Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

T - Signal transduction mechanisms

Download

Stats

COG
definitions
Organims Proteins Median Protein
Length
Genes
225 1,304 236,941 349.0 202
Organism Protein COG Cat Annotation
973 1464 COG0248 T F Exopolyphosphatase/pppGpp-phosphohydrolase
517 667 COG0271 K T DNA-binding global transcriptional regulator BolA, affects cell shape, cell division and biofilm formation
1133 1849 COG0317 K T (p)ppGpp synthase/hydrolase, HD superfamily
924 1834 COG0347 T E Nitrogen regulatory protein PII
1074 2242 COG0394 T Protein-tyrosine-phosphatase
708 1597 COG0464 D T M AAA+-type ATPase, SpoVK/Ycf46/Vps4 family
306 850 COG0467 T RecA-superfamily ATPase, KaiC/GvpD/RAD55 family
153 158 COG0478 T RIO-like serine/threonine protein kinase fused to N-terminal HTH domain
284 326 COG0490 T P K+/H+ antiporter KhtSTU, c-di-AMP-binding regulatory subunit KhtT, contains RCK_C (TrkA_C) domain
897 8872 COG0515 T Serine/threonine protein kinase
968 1783 COG0517 T CBS domain
1106 2991 COG0569 T P Trk/Ktr K+ transport system regulatory component TrkA/KtrA/KtrC, RCK domain
1079 5709 COG0589 T Nucleotide-binding universal stress protein, UspA family
682 1013 COG0618 T F nanoRNase/pAp phosphatase, hydrolyzes c-di-AMP and oligoRNAs
777 1682 COG0631 T Serine/threonine protein phosphatase PrpC
191 192 COG0639 T Diadenosine tetraphosphatase ApaH/serine/threonine protein phosphatase, PP2A family
1184 18976 COG0642 T Signal transduction histidine kinase
705 1559 COG0643 T Chemotaxis protein histidine kinase CheA
937 1511 COG0661 T H Predicted protein kinase regulating ubiquinone biosynthesis, AarF/ABC1/UbiB family
1064 6706 COG0664 T cAMP-binding domain of CRP or a regulatory subunit of cAMP-dependent protein kinases
675 2106 COG0666 T Ankyrin repeat
1181 15210 COG0745 K T DNA-binding response regulator, OmpR family, contains REC and winged-helix (wHTH) domain
1008 13538 COG0784 T CheY-like REC (receiver) domain, includes chemotaxis protein CheY and sporulation regulator Spo0F
990 6092 COG0834 T E ABC-type amino acid transport/signal transduction system, periplasmic component/domain
706 2311 COG0835 T Chemotaxis signal transduction protein CheW
768 9480 COG0840 T Methyl-accepting chemotaxis protein (MCP)
377 526 COG1073 T Fermentation-respiration switch esterase FrsA, DUF1100 family
1092 1093 COG1217 T Predicted membrane GTPase TypA/BipA involved in stress response
122 190 COG1221 K T Transcriptional regulators containing an AAA-type ATPase domain and a DNA-binding domain
725 1561 COG1352 T Methylase of chemotaxis methyl-accepting proteins
619 2462 COG1366 T Anti-anti-sigma regulatory factor (antagonist of anti-sigma factor)
843 1922 COG1409 T 3',5'-cyclic AMP phosphodiesterase CpdA
216 237 COG1437 T R Adenylate cyclase class IV, CYTH domain (includes archaeal enzymes of unknown function)
325 327 COG1480 T Cyclic di-AMP-specific phosphodiesterase PgpH, HD superfamily
444 459 COG1489 T G DNA-binding protein, stimulates sugar fermentation
546 627 COG1493 T Serine kinase of the HPr protein, regulates carbohydrate metabolism
595 969 COG1524 T c-di-AMP phosphodiesterase AtaC or nucleotide pyrophosphatase, AlkP superfamily
435 557 COG1551 T sRNA-binding carbon storage regulator CsrA
165 165 COG1623 T c-di-AMP synthetase DisA, contains DisA_N, linker and DNA-binding domains
520 557 COG1624 T c-di-AMP synthetase, contains DisA_N domain
273 1081 COG1639 T HD-like signal output (HDOD) domain, no enzymatic activity
809 813 COG1660 T RNase adaptor protein RapZ for GlmZ sRNA degradation, contains a P-loop ATPase domain
574 572 COG1666 T Cyclic di-GMP-binding protein YajQ, UPF0234 family
