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gapA gapA rplS rplS grpE grpE smpB smpB fljA fljA dnaK dnaK dnaJ dnaJ caiF caiF rpsB rpsB tsf tsf frr frr yafH yafH phoB phoB phoR phoR adk adk ompF ompF phoQ phoQ phoP phoP infC infC rplT rplT pspE pspE topA topA fadD fadD cspC cspC cheB cheB cheA cheA uvrY uvrY fliB fliB yehT yehT yehU yehU ompC ompC gyrA gyrA aroC aroC yfdZ yfdZ rseA rseA fljB fljB luxS luxS pyrG pyrG barA barA recC recC pgk pgk ygiX ygiX ygiY ygiY rpmA rpmA rpsI rpsI rplM rplM rpsK rpsK rpsM rpsM rpsE rpsE rplF rplF rplE rplE rplN rplN rplP rplP rpsC rpsC rpsS rpsS rplB rplB rplD rplD rplC rplC rpsJ rpsJ fusA fusA rpsL rpsL envZ envZ ompR ompR cspA cspA mgtB mgtB mgtC mgtC dnaA dnaA rplK rplK rplA rplA rplL rplL mopB mopB mopA mopA
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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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gapAGlyceraldehyde-3-phosphate dehydrogenase A; Catalyzes the oxidative phosphorylation of glyceraldehyde 3- phosphate (G3P) to 1,3-bisphosphoglycerate (BPG) using the cofactor NAD. The first reaction step involves the formation of a hemiacetal intermediate between G3P and a cysteine residue, and this hemiacetal intermediate is then oxidized to a thioester, with concomitant reduction of NAD to NADH. The reduced NADH is then exchanged with the second NAD, and the thioester is attacked by a nucleophilic inorganic phosphate to produce BPG. (331 aa)
rplS50S ribosomal subunit protein L19; This protein is located at the 30S-50S ribosomal subunit interface and may play a role in the structure and function of the aminoacyl-tRNA binding site. (115 aa)
grpEMolecular chaparone; Participates actively in the response to hyperosmotic and heat shock by preventing the aggregation of stress-denatured proteins, in association with DnaK and GrpE. It is the nucleotide exchange factor for DnaK and may function as a thermosensor. Unfolded proteins bind initially to DnaJ; upon interaction with the DnaJ-bound protein, DnaK hydrolyzes its bound ATP, resulting in the formation of a stable complex. GrpE releases ADP from DnaK; ATP binding to DnaK triggers the release of the substrate protein, thus completing the reaction cycle. Several rounds of ATP-depe [...] (196 aa)
smpBSmall 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)
fljARepressor of fliC; Transcriptional repressor of the FliC phase-1 flagellin. (179 aa)
dnaKChaperone Hsp70; Acts as a chaperone. (638 aa)
dnaJHeat shock protein DnaJ; Participates actively in the response to hyperosmotic and heat shock by preventing the aggregation of stress-denatured proteins and by disaggregating proteins, also in an autonomous, DnaK-independent fashion. Unfolded proteins bind initially to DnaJ; upon interaction with the DnaJ-bound protein, DnaK hydrolyzes its bound ATP, resulting in the formation of a stable complex. GrpE releases ADP from DnaK; ATP binding to DnaK triggers the release of the substrate protein, thus completing the reaction cycle. Several rounds of ATP-dependent interactions between DnaJ, [...] (379 aa)
caiFSimilar to E. coli transcriptional regulator of cai operon (AAC73145.1); Blastp hit to AAC73145.1 (166 aa), 76% identity in aa 36 - 166. (131 aa)
rpsBSimilar to E. coli 30S ribosomal subunit protein S2 (AAC73280.1); Blastp hit to AAC73280.1 (241 aa), 97% identity in aa 1 - 241; Belongs to the universal ribosomal protein uS2 family. (241 aa)
tsfProtein chain elongation factor EF-Ts; Associates with the EF-Tu.GDP complex and induces the exchange of GDP to GTP. It remains bound to the aminoacyl-tRNA.EF- Tu.GTP complex up to the GTP hydrolysis stage on the ribosome. Belongs to the EF-Ts family. (283 aa)
frrRibosome releasing factor; Responsible for the release of ribosomes from messenger RNA at the termination of protein biosynthesis. May increase the efficiency of translation by recycling ribosomes from one round of translation to another; Belongs to the RRF family. (185 aa)
yafHPutative acyl-CoA dehydrogenase; Catalyzes the dehydrogenation of acyl-coenzymes A (acyl-CoAs) to 2-enoyl-CoAs, the first step of the beta-oxidation cycle of fatty acid degradation. Is required for S.typhimurium to utilize medium- and long-chain fatty acids as sole carbon sources for growth. Is needed for bacterial survival during carbone-source starvation. (814 aa)
