phenyl propionate permease (PPP) (TC 2.A.1.27) family. (379 aa)
rndRibonuclease D; Exonuclease involved in the 3' processing of various precursor tRNAs. Initiates hydrolysis at the 3'-terminus of an RNA molecule and releases 5'-mononucleotides; Belongs to the RNase D family. (375 aa)
rpmI50S ribosomal subunit protein A; Protein involved in structural constituent of ribosome and translation; Belongs to the bacterial ribosomal protein bL35 family. (65 aa)
rplT50S 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)
Your Current Organism:
Escherichia coli K12
NCBI taxonomy Id: 511145
Other names: E. coli str. K-12 substr. MG1655, Escherichia coli MG1655, Escherichia coli str. K-12 substr. MG1655, Escherichia coli str. K12 substr. MG1655, Escherichia coli str. MG1655, Escherichia coli strain MG1655
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