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hepA hepA hilA hilA sicA sicA invF invF ygiX ygiX leuO leuO fis fis rhaS rhaS uhpA uhpA glnG glnG metR metR ilvY ilvY STM3678 STM3678 cspA cspA malT malT ompR ompR crp crp lrp lrp fnr fnr marA marA slyA slyA STM0052 STM0052 dpiA dpiA mntR mntR STM4423 STM4423 tyrR tyrR ybbS ybbS cueR cueR crl crl fruR fruR dcuR dcuR basR basR soxR soxR cysB cysB fadR fadR soxS soxS tctD tctD csrA csrA STM1082 STM1082 fhlA fhlA hilC hilC hydG hydG yabN yabN ttrR ttrR rhaR rhaR cspB cspB phoP phoP pocR pocR cspH cspH yehV yehV ada ada pgtA pgtA eutR eutR yfhP yfhP cspC cspC flhC flhC flhD flhD araC araC
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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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hepARNA polymerase associated protein; Transcription regulator that activates transcription by stimulating RNA polymerase (RNAP) recycling in case of stress conditions such as supercoiled DNA or high salt concentrations. Probably acts by releasing the RNAP, when it is trapped or immobilized on tightly supercoiled DNA. Does not activate transcription on linear DNA. Probably not involved in DNA repair; Belongs to the SNF2/RAD54 helicase family. RapA subfamily. (968 aa)
hilAInvasion genes transcription activator; The main transcriptional regulator of the Salmonella pathogenicity island 1 (SPI1) gene expression. Activates the expression of invasion genes by a direct action at their promoters and also indirectly by increasing the level of InvF. Also binds upstream of prgH and directly activates the expression of prgHIJK operon. (553 aa)
sicASurface presentation of antigens; Type III secretion-associated chaperone required for SipB and SipC stabilization. Prevents premature association of SipB with SipC, which may lead to their targeting for degradation. Along with InvF, required for transcription activation of sigDE (sopB pipC), sicAsipBCDA, and sopE. (165 aa)
invFInvasion protein; Transcriptional regulator required for the expression of several genes encoding type III secretion system SPI1 effector proteins. The interaction with SicA is necessary for the activation of sigDE (sopB pipC), sicAsipBCDA, and sopE. (216 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)
leuOPutative LysR family transcriptional regulator; Probable activator protein in leuabcd operon. (SW:LEUO_SALTY); Belongs to the LysR transcriptional regulatory family. (314 aa)
fisSite-specific DNA inversion stimulation factor; Activates ribosomal RNA transcription. Plays a direct role in upstream activation of rRNA promoters; Belongs to the transcriptional regulatory Fis family. (98 aa)
rhaSPositive regulator for rhaBAD operon; Activates expression of the rhaBAD and rhaT operons. (278 aa)
uhpAResponse regulator (repressor) in two-component regulatory system wtih UhpB; Part of the UhpABC signaling cascade that controls the expression of the hexose phosphate transporter UhpT. Activates the transcription of the uhpT gene. Acts by binding specifically to the uhpT promoter region. (196 aa)
glnGEBP family response regulator in two-component regulatory system with GlnL; Member of the two-component regulatory system NtrB/NtrC, which controls expression of the nitrogen-regulated (ntr) genes in response to nitrogen limitation. Phosphorylated NtrC binds directly to DNA and stimulates the formation of open promoter-sigma54-RNA polymerase complexes. (469 aa)
metRRegulator for metE and metH; Control of the last step in methionine biosynthesis; MetR is a positive activator of the metA, metE and metH genes. It is also a negative regulator of its own expression; Belongs to the LysR transcriptional regulatory family. (317 aa)
ilvYPositive LysR family regulator for ilvC; This protein activates the transcription of the IlvC gene in the presence of acetolactate or acetohydroxybutyrate. IlvY is also a negative regulator of its own expression; Belongs to the LysR transcriptional regulatory family. (295 aa)
STM3678araC family; similar to E. coli putative ARAC-type regulatory protein (AAC76936.1); Blastp hit to AAC76936.1 (283 aa), 25% identity in aa 112 - 274. (271 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)