phoBRegulates pho regulon (OmpR family); similar to E. coli positive response regulator for pho regulon, sensor is PhoR (or CreC) (AAC73502.1); Blastp hit to AAC73502.1 (229 aa), 95% identity in aa 1 - 229. (229 aa)
phoRSensory kinase in two-component regulatory system with PhoB, regulates pho regulon; Similar to E. coli positive and negative sensor protein for pho regulon (AAC73503.1); Blastp hit to AAC73503.1 (431 aa), 90% identity in aa 1 - 431. (431 aa)
adkAdenylate kinase; Catalyzes the reversible transfer of the terminal phosphate group between ATP and AMP. Plays an important role in cellular energy homeostasis and in adenine nucleotide metabolism; Belongs to the adenylate kinase family. (214 aa)
ompFOuter membrane protein 1a (ia;b;f), porin; Forms pores that allow passive diffusion of small molecules across the outer membrane. It is also a receptor for the bacteriophage T2 (By similarity). (363 aa)
phoQSensory 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)
phoPResponse 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)
infCProtein chain initiation factor IF-3; IF-3 binds to the 30S ribosomal subunit and shifts the equilibrum between 70S ribosomes and their 50S and 30S subunits in favor of the free subunits, thus enhancing the availability of 30S subunits on which protein synthesis initiation begins. (144 aa)
rplT50S 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)
pspESimilar to E. coli phage shock protein (AAC74390.1); Blastp hit to AAC74390.1 (104 aa), 66% identity in aa 1 - 103. (104 aa)
topADNA topoisomerase type I, omega protein; Releases the supercoiling and torsional tension of DNA, which is introduced during the DNA replication and transcription, by transiently cleaving and rejoining one strand of the DNA duplex. Introduces a single-strand break via transesterification at a target site in duplex DNA. The scissile phosphodiester is attacked by the catalytic tyrosine of the enzyme, resulting in the formation of a DNA- (5'-phosphotyrosyl)-enzyme intermediate and the expulsion of a 3'-OH DNA strand. The free DNA strand then undergoes passage around the unbroken strand, th [...] (865 aa)
fadDacyl-CoA synthetase; Catalyzes the esterification, concomitant with transport, of exogenous long-chain fatty acids into metabolically active CoA thioesters for subsequent degradation or incorporation into phospholipids; Belongs to the ATP-dependent AMP-binding enzyme family. (561 aa)
cspCCold shock protein; Multicopy suppresses mukB mutants, putative regulator; cold shock-like protein CSPC. (SW:CSPC_SALTY). (69 aa)
cheBMethyl esterase; Involved in chemotaxis. Part of a chemotaxis signal transduction system that modulates chemotaxis in response to various stimuli. Catalyzes the demethylation of specific methylglutamate residues introduced into the chemoreceptors (methyl-accepting chemotaxis proteins or MCP) by CheR. Also mediates the irreversible deamidation of specific glutamine residues to glutamic acid (By similarity). Belongs to the CheB family. (349 aa)
cheASensory histitine protein kinase; Involved in the transmission of sensory signals from the chemoreceptors to the flagellar motors. CheA is autophosphorylated; it can transfer its phosphate group to either CheB or CheY. (671 aa)
uvrYPutative LuxR/UhpA family response regulator; Similar to E. coli putative 2-component transcriptional regulator (AAC74981.1); Blastp hit to AAC74981.1 (218 aa), 96% identity in aa 1 - 218. (218 aa)
fliBN-methylation of lysine residues in flagellin; Post-translationally modifies flagellin by methylation of epsilon amino group of surface-exposed lysine residues. (401 aa)
yehTPutative regulator; Member of the two-component regulatory system BtsS/BtsR. BtsR regulates expression of btsT by binding to its promoter region. (239 aa)
yehUPutative sensor/kinase in regulatory system; Similar to E. coli putative 2-component sensor protein (AAC75187.1); Blastp hit to AAC75187.1 (561 aa), 91% identity in aa 1 - 561. (561 aa)
ompCOuter membrane protein 1b (ib;c); Forms pores that allow passive diffusion of small molecules across the outer membrane. (378 aa)
