| COG ID Link to COG |
Functional Description | Protein Count Link to protein list |
|---|---|---|
| COG5170 | CDC55 Serine/threonine protein phosphatase 2A, regulatory subunit [Signal transduction mechanisms] | 437 |
| COG0515 | SPS1 Serine/threonine protein kinase [General function prediction only / Signal transduction mechanisms / Transcription / DNA replication, recombination, and repair] | 300 |
| COG3642 | Mn2+-dependent serine/threonine protein kinase [Signal transduction mechanisms] | 225 |
| COG5126 | FRQ1 Ca2+-binding protein (EF-Hand superfamily) [Signal transduction mechanisms / Cytoskeleton / Cell division and chromosome partitioning / General function prediction only] | 212 |
| COG5238 | RNA1 Ran GTPase-activating protein (RanGAP) involved in mRNA processing and transport [Signal transduction mechanisms / RNA processing and modification] | 202 |
| COG0478 | RIO-like serine/threonine protein kinase fused to N-terminal HTH domain [Signal transduction mechanisms] | 202 |
| COG1718 | RIO1 Serine/threonine protein kinase involved in cell cycle control [Signal transduction mechanisms / Cell division and chromosome partitioning] | 182 |
| COG1217 | TypA Predicted membrane GTPase involved in stress response [Signal transduction mechanisms] | 155 |
| COG2112 | Predicted Ser/Thr protein kinase [Signal transduction mechanisms] | 153 |
| COG5432 | RAD18 RING-finger-containing E3 ubiquitin ligase [Signal transduction mechanisms] | 106 |
| COG1221 | PspF Transcriptional regulators containing an AAA-type ATPase domain and a DNA-binding domain [Transcription / Signal transduction mechanisms] | 97 |
| COG0467 | RAD55 RecA-superfamily ATPases implicated in signal transduction [Signal transduction mechanisms] | 96 |
| COG3829 | RocR Transcriptional regulator containing PAS, AAA-type ATPase, and DNA-binding domains [Transcription / Signal transduction mechanisms] | 93 |
| COG2204 | AtoC Response regulator containing CheY-like receiver, AAA-type ATPase, and DNA-binding domains [Signal transduction mechanisms] | 84 |
| COG1352 | CheR Methylase of chemotaxis methyl-accepting proteins [Cell motility and secretion / Signal transduction mechanisms] | 80 |
| COG3480 | SdrC Predicted secreted protein containing a PDZ domain [Signal transduction mechanisms] | 78 |
| COG3604 | FhlA Transcriptional regulator containing GAF, AAA-type ATPase, and DNA binding domains [Transcription / Signal transduction mechanisms] | 77 |
| COG3629 | DnrI DNA-binding transcriptional activator of the SARP family [Signal transduction mechanisms] | 76 |
| COG5411 | Phosphatidylinositol 5-phosphate phosphatase [Signal transduction mechanisms] | 57 |
| COG3292 | Predicted periplasmic ligand-binding sensor domain [Signal transduction mechanisms] | 54 |
| COG2905 | Predicted signal-transduction protein containing cAMP-binding and CBS domains [Signal transduction mechanisms] | 53 |
| COG4650 | RtcR Sigma54-dependent transcription regulator containing an AAA-type ATPase domain and a DNA-binding domain [Transcription / Signal transduction mechanisms] | 52 |
| COG5599 | PTP2 Protein tyrosine phosphatase [Signal transduction mechanisms] | 50 |
| COG1819 | Glycosyl transferases, related to UDP-glucuronosyltransferase [Carbohydrate transport and metabolism / Signal transduction mechanisms] | 50 |
| COG3947 | Response regulator containing CheY-like receiver and SARP domains [Signal transduction mechanisms] | 49 |
| COG2114 | CyaA Adenylate cyclase, family 3 (some proteins contain HAMP domain) [Signal transduction mechanisms] | 45 |
| COG2453 | CDC14 Predicted protein-tyrosine phosphatase [Signal transduction mechanisms] | 43 |
| COG5422 | ROM1 RhoGEF, Guanine nucleotide exchange factor for Rho/Rac/Cdc42-like GTPases [Signal transduction mechanisms] | 42 |
| COG0664 | Crp cAMP-binding proteins - catabolite gene activator and regulatory subunit of cAMP-dependent protein kinases [Signal transduction mechanisms] | 39 |
| COG2365 | Protein tyrosine/serine phosphatase [Signal transduction mechanisms] | 31 |
| COG5032 | TEL1 Phosphatidylinositol kinase and protein kinases of the PI-3 kinase family [Signal transduction mechanisms / Cell division and chromosome partitioning / Chromatin structure and dynamics / DNA replication, recombination, and repair / Intracellular trafficking and secretion] | 27 |