378 383 COG1692 T 2',3'- and 3',5'-cNMP phosphodiesterase YmdB, calcineurin family
1044 1118 COG1702 T Phosphate starvation-inducible protein PhoH, predicted ATPase
257 269 COG1713 T R Diadenosine tetraphosphatase YqeK or a related HD superfamily phosphohydrolase
557 2759 COG1716 T Forkhead associated (FHA) domain, binds pSer, pThr, pTyr
277 298 COG1718 T Serine/threonine-protein kinase RIO1
583 1131 COG1744 T Lipoprotein Med, regulator of KinD/Spo0A, PBP1-ABC superfamily, includes NupN
67 72 COG1751 T G Ligand-binding C-terminal domain of pyruvate kinase, DUF1867
715 1720 COG1762 T G Phosphotransferase system mannitol/fructose-specific IIA domain (Ntr-type)
418 428 COG1774 T Cell fate regulator YaaT, PSP1 superfamily (controls sporulation, competence, biofilm development)
307 532 COG1776 T Phosphoaspartate phosphatase CheC, specific for CheY-P
533 565 COG1806 T Regulator of PEP synthase PpsR, kinase-PPPase family (combines ADP:protein kinase and phosphorylase activities)
544 747 COG1842 K T Phage shock protein A
266 274 COG1854 T S-ribosylhomocysteine lyase LuxS, autoinducer biosynthesis
413 508 COG1871 T Chemotaxis receptor (MCP) glutamine deamidase CheD
612 648 COG1923 T sRNA-binding regulator protein Hfq
854 1475 COG1925 T G HPr or related phosphotransfer protein
522 605 COG1956 V T GAF domain-containing protein, putative methionine-R-sulfoxide reductase
985 1628 COG1974 K T SOS-response transcriptional repressor LexA (RecA-mediated autopeptidase)
512 805 COG1983 K T Phage shock protein PspC (stress-responsive transcriptional regulator)
247 274 COG1993 T PII-like signaling protein
200 554 COG2018 T Predicted regulator of Ras-like GTPase activity, Roadblock/LC7/MglB family
799 992 COG2062 T Phosphohistidine phosphatase SixA
81 82 COG2112 T Predicted Ser/Thr protein kinase
570 2361 COG2114 T Adenylate cyclase, class 3
554 1551 COG2172 T Anti-sigma regulatory factor (Ser/Thr protein kinase)
209 240 COG2184 T Fido, protein-threonine AMPylation domain
1052 10240 COG2197 K T DNA-binding response regulator, NarL/FixJ family, contains REC and HTH domains
566 1657 COG2198 T HPt (histidine-containing phosphotransfer) domain
816 9665 COG2199 T GGDEF domain, diguanylate cyclase (c-di-GMP synthetase) or its enzymatically inactive variants
720 4128 COG2200 T EAL domain, c-di-GMP-specific phosphodiesterase class I (or its enzymatically inactive variant)
735 1612 COG2201 T Chemotaxis response regulator CheB, contains REC and protein-glutamate methylesterase domains
967 13407 COG2202 T PAS domain
862 5079 COG2203 T GAF domain
890 6790 COG2204 T DNA-binding transcriptional response regulator, NtrC family, contains REC, AAA-type ATPase, and a Fis-type DNA-binding domains
991 4087 COG2205 T K+-sensing histidine kinase KdpD
540 2060 COG2206 T HD-GYP domain, c-di-GMP phosphodiesterase class II (or its inactivated variant)
586 2063 COG2208 K T Phosphoserine phosphatase RsbU, regulator of sigma subunit
127 531 COG2310 T Stress response protein SCP2
693 1171 COG2334 T Ser/Thr protein kinase RdoA involved in Cpx stress response, MazF antagonist
282 352 COG2339 T Membrane proteinase PrsW, cleaves anti-sigma factor RsiW, M82 family
306 408 COG2357 T F ppGpp synthetase catalytic domain (RelA/SpoT-type nucleotidyltranferase)
340 490 COG2365 T Protein tyrosine/serine phosphatase Oca4
139 158 COG2404 J T Oligoribonuclease NrnA/c-di-AMP phosphodiesterase DhhP, DHH superfamily
325 393 COG2453 T Protein-tyrosine phosphatase
43 80 COG2469 T Archaeal chemotaxis protein CheF
263 618 COG2703 T Hemerythrin
333 386 COG2766 T Predicted Ser/Thr protein kinase
512 979 COG2770 T HAMP domain