gyrADNA gyrase, subunit A; A type II topoisomerase that negatively supercoils closed circular double-stranded (ds) DNA in an ATP-dependent manner to modulate DNA topology and maintain chromosomes in an underwound state, and also catalyzes the interconversion of other topological isomers of double-stranded DNA rings, including catenanes and knotted rings. Replenishes negative supercoiling downstream of highly transcribed genes to help control overall chromosomal supercoiling density. E.coli makes 15% more negative supercoils in pBR322 plasmid DNA than S.typhimurium; the S.typhimurium GyrB s [...] (878 aa)
aroCChorismate synthase; Catalyzes the anti-1,4-elimination of the C-3 phosphate and the C-6 proR hydrogen from 5-enolpyruvylshikimate-3-phosphate (EPSP) to yield chorismate, which is the branch point compound that serves as the starting substrate for the three terminal pathways of aromatic amino acid biosynthesis. This reaction introduces a second double bond into the aromatic ring system. (361 aa)
yfdZSimilar to E. coli putative aminotransferase (AAC75438.1); Blastp hit to AAC75438.1 (412 aa), 95% identity in aa 1 - 412. (412 aa)
rseAAnti 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)
fljBFilament structural protein; Flagellin is the subunit protein which polymerizes to form the filaments of bacterial flagella. (506 aa)
luxSQuorum sensing protein; Involved in the synthesis of autoinducer 2 (AI-2) which is secreted by bacteria and is used to communicate both the cell density and the metabolic potential of the environment. The regulation of gene expression in response to changes in cell density is called quorum sensing. Catalyzes the transformation of S-ribosylhomocysteine (RHC) to homocysteine (HC) and 4,5-dihydroxy-2,3-pentadione (DPD) (By similarity); Belongs to the LuxS family. (171 aa)
pyrGCTP synthetase; Catalyzes the ATP-dependent amination of UTP to CTP with either L-glutamine or ammonia as the source of nitrogen. Regulates intracellular CTP levels through interactions with the four ribonucleotide triphosphates. (545 aa)
barASensory histidine kinase; Similar to E. coli sensor-regulator, activates OmpR by phophorylation (AAC75828.1); Blastp hit to AAC75828.1 (918 aa), 90% identity in aa 1 - 918. (918 aa)
recCExonuclease V, subunit; A helicase/nuclease that prepares dsDNA breaks (DSB) for recombinational DNA repair. Binds to DSBs and unwinds DNA via a highly rapid and processive ATP-dependent bidirectional helicase activity. Unwinds dsDNA until it encounters a Chi (crossover hotspot instigator) sequence from the 3' direction. Cuts ssDNA a few nucleotides 3' to the Chi site. The properties and activities of the enzyme are changed at Chi. The Chi-altered holoenzyme produces a long 3'-ssDNA overhang and facilitates RecA-binding to the ssDNA for homologous DNA recombination and repair. Holoenzy [...] (1123 aa)
pgkSimilar to E. coli phosphoglycerate kinase (AAC75963.1); Blastp hit to AAC75963.1 (387 aa), 97% identity in aa 1 - 387. (387 aa)
ygiXPutative transcriptional regulator; Member of a two-component regulatory system QseB/QseC. Activates the flagella regulon by activating transcription of flhDC (By similarity). (219 aa)
ygiYPutative sensory histidine kinase in regulatory system; Member of a two-component regulatory system QseB/QseC. Activates the flagella regulon by activating transcription of FlhDC. May activate QseB by phosphorylation (By similarity). (449 aa)
rpmASimilar to E. coli 50S ribosomal subunit protein L27 (AAC76217.1); Blastp hit to AAC76217.1 (85 aa), 95% identity in aa 1 - 85; Belongs to the bacterial ribosomal protein bL27 family. (85 aa)
rpsISimilar 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)
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)
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; Belongs to the universal ribosomal protein uS11 family. (129 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. 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)
rpsE30S 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)
rplF50S 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)
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. 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)
rplN50S 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)
rplP50S 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)
