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surA | Peptidyl-prolyl cis-trans isomerase; Chaperone involved in the correct folding and assembly of outer membrane proteins. Recognizes specific patterns of aromatic residues and the orientation of their side chains, which are found more frequently in integral outer membrane proteins. May act in both early periplasmic and late outer membrane-associated steps of protein maturation. (428 aa) | ||||
yaeL | Putative membrane-associated Zn-dependent protease; A site-2 regulated intramembrane protease (S2P) that cleaves the peptide bond between 'Ala-108' and 'Cys-109' in the transmembrane region of RseA. Part of a regulated intramembrane proteolysis (RIP) cascade. Acts on DegS-cleaved RseA to release the cytoplasmic domain of RseA. This provides the cell with sigma-E (RpoE) activity through the proteolysis of RseA (By similarity); Belongs to the peptidase M50B family. (450 aa) | ||||
hlpA | Histone-like protein, located in outer membrane; Molecular chaperone that interacts specifically with outer membrane proteins, thus maintaining the solubility of early folding intermediates during passage through the periplasm. (161 aa) | ||||
rnhA | RNase HI; Endonuclease that specifically degrades the RNA of RNA-DNA hybrids. (155 aa) | ||||
ybaD | Putative transcriptional regulator; Negatively regulates transcription of bacterial ribonucleotide reductase nrd genes and operons by binding to NrdR- boxes; Belongs to the NrdR family. (149 aa) | ||||
clpP | Proteolytic subunit of clpA-clpP ATP-dependent serine protease; Cleaves peptides in various proteins in a process that requires ATP hydrolysis. Has a chymotrypsin-like activity. Plays a major role in the degradation of misfolded proteins. Belongs to the peptidase S14 family. (207 aa) | ||||
clpX | Specificity component of clpA-clpP ATP-dependent serine protease, chaperone; ATP-dependent specificity component of the Clp protease. It directs the protease to specific substrates. Can perform chaperone functions in the absence of ClpP. (423 aa) | ||||
fepB | ABC superfamily (peri_perm); similar to E. coli ferric enterobactin (enterochelin) binding protein; periplasmic component (AAC73693.1); Blastp hit to AAC73693.1 (318 aa), 79% identity in aa 1 - 318. (318 aa) | ||||
tolQ | Tol protein, membrane-spanning inner membrane protein; Part of the Tol-Pal system, which plays a role in outer membrane invagination during cell division and is important for maintaining outer membrane integrity. Required, with TolR, for the proton motive force-dependent activation of TolA and for TolA-Pal interaction. (230 aa) | ||||
tolR | Tol protein, role in outer membrane integrity; Part of the Tol-Pal system, which plays a role in outer membrane invagination during cell division and is important for maintaining outer membrane integrity. Required, with TolQ, for the proton motive force-dependent activation of TolA and for TolA-Pal interaction. (142 aa) | ||||
tolB | Tol protein required for outer membrane integrity; Part of the Tol-Pal system, which plays a role in outer membrane invagination during cell division and is important for maintaining outer membrane integrity. TolB occupies a key intermediary position in the Tol-Pal system because it communicates directly with both membrane-embedded components, Pal in the outer membrane and TolA in the inner membrane. (430 aa) | ||||
pal | Tol protein required for outer membrane integrity; Part of the Tol-Pal system, which plays a role in outer membrane invagination during cell division and is important for maintaining outer membrane integrity. (174 aa) | ||||
phoQ | Sensory kinase protein in two-component regulatory system with PhoP; Member of the two-component regulatory system PhoP/PhoQ which regulates the expression of genes involved in virulence, adaptation to acidic and low Mg(2+) environments and resistance to host defense antimicrobial peptides. Essential for intramacrophage survival of S.typhimurium. In low periplasmic Mg(2+), PhoQ functions as a membrane- associated protein kinase that undergoes autophosphorylation and subsequently transfers the phosphate to PhoP, resulting in the expression of PhoP-activated genes (PAG) and repression of [...] (487 aa) | ||||