323 360 COG2808 T Predicted FMN-binding regulatory protein PaiB
579 597 COG2844 T O UTP:GlnB (protein PII) uridylyltransferase
983 2401 COG2905 T Signal-transduction protein containing cAMP-binding, CBS, and nucleotidyltransferase domains
291 302 COG2912 T Regulator of sirC expression, contains transglutaminase-like and TPR domains
195 195 COG2915 T X Regulator of phage lambda lysogenization HflD, binds to CII and stimulates its degradation
361 357 COG2921 T Putative lipoate-binding regulatory protein, UPF0250 family
270 647 COG2972 T Sensor histidine kinase YesM
383 401 COG2976 T Putative negative regulator of RcsB-dependent stress response, UPF0070 family
250 252 COG3026 T RseB, negative regulator of sigma E activity
223 223 COG3045 T Periplasmic catabolite regulation protein CreA (function unknown)
130 135 COG3072 T Adenylate cyclase, class I
247 246 COG3073 T RseA, negative regulator of sigma E activity
139 164 COG3083 T M Periplasmic protein PbgA/YejM, regulator of the LPS biosynthesis, AlkP superfamily
283 309 COG3086 T RseC, positive regulator of sigma E activity
197 199 COG3106 T Ras-like GTP-binding stress-induced protein YcjX, DUF463 family
172 187 COG3109 T sRNA-binding protein ProQ
250 311 COG3143 T N Phosphoaspartate phosphatase CheZ, dephosphorylates CheY~P
416 688 COG3193 T Formaldehyde-binding sensor protein EfgA, GlcG/HbpS family
240 319 COG3213 T Nitric oxide response protein NnrS
277 305 COG3228 T Mlc titration factor MtfA, regulates ptsG expression
502 1646 COG3275 T Sensor histidine kinase, LytS/YehU family
704 2799 COG3279 K T DNA-binding response regulator, LytR/AlgR family
258 363 COG3287 T FIST domain protein MJ1623, contains FIST_N and FIST_C domains
357 710 COG3290 T Sensor histidine kinase DipB regulating citrate/malate metabolism
247 1165 COG3292 T Periplasmic ligand-binding sensor domain
219 309 COG3300 T MHYT domain, NO-binding membrane sensor
150 212 COG3322 T Extracellular (periplasmic) sensor domain CHASE (specificity unknown)
206 220 COG3412 T Phosphotransferase subunit DhaM of the dihydroxyacetone kinase DhaKLM complex, contains PTS-EIIA, HPr, and PEP-utilizing domains
213 378 COG3434 T c-di-GMP phosphodiesterase YuxH/PdeH, contains EAL and HDOD domains
502 1300 COG3437 T Response regulator c-di-GMP phosphodiesterase, RpfG family, contains REC and HD-GYP domains
228 335 COG3447 T Integral membrane sensor domain MASE1
684 1251 COG3448 T CBS-domain-containing membrane protein
156 182 COG3452 T Extracellular (periplasmic) sensor domain CHASE (specificity unknown)
152 182 COG3456 T U Predicted component of the type VI protein secretion system, contains a FHA domain
369 429 COG3476 T Tryptophan-rich sensory protein TspO/CrtK (mitochondrial benzodiazepine receptor homolog)
218 226 COG3480 T Predicted secreted protein YlbL, contains PDZ domain
401 779 COG3550 T Serine/threonine protein kinase HipA, toxin component of the HipAB toxin-antitoxin module
92 94 COG3602 T ACT domain, ACT-3 family
85 88 COG3603 T ACT domain, ACT-7 family
484 1070 COG3604 K T FhlA-type transcriptional regulator, contains GAF, AAA-type ATPase, and DNA-binding Fis domains
400 471 COG3605 T Signal transduction protein containing GAF and PtsI domains
223 351 COG3614 T Extracytoplasmic sensor domain CHASE1 (specificity unknown)
104 133 COG3641 T Membrane regulatory protein PfoR, PTS_EIIC_2 domain (does not regulate perfringolysin expression)
163 240 COG3679 T Cell fate regulator YlbF, YheA/YmcA/DUF963 family (controls sporulation, competence, biofilm development)
658 2883 COG3706 K T Two-component response regulator, PleD family, consists of two REC domains and a diguanylate cyclase (GGDEF) domain