malTTranscriptional activator of the mal genes; Positively regulates the transcription of the maltose regulon whose gene products are responsible for uptake and catabolism of malto- oligosaccharides. Specifically binds to the promoter region of its target genes, recognizing a short DNA motif called the MalT box. (901 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)
crpCatabolite activator protein (CAP); A global transcription regulator. Complexes with cyclic AMP (cAMP) which allosterically activates DNA binding to regulate transcription. It can act as an activator, repressor, coactivator or corepressor. Induces a severe bend in DNA. Acts as a negative regulator of its own synthesis as well as for adenylate cyclase (cyaA), which generates cAMP. Plays a major role in carbon catabolite repression (CCR) (By similarity). (210 aa)
lrpRegulator for lrp regulon and high-affinity branched-chain amino acid transport system; Mediates a global response to leucine. Exogenous leucine affects the expression of a number of different operons; lrp mediates this effect for at least some of these operons. For example it is regulator of the branched-chain amino acid transport genes. (164 aa)
fnrTranscriptional regulator; Global transcription factor that controls the expression of over 100 target genes in response to anoxia. It facilitates the adaptation to anaerobic growth conditions by regulating the expression of gene products that are involved in anaerobic energy metabolism. When the terminal electron acceptor, O(2), is no longer available, it represses the synthesis of enzymes involved in aerobic respiration and increases the synthesis of enzymes required for anaerobic respiration (By similarity). (264 aa)
marAAraC/XylS family transcriptional activator of defense systems; May be a transcriptional activator of genes involved in the multiple antibiotic resistance (Mar) phenotype. It can also activate genes such as sodA, zwf and micF. (144 aa)
slyAMarR family transcriptional regulator for hemolysin; Transcription regulator that can specifically activate or repress expression of target genes. Required for virulence and survival in the macrophage environment. Probably activates expression of ispA, xseB genes, and of omp operon. (146 aa)
STM0052Putative transcription regulator sensor for citrate; Similar to E. coli sequence similarity to Shigella regulator (AAC73721.1); Blastp hit to AAC73721.1 (226 aa), 47% identity in aa 5 - 223. (228 aa)
dpiAResponse regulator in two-component regulatory system with DpiB; Transcriptional regulation of cit operon (citrate fermentation) genes and of plasmid inheritance genes (OmpR family); similar to E. coli sequence similarity to Shigella regulator (AAC73721.1); Blastp hit to AAC73721.1 (226 aa), 84% identity in aa 1 - 226. (226 aa)
mntRPutative Mn-dependent transcriptional regulator; In the presence of manganese, represses expression of mntH and mntS. Up-regulates expression of mntP (By similarity). Belongs to the DtxR/MntR family. (157 aa)
STM4423Similar to E. coli putative ARAC-type regulatory protein (AAC74766.1); Blastp hit to AAC74766.1 (303 aa), 27% identity in aa 38 - 283. (274 aa)
tyrRTranscriptional regulatory protein TyrR; Involved in transcriptional regulation of aromatic amino acid biosynthesis and transport. Modulates the expression of at least 8 unlinked operons. Seven of these operons are regulated in response to changes in the concentration of the three aromatic amino acids (phenylalanine, tyrosine and tryptophan). These amino acids are suggested to act as co-effectors which bind to the TyrR protein to form an active regulatory protein. In most cases TyrR causes negative regulation, but positive effects on the tyrP gene have been observed at high phenylalani [...] (513 aa)
ybbSPutative LysR family transcriptional regulator; Positive regulator essential for the expression of allD operon. Binds to the allD promoter (By similarity). (308 aa)
cueRPutative heavy metal transcriptional repressor (MerR family); Regulates the transcription of the copA and cuiD (cueO) genes. Detects cytoplasmic copper stress and activates transcription in response to increasing copper concentrations. (138 aa)