phoP | Response regulator in two-component regulatory system with PhoQ; Member of the two-component regulatory system PhoP/PhoQ which regulates the expression of genes involved in virulence, adaptation to acidic and low Mg(2+) environments and resistance to host defense antimicrobial peptides. Essential for intramacrophage survival of S.typhimurium. In low periplasmic Mg(2+), PhoQ phosphorylates PhoP, resulting in the expression of PhoP-activated genes (PAG) and repression of PhoP-repressed genes (PRG). In high periplasmic Mg(2+), PhoQ dephosphorylates phospho-PhoP, resulting in the repressio [...] (224 aa) | ||||
tonB | TonB; Interacts with outer membrane receptor proteins that carry out high-affinity binding and energy dependent uptake into the periplasmic space of specific substrates such as cobalamin, and various iron compounds (such as iron dicitrate, enterochelin, aerobactin, etc.). In the absence of TonB these receptors bind their substrates but do not carry out active transport. TonB also interacts with some colicins and is involved in the energy-dependent, irreversible steps of bacteriophages phi 80 and T1 infection. It could act to transduce energy from the cytoplasmic membrane to specific en [...] (242 aa) | ||||
galF | Putative glucose-1-phosphate uridylyltransferase, non-catalytic subunit; May play a role in stationary phase survival; Belongs to the UDPGP type 2 family. (297 aa) | ||||
wzc | Putative tyrosine-protein kinase; Required for the extracellular polysaccharide colanic acid synthesis. The autophosphorylated form is inactive. Probably involved in the export of colanic acid from the cell to medium (By similarity). Belongs to the etk/wzc family. (719 aa) | ||||
yfgL | Putative serine/threonine protein kinase; Part of the outer membrane protein assembly complex, which is involved in assembly and insertion of beta-barrel proteins into the outer membrane. (392 aa) | ||||
yfhC | Putative cytosine/adenosine deaminase; Catalyzes the deamination of adenosine to inosine at the wobble position 34 of tRNA(Arg2); Belongs to the cytidine and deoxycytidylate deaminase family. (183 aa) | ||||
rseB | Anti sigma E (sigma 24) factor, negative regulator; Similar to E. coli regulates activity of sigma-E factor (AAC75624.1); Blastp hit to AAC75624.1 (318 aa), 89% identity in aa 1 - 318. (318 aa) | ||||
rseA | Anti sigma E (sigma 24) factor, negative regulator; An anti-sigma factor for extracytoplasmic function (ECF) sigma factor sigma-E (RpoE). ECF sigma factors are held in an inactive form by an anti-sigma factor until released by regulated intramembrane proteolysis (RIP). RIP occurs when an extracytoplasmic signal triggers a concerted proteolytic cascade to transmit information and elicit cellular responses. The membrane-spanning regulatory substrate protein is first cut periplasmically (site-1 protease, S1P, DegS), then within the membrane itself (site-2 protease, S2P, RseP), while cytop [...] (216 aa) | ||||
rpoE | Sigma E (sigma 24) factor of RNA polymerase; Sigma factors are initiation factors that promote the attachment of RNA polymerase (RNAP) to specific initiation sites and are then released. Extracytoplasmic function (ECF) sigma-E controls the envelope stress response, responding to periplasmic protein stress, increased levels of periplasmic lipopolysaccharide (LPS) as well as acid stress, heat shock and oxidative stress; it controls protein processing in the extracytoplasmic compartment (By similarity). (191 aa) | ||||
recA | DNA strand exchange and recombination protein; Can catalyze the hydrolysis of ATP in the presence of single- stranded DNA, the ATP-dependent uptake of single-stranded DNA by duplex DNA, and the ATP-dependent hybridization of homologous single-stranded DNAs. It interacts with LexA causing its activation and leading to its autocatalytic cleavage. (353 aa) | ||||
ygbQ | Putative Septum formation initiator; Essential cell division protein. May link together the upstream cell division proteins, which are predominantly cytoplasmic, with the downstream cell division proteins, which are predominantly periplasmic. (103 aa) | ||||