516 865 COG3707 K T Two-component response regulator, AmiR/NasT family, consists of REC and RNA-binding antiterminator (ANTAR) domains
289 1785 COG3712 T P Periplasmic ferric-dicitrate binding protein FecR, regulates iron transport
207 283 COG3806 T Anti-sigma factor ChrR, cupin superfamily
572 1801 COG3829 K T RocR-type transcriptional regulator, contains PAS, AAA-type ATPase, and DNA-binding Fis domains
327 336 COG3830 T ACT domain, binds amino acids and other small ligands
273 457 COG3835 K T Sugar diacid utilization regulator CdaR
222 231 COG3848 T Phosphohistidine swiveling domain of PEP-utilizing enzymes
419 710 COG3850 T Signal transduction histidine kinase NarQ, nitrate/nitrite-specific
70 91 COG3851 T Signal transduction histidine kinase UhpB, glucose-6-phosphate specific
550 823 COG3852 T Signal transduction histidine kinase NtrB, nitrogen specific
130 155 COG3870 T Cyclic di-AMP receptor DarA/PstA
143 143 COG3887 T Cyclic di-AMP phosphodiesterase GdpP, contains GGDEF-like and DHH domains
120 134 COG3913 T U Regulator of T6SS expression TagF, TagF/ImpM/SciT family (unrelated to teichoic acid polymerase TagF of B.subtilis, COG1887)
189 296 COG3916 T N-acyl-homoserine lactone synthase LasI (autoinducer biosynthesis)
489 1479 COG3920 T Two-component sensor histidine kinase, HisKA and HATPase domains
54 54 COG3925 T G N-terminal domain of the PTS fructose-specific IIB component
159 197 COG3937 T Q Polyhydroxyalkanoate synthesis regulator phasin
146 200 COG3947 K T Two-component response regulator, SAPR family, consists of REC, wHTH and BTAD domains
657 4202 COG4191 T Signal transduction histidine kinase regulating C4-dicarboxylate transport system
36 38 COG4192 T Signal transduction histidine kinase regulating phosphoglycerate transport system
254 620 COG4219 T Signal transducer regulating beta-lactamase production, contains metallopeptidase domain
76 130 COG4250 T DICT sensory domain found in diguanylate cyclases and two-component systems
438 1827 COG4251 T Bacteriophytochrome (light-regulated signal transduction histidine kinase)
302 648 COG4252 T Extracytoplasmic sensor domain CHASE2 (specificity unknown)
124 127 COG4398 T Small ligand-binding sensory domain FIST
234 266 COG4464 T Tyrosine-protein phosphatase YwqE
61 103 COG4512 K T Accessory gene regulator protein AgrB
61 63 COG4550 T Cell fate regulator YmcA, YheA/YmcA/DUF963 family (controls sporulation, competence, biofilm development)
283 602 COG4564 T Signal transduction histidine kinase
407 664 COG4565 K T DNA-binding response regulator DpiB of citrate/malate metabolism
364 1003 COG4566 K T DNA-binding response regulator, FixJ family, consists of REC and HTH domains
315 409 COG4567 K T DNA-binding response regulator, ActR/RegA family, consists of REC and Fis-type HTH domains
160 160 COG4579 T Isocitrate dehydrogenase kinase/phosphatase
728 4585 COG4585 T Signal transduction histidine kinase ComP
379 576 COG4623 T M Membrane-bound lytic murein transglycosylase MltF
82 85 COG4650 K T Sigma54-dependent transcription regulator containing an AAA-type ATPase domain and a DNA-binding domain
523 1370 COG4753 K T Two-component response regulator, YesN/AraC family, consists of REC and AraC-type DNA-binding domains
84 95 COG4758 T Membrane protein LiaF, inhibitor of the LiaRS two-component envelope stress sensory system
17 32 COG4831 T Roadblock/LC7 domain
144 146 COG4832 V T Cyclopropanoid cyclopropyl hydrolase, GyrI-like domain
85 85 COG4853 T YycI protein, regulator of the WalKR two-component signal transduction system
259 263 COG4856 T Cyclic di-AMP synthase regulator CdaR, YbbR domain