crlTranscriptional regulator of cryptic csgA gene for curli surface fibers; Binds to the sigma-S subunit of RNA polymerase, activating expression of sigma-S-regulated genes, such as the csgBAC operon encoding the subunits of curli proteins, and BcsA, involved in cellulose biosynthesis. (133 aa)
fruRTranscriptional repressor of fru operon and others; Global transcriptional regulator, which plays an important role in the regulation of carbon metabolism. (334 aa)
dcuRResponse regulator in two-component regulatory system with DcuS; Regulates anaerobic fumarate respiration; similar to E. coli putative 2-component transcriptional regulator (AAC77085.1); Blastp hit to AAC77085.1 (239 aa), 88% identity in aa 1 - 239. (239 aa)
basRResponse regulator in two-component regulatory system with BasS; Member of the two-component regulatory system BasS/BasR. BasR induces the transcription of the ugd, ais, arnBCADTEF and eptA-basRS loci, all involved in resistance to polymyxin. Represses the transcription of pmrD. Plays a role in the adaptation of the organism to the host environment, in particular to neutrophils, and therefore it plays a role in virulence as well. (222 aa)
soxRRedox-sensing transcriptional activator SoxR; Activates the transcription of the soxS gene which itself controls the superoxide response regulon. SoxR contains a 2Fe-2S iron- sulfur cluster that may act as a redox sensor system that recognizes superoxide. The variable redox state of the Fe-S cluster is employed in vivo to modulate the transcriptional activity of SoxR in response to specific types of oxidative stress (By similarity). (152 aa)
cysBTranscriptional regulator for cysteine regulon; This protein is a positive regulator of gene expression for the cysteine regulon, a system of 10 or more loci involved in the biosynthesis of L-cysteine from inorganic sulfate. The inducer for CysB is N-acetylserine. CysB inhibits its own transcription. (324 aa)
fadRNegative regulator of fad regulon; Multifunctional regulator of fatty acid metabolism. Represses transcription of at least eight genes required for fatty acid transport and beta-oxidation including fadA, fadB, fadD, fadL and fadE. Activates transcription of at least three genes required for unsaturated fatty acid biosynthesis: fabA, fabB and iclR, the gene encoding the transcriptional regulator of the aceBAK operon encoding the glyoxylate shunt enzymes. Binding of FadR is specifically inhibited by long chain fatty acyl-CoA compounds (By similarity). (239 aa)
soxSTranscriptional activator of superoxide response regulon; Transcriptional activator of the superoxide response regulon of E.coli that includes at least 10 genes such as sodA, nfo, zwf and micF. Binds the DNA sequence 5'-GCACN(7)CAA-3'. It also facilitates the subsequent binding of RNA polymerase to the micF and the nfo promoters (By similarity). (107 aa)
tctDTricarboxylic transport regulatory protein; Transcriptional activator of the tctI tricarboxylate transport system operon. (224 aa)
csrACarbon storage regulator; A key translational regulator that binds mRNA to regulate translation initiation and/or mRNA stability. Mediates global changes in gene expression, shifting from rapid growth to stress survival by linking envelope stress, the stringent response and the catabolite repression systems. Usually binds in the 5'-UTR; binding at or near the Shine-Dalgarno sequence prevents ribosome-binding, repressing translation, binding elsewhere in the 5'-UTR can activate translation and/or stabilize the mRNA. Its function is antagonized by small RNA(s). (61 aa)
STM1082Similar to E. coli putative ARAC-type regulatory protein (AAC73647.1); Blastp hit to AAC73647.1 (265 aa), 33% identity in aa 8 - 260. (259 aa)
fhlAFormate hydrogen-lyase transcriptional activator for fdhF, hyc and hyp operons; Required for induction of expression of the formate dehydrogenase H and hydrogenase-3 structural genes. (692 aa)
hilCaraC family bacterial regulatory helix-turn-helix protein; Positive regulator of the expression of the invasion- associated type III secretion system encoded within SPI-1 (pathogenicity island 1). (295 aa)