| COG0834 | HisJ ABC-type amino acid transport/signal transduction systems, periplasmic component/domain [Amino acid transport and metabolism / Signal transduction mechanisms] | 23 |
| COG1842 | PspA Phage shock protein A (IM30), suppresses sigma54-dependent transcription [Transcription / Signal transduction mechanisms] | 22 |
| COG5261 | IQG1 Protein involved in regulation of cellular morphogenesis/cytokinesis [Cell division and chromosome partitioning / Signal transduction mechanisms] | 21 |
| COG0631 | PTC1 Serine/threonine protein phosphatase [Signal transduction mechanisms] | 21 |
| COG3448 | CBS-domain-containing membrane protein [Signal transduction mechanisms] | 20 |
| COG3103 | SH3 domain protein [Signal transduction mechanisms] | 19 |
| COG3290 | CitA Signal transduction histidine kinase regulating citrate/malate metabolism [Signal transduction mechanisms] | 18 |
| COG2062 | SixA Phosphohistidine phosphatase SixA [Signal transduction mechanisms] | 17 |
| COG3456 | Predicted component of the type VI protein secretion system, contains a FHA domain [Intracellular trafficking, secretion, and vesicular transport; Signal transduction mechanisms] | 16 |
| COG1716 | FOG: FHA domain [Signal transduction mechanisms] | 16 |
| COG2205 | KdpD Osmosensitive K+ channel histidine kinase [Signal transduction mechanisms] | 15 |
| COG0639 | ApaH Diadenosine tetraphosphatase and related serine/threonine protein phosphatases [Signal transduction mechanisms] | 15 |
| COG4191 | Signal transduction histidine kinase regulating C4-dicarboxylate transport system [Signal transduction mechanisms] | 14 |
| COG2197 | CitB Response regulator containing a CheY-like receiver domain and an HTH DNA-binding domain [Signal transduction mechanisms / Transcription] | 14 |
| COG1702 | PhoH Phosphate starvation-inducible protein PhoH, predicted ATPase [Signal transduction mechanisms] | 13 |
| COG3852 | NtrB Signal transduction histidine kinase, nitrogen specific [Signal transduction mechanisms] | 13 |
| COG5329 | Phosphoinositide polyphosphatase (Sac family) [Signal transduction mechanisms] | 12 |
| COG3916 | LasI N-acyl-L-homoserine lactone synthetase [Signal transduction mechanisms / Secondary metabolites biosynthesis, transport, and catabolism] | 12 |
| COG2208 | RsbU Serine phosphatase RsbU, regulator of sigma subunit [Signal transduction mechanisms / Transcription] | 12 |
| COG3850 | NarQ Signal transduction histidine kinase, nitrate/nitrite-specific [Signal transduction mechanisms] | 12 |
| COG0642 | BaeS Signal transduction histidine kinase [Signal transduction mechanisms] | 11 |
| COG3605 | PtsP Signal transduction protein containing GAF and PtsI domains [Signal transduction mechanisms] | 11 |
| COG3920 | Signal transduction histidine kinase [Signal transduction mechanisms] | 11 |
| COG5002 | VicK Signal transduction histidine kinase [Signal transduction mechanisms] | 11 |
| COG5000 | NtrY Signal transduction histidine kinase involved in nitrogen fixation and metabolism regulation [Signal transduction mechanisms] | 11 |
| COG2203 | FhlA FOG: GAF domain [Signal transduction mechanisms] | 10 |
| COG5212 | PDE1 Low-affinity cAMP phosphodiesterase [Signal transduction mechanisms] | 10 |
| COG2172 | RsbW Anti-sigma regulatory factor (Ser/Thr protein kinase) [Signal transduction mechanisms] | 10 |
| COG2202 | AtoS FOG: PAS/PAC domain [Signal transduction mechanisms] | 10 |
| COG5253 | MSS4 Phosphatidylinositol-4-phosphate 5-kinase [Signal transduction mechanisms] | 10 |
| COG4565 | CitB Response regulator of citrate/malate metabolism [Transcription / Signal transduction mechanisms] | 9 |
| COG0317 | SpoT Guanosine polyphosphate pyrophosphohydrolases/synthetases [Signal transduction mechanisms / Transcription] | 9 |
| COG4585 | Signal transduction histidine kinase [Signal transduction mechanisms] | 9 |
| COG1956 | GAF domain-containing protein [Signal transduction mechanisms] | 8 |
| COG4251 | Bacteriophytochrome (light-regulated signal transduction histidine kinase) [Signal transduction mechanisms] | 8 |
| COG5040 | BMH1 14-3-3 family protein [Signal transduction mechanisms] | 7 |
| COG3275 | LytS Putative regulator of cell autolysis [Signal transduction mechanisms] | 7 |