iciA | Inhibitor of replication initiation; Controls the transcription of genes involved in arginine and lysine metabolism; Belongs to the LysR transcriptional regulatory family. (297 aa) | ||||
yggV | Putative xanthosine triphosphate pyrophosphatase; Pyrophosphatase that catalyzes the hydrolysis of nucleoside triphosphates to their monophosphate derivatives, with a high preference for the non-canonical purine nucleotides XTP (xanthosine triphosphate), dITP (deoxyinosine triphosphate) and ITP. Seems to function as a house-cleaning enzyme that removes non-canonical purine nucleotides from the nucleotide pool, thus preventing their incorporation into DNA/RNA and avoiding chromosomal lesions. Belongs to the HAM1 NTPase family. (197 aa) | ||||
exbD | tonB-dependent uptake of B colicins; similar to E. coli uptake of enterochelin; tonB-dependent uptake of B colicins (AAC76041.1); Blastp hit to AAC76041.1 (141 aa), 93% identity in aa 1 - 141. (141 aa) | ||||
exbB | Uptake of enterochelin; Involved in the TonB-dependent energy-dependent transport of various receptor-bound substrates. Protects ExbD from proteolytic degradation and functionally stabilizes TonB (By similarity). (244 aa) | ||||
degS | Periplasmic serine endoprotease; Similar to E. coli protease (AAC76267.1); Blastp hit to AAC76267.1 (355 aa), 91% identity in aa 1 - 355. (356 aa) | ||||
rfe | Undecaprenyl-phosphate N-acetylglucosaminyltransferase; Catalyzes the transfer of the GlcNAc-1-phosphate moiety from UDP-GlcNAc onto the carrier lipid undecaprenyl phosphate (C55-P), yielding GlcNAc-pyrophosphoryl-undecaprenyl (GlcNAc-PP-C55). Belongs to the glycosyltransferase 4 family. WecA subfamily. (367 aa) | ||||
rffG | Similar to E. coli dTDP-glucose 4,6-dehydratase (AAC76793.1); Blastp hit to AAC76793.1 (355 aa), 88% identity in aa 1 - 354; Belongs to the NAD(P)-dependent epimerase/dehydratase family. dTDP-glucose dehydratase subfamily. (355 aa) | ||||
rffH | Similar to E. coli glucose-1-phosphate thymidylyltransferase (AAC76794.1); Blastp hit to AAC76794.1 (293 aa), 95% identity in aa 240 - 24. (74 aa) | ||||
wecD | Lipopolysaccharide biosynthesis protein; Catalyzes the acetylation of dTDP-fucosamine (dTDP-4-amino- 4,6-dideoxy-D-galactose) to dTDP-Fuc4NAc, which is utilized in the biosynthesis of the enterobacterial common antigen (ECA). Belongs to the WecD family. (182 aa) | ||||
wzxE | O-antigen translocase in LPS biosyntesis; Mediates the transbilayer movement of Und-PP-GlcNAc-ManNAcA- Fuc4NAc (lipid III) from the inner to the outer leaflet of the cytoplasmic membrane during the assembly of enterobacterial common antigen (ECA); Belongs to the polysaccharide transport (PST) (TC 2.A.66.2) family. (416 aa) | ||||
yifK | Putative APC family amino-acid transport protein; Probable amino-acid or metabolite transport protein; Belongs to the amino acid-polyamine-organocation (APC) superfamily. (461 aa) | ||||
cyaA | Adenylate cyclase. (SW:CYAA_SALTY). (848 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) | ||||
oxyR | Regulatory protein sensor for oxidative stress; Regulates intracellular hydrogen peroxide (LysR family); similar to E. coli activator, hydrogen peroxide-inducible genes (AAC76943.1); Blastp hit to AAC76943.1 (305 aa), 95% identity in aa 1 - 305; Belongs to the LysR transcriptional regulatory family. (305 aa) | ||||
purH | Phosphoribosylaminoimidazolecarboxamide formyltransferase; Bifunctional; bifunctional purine biosynthesis protein PURH. (SW:PUR9_SALTY); IMP cyclohydrolase. (529 aa) | ||||
yijC | Putative TetR/AcrR family transcriptional repressor; Represses the transcription of fabB, involved in unsaturated fatty acid (UFA) biosynthesis. By controlling UFA production, FabR directly influences the physical properties of the membrane bilayer. (211 aa) | ||||
purA | Adenylosuccinate synthetase; Plays an important role in the de novo pathway of purine nucleotide biosynthesis. Catalyzes the first committed step in the biosynthesis of AMP from IMP; Belongs to the adenylosuccinate synthetase family. (432 aa) |