hydGResponse regulator in two-component reguatory system with HydH; Member of the two-component regulatory system ZraS/ZraR. When activated by ZraS it acts in conjunction with sigma-54 to regulate the expression of zraP. Positively autoregulates the expression of the zraSR operon (By similarity). (441 aa)
yabNPutative periplasmic binding protein of transport system; Activates the small RNA gene sgrS under glucose-phosphate stress conditions as well as yfdZ. Represses its own transcription under both stress and non-stress conditions. Might act as a sensor of the intracellular accumulation of phosphoglucose by binding these molecules in its C-terminal solute-binding domain. (552 aa)
ttrRTetrathionate reductase complex: response regulator; Member of the two-component regulatory system TtrR/TtrS, which is required for synthesis of tetrathionate reductase. Positively regulates transcription of the ttrBCA operon. During mice infection, the ability to use tetrathionate as an electron acceptor is a growth advantage for S.typhimurium over the competing microbiota in the lumen of the inflamed gut. (206 aa)
rhaRPositive regulator for rhaRS operon; Activates expression of the rhaSR operon in response to L- rhamnose. (282 aa)
cspBPutative cold-shock protein; Similar to E. coli cold shock-like protein (AAC74625.1); Blastp hit to AAC74625.1 (70 aa), 84% identity in aa 1 - 70. (70 aa)
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)
pocRPropanediol utilization protein; Positive regulatory protein of pdu and cob operons. (303 aa)
cspHHomology with cold shock proteins; Cold shock-like protein CSPH. (SW:CSPH_SALTY). (70 aa)
yehVPutative transcriptional repressor (MerR family); Transcriptional activator of csgD, which is required for production of the curli (AgF). (243 aa)
adaO6-methylguanine-DNA methyltransferase; Involved in the cellular defense against the biological effects of O6-methylguanine (O6-MeG) and O4-methylthymine (O4-MeT) in DNA. Repairs the methylated nucleobase in DNA by stoichiometrically transferring the methyl group to a cysteine residue in the enzyme. This is a suicide reaction: the enzyme is irreversibly inactivated; In the C-terminal section; belongs to the MGMT family. (353 aa)
pgtAActivator protein; Member of the two-component regulatory system PgtB/PgtA that regulates the inducible phosphoglycerate transport system. When activated by PgtB it acts in conjunction with sigma-54 as a transcriptional activator. (415 aa)
eutRPutative regulator ethanolamine operon; Activates the transcription of the eut operon. Also positively regulates its own transcription. Probably binds ethanolamine and vitamin B12 as effectors. (350 aa)
yfhPHypothetical protein; Regulates the transcription of several operons and genes involved in the biogenesis of Fe-S clusters and Fe-S-containing proteins. (164 aa)
cspCCold shock protein; Multicopy suppresses mukB mutants, putative regulator; cold shock-like protein CSPC. (SW:CSPC_SALTY). (69 aa)
flhCRegulator of flagellar biosynthesis; Functions in complex with FlhD as a master transcriptional regulator that regulates transcription of several flagellar and non- flagellar operons by binding to their promoter region. Activates expression of class 2 flagellar genes, including fliA, which is a flagellum-specific sigma factor that turns on the class 3 genes. Also regulates genes whose products function in a variety of physiological pathways (Probable); Belongs to the FlhC family. (194 aa)
flhDRegulator of flagellar biosynthesis; Functions in complex with FlhC as a master transcriptional regulator that regulates transcription of several flagellar and non- flagellar operons by binding to their promoter region. Activates expression of class 2 flagellar genes, including fliA, which is a flagellum-specific sigma factor that turns on the class 3 genes. Also regulates genes whose products function in a variety of physiological pathways (Probable); Belongs to the FlhD family. (116 aa)
araCTranscriptional regulator (AraC/XylS family) for ara operon; Transcription factor that regulates the expression of several genes involved in the transport and metabolism of L-arabinose. (281 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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