| COG4192 | Signal transduction histidine kinase regulating phosphoglycerate transport system [Signal transduction mechanisms] | 7 |
| COG1366 | SpoIIAA Anti-anti-sigma regulatory factor (antagonist of anti-sigma factor) [Signal transduction mechanisms] | 7 |
| COG0271 | BolA Stress-induced morphogen (activity unknown) [Signal transduction mechanisms] | 7 |
| COG0643 | CheA Chemotaxis protein histidine kinase and related kinases [Cell motility and secretion / Signal transduction mechanisms] | 7 |
| COG1966 | CstA Carbon starvation protein, predicted membrane protein [Signal transduction mechanisms] | 7 |
| COG4566 | TtrR Response regulator [Signal transduction mechanisms] | 6 |
| COG2972 | Predicted signal transduction protein with a C-terminal ATPase domain [Signal transduction mechanisms] | 6 |
| COG5409 | EXS domain-containing protein [Signal transduction mechanisms] | 5 |
| COG2199 | c-di-GMP synthetase (diguanylate cyclase, GGDEF domain) [Signal transduction mechanisms] | 5 |
| COG0394 | Wzb Protein-tyrosine-phosphatase [Signal transduction mechanisms] | 5 |
| COG3851 | UhpB Signal transduction histidine kinase, glucose-6-phosphate specific [Signal transduction mechanisms] | 5 |
| COG2508 | Regulator of polyketide synthase expression [Signal transduction mechanisms / Secondary metabolites biosynthesis, transport, and catabolism] | 4 |
| COG5408 | SPX domain-containing protein [Signal transduction mechanisms] | 4 |
| COG4564 | Signal transduction histidine kinase [Signal transduction mechanisms] | 4 |
| COG4219 | MecR1 Antirepressor regulating drug resistance, predicted signal transduction N-terminal membrane component [Transcription / Signal transduction mechanisms] | 4 |
| COG0745 | OmpR Response regulators consisting of a CheY-like receiver domain and a winged-helix DNA-binding domain [Signal transduction mechanisms / Transcription] | 3 |
| COG1493 | HprK Serine kinase of the HPr protein, regulates carbohydrate metabolism [Signal transduction mechanisms] | 3 |
| COG3706 | PleD Response regulator containing a CheY-like receiver domain and a GGDEF domain [Signal transduction mechanisms] | 3 |
| COG1974 | LexA SOS-response transcriptional repressors (RecA-mediated autopeptidases) [Transcription / Signal transduction mechanisms] | 3 |
| COG4725 | IME4 Transcriptional activator, adenine-specific DNA methyltransferase [Signal transduction mechanisms / Transcription] | 3 |
| COG0840 | Tar Methyl-accepting chemotaxis protein [Cell motility and secretion / Signal transduction mechanisms] | 2 |
| COG1734 | DksA DnaK suppressor protein [Signal transduction mechanisms] | 2 |
| COG4567 | Response regulator consisting of a CheY-like receiver domain and a Fis-type HTH domain [Signal transduction mechanisms / Transcription] | 2 |
| COG5041 | SKB2 Casein kinase II, beta subunit [Signal transduction mechanisms / Cell division and chromosome partitioning / Transcription] | 2 |
| COG5635 | Predicted NTPase (NACHT family) [Signal transduction mechanisms] | 2 |
| COG5057 | LAG1 Phosphotyrosyl phosphatase activator [Cell division and chromosome partitioning / Signal transduction mechanisms] | 2 |
| COG3887 | Predicted signaling protein consisting of a modified GGDEF domain and a DHH domain [Signal transduction mechanisms] | 2 |
| COG3880 | Modulator of heat shock repressor CtsR, McsA [Signal transduction mechanisms] | 2 |
| COG5035 | CDC50 Cell cycle control protein [Cell division and chromosome partitioning / Transcription / Signal transduction mechanisms] | 1 |
| COG5278 | Predicted periplasmic ligand-binding sensor domain [Signal transduction mechanisms] | 1 |
| COG2206 | c-di-GMP phosphodiesterase class II (HD-GYP domain) [Signal transduction mechanisms] | 1 |
| COG4753 | Response regulator containing CheY-like receiver domain and AraC-type DNA-binding domain [Signal transduction mechanisms] | 1 |
| COG1871 | CheD Chemotaxis protein; stimulates methylation of MCP proteins [Cell motility and secretion / Signal transduction mechanisms] | 1 |
| COG3848 | Phosphohistidine swiveling domain [Signal transduction mechanisms] | 1 |
| COG3476 | Tryptophan-rich sensory protein (mitochondrial benzodiazepine receptor homolog) [Signal transduction mechanisms] | 1 |