rpsC30S 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)
rpsS30S ribosomal subunit protein S19; Protein S19 forms a complex with S13 that binds strongly to the 16S ribosomal RNA. (92 aa)
rplB50S 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)
rplD50S 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)
rplC50S 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)
rpsJ30S ribosomal subunit protein S10; Involved in the binding of tRNA to the ribosomes. Belongs to the universal ribosomal protein uS10 family. (103 aa)
fusAProtein chain elongation factor EF-G; Catalyzes the GTP-dependent ribosomal translocation step during translation elongation. During this step, the ribosome changes from the pre-translocational (PRE) to the post-translocational (POST) state as the newly formed A-site-bound peptidyl-tRNA and P-site-bound deacylated tRNA move to the P and E sites, respectively. Catalyzes the coordinated movement of the two tRNA molecules, the mRNA and conformational changes in the ribosome (By similarity); Belongs to the TRAFAC class translation factor GTPase superfamily. Classic translation factor GTPas [...] (704 aa)
rpsL30S ribosomal subunit protein S12; With S4 and S5 plays an important role in translational accuracy. (124 aa)
envZSensory histidine kinase in two-component regulatory system with OmpR; Member of the two-component regulatory system EnvZ/OmpR involved in osmoregulation (particularly of genes ompF and ompC) as well as other genes (By similarity). EnvZ functions as a membrane- associated protein kinase that phosphorylates OmpR in response to environmental signals; at low osmolarity OmpR activates ompF transcription, while at high osmolarity it represses ompF and activates ompC transcription (By similarity). (450 aa)
ompRResponse regulator in two-component regulatory system with EnvZ; Member of the two-component regulatory system EnvZ/OmpR involved in osmoregulation (particularly of genes ompF and ompC) as well as other genes (By similarity). Plays a central role in both acid and osmotic stress responses. Binds to the promoter of both ompC and ompF; at low osmolarity it activates ompF transcription, while at high osmolarity it represses ompF and activates ompC transcription (By similarity). (239 aa)
cspAMajor 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)
mgtBMg2+ transport protein; Mediates magnesium influx to the cytosol. Belongs to the cation transport ATPase (P-type) (TC 3.A.3) family. Type IIIB subfamily. (908 aa)
mgtCMg2+ transport protein; Virulence factor required for growth in low Mg(2+) medium and for intramacrophage survival. May be involved in regulating membrane potential by activating Na(+)/K(+)-ATPase. Belongs to the MgtC/SapB family. (231 aa)
dnaADNA replication initiator protein; Plays an important role in the initiation and regulation of chromosomal replication. Binds to the origin of replication; it binds specifically double-stranded DNA at a 9 bp consensus (dnaA box): 5'- TTATC[CA]A[CA]A-3'. DnaA binds to ATP and to acidic phospholipids. DnaA can inhibit its own gene expression as well as that of other genes (By similarity). (466 aa)
rplK50 S ribosomal subunit protein L11; Forms part of the ribosomal stalk which helps the ribosome interact with GTP-bound translation factors. (142 aa)
rplA50S 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)
rplL50S 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)
mopBChaperone Hsp10; Binds to Cpn60 in the presence of Mg-ATP and suppresses the ATPase activity of the latter. (97 aa)
mopAChaperone Hsp60 with peptide-dependent ATPase activity; Prevents misfolding and promotes the refolding and proper assembly of unfolded polypeptides generated under stress conditions. (548 aa)
Your Current Organism:
Salmonella enterica Typhimurium
NCBI taxonomy Id: 99287
Other names: S. enterica subsp. enterica serovar Typhimurium str. LT2, Salmonella enterica subsp. enterica serovar Typhimurium LT2, Salmonella enterica subsp. enterica serovar Typhimurium str. LT2, Salmonella enterica subsp. enterica serovar Typhimurium strain LT2, Salmonella enterica subsp. enterica serovar Typhimurium strain LT2-LTL2, Salmonella typhimurium LT2
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