94 120 COG4862 K T N Negative regulator MecA of genetic competence, sporulation and motility
79 79 COG4863 T YycH protein, regulator of the WalKR two-component signal transduction system
127 217 COG4936 T Ligand-binding sensor domain
85 126 COG4943 T Redox-sensing c-di-GMP phosphodiesterase, contains CSS-motif and EAL domains
49 63 COG4945 T G Carbohydrate-binding DOMON domain
188 220 COG4960 T O Flp pilus assembly protein, peptidase CpaA
267 421 COG4978 T GyrI-like small molecule binding domain
60 60 COG4999 T Uncharacterized domain of signal transduction histidine kinase BarA
691 1412 COG5000 T Signal transduction histidine kinase NtrY involved in nitrogen fixation and metabolism regulation
590 3416 COG5001 T Cyclic di-GMP metabolism protein, combines GGDEF and EAL domains with a 6TM membrane domain
1055 3361 COG5002 T Sensor histidine kinase WalK
358 359 COG5007 T Acid stress protein IbaG/YrbA, BolA-like family
109 120 COG5018 T 3'-5' exonuclease KapD, inhibitor of KinA-controlled sporulation
99 153 COG5126 T Ca2+-binding protein, EF-hand superfamily
63 63 COG5212 T cAMP phosphodiesterase
366 710 COG5278 T Extracytoplasmic sensor domain CHASE3 (specificity unknown)
244 290 COG5343 T Anti-sigma-K factor RskA
136 136 COG5385 T Histidine phosphotransfer protein ChpT, HPt domain
285 291 COG5394 T Q Polyhydroxyalkanoate (PHA) synthesis regulator protein, binds DNA and PHA
26 33 COG5440 T Global stress regulator YbjN, DUF2299 family
67 105 COG5524 T C Bacteriorhodopsin
13 18 COG5599 T Protein tyrosine phosphatase
182 514 COG5616 T TolB amino-terminal domain (function unknown)
185 612 COG5635 T Predicted NTPase, NACHT family domain
73 86 COG5660 T Anti-sigma-YlaC factor YlaD, contains Zn-finger domain
33 125 COG5750 T Chlorophyll biosynthesis regulator GUN4/Ycf53 domain
36 36 COG5751 T Photosynthetic regulator, contains GUN4/Ycf53 domain and N-terminal all-alpha domain
22 40 COG5752 T Signaling protein combining a Ser/Thr protein kinase domain and the GUN4/Ycf53 porphyrin-binding domain
40 40 COG5764 T C Cyanobacterial/chloroplast FeS cluster protein Ycf34, regulator of photosynthetic electron transport, PF10718 domain
38 38 COG5768 T C Cyanobacterial response regulator with REC-Ycf55 domain architecture
39 39 COG5780 T C Acclimation of photosynthesis to environment protein APE1, affects chlorophyll fluorescence, DUF2854 (PF11016) domain
39 39 COG5788 T C Cyanobacterial/chloroplast protein SipA, regulator of sensor kinase NblS (Hik33), DUF3148 (PF11347) family
22 31 COG5792 T C Fusion of CP12 with N-terminal CBS domain pair
115 128 COG5801 D T Stage 0 sporulation initiation regulator Spo0A (response regulator, REC-HTH domains)
61 62 COG5802 D T Stage 0 sporulation initiation phosphotransferase Spo0B
74 77 COG5803 D T Stage 0 sporulation initiation response regulator Spo0F
76 197 COG5804 D T Stage 0 sporulation regulatory phosphatase Spo0E
20 20 COG5805 D T Sporulation sensor histidine kinase A (Stage II sporulation protein SpoIIF/SpoIIJ)
19 40 COG5806 D T Sporulation sensor histidine kinase B
16 16 COG5807 D T Sporulation sensor histidine kinase C
11 12 COG5808 D T Sporulation sensor histidine kinase D
30 41 COG5809 D T Sporulation sensor histidine kinase E
35 35 COG5810 D T Sporulation protein KbaA, activator of histidine kinase KinB
105 107 COG5815 D T Stage II sporulation protein SpoIIAA (antagonist of anti-sigma F factor)
85 89 COG5848 D T SigmaK-processing regulatory protein BofA (Bypass-of-forespore protein A)
38 38 COG5849 D T SigmaK checkpoint regulator BofC (Bypass-of-forespore protein C)
40 40 COG5867 D T Anti-sigma-F factor Fin