COG cluster associated with parent COG general functional cagegory: Intracellular trafficking, secretion and vesicular transport
COG ID
Link to COG
Functional Description Protein Count
Link to
protein list

COG0823 TolB Periplasmic component of the Tol biopolymer transport system [Intracellular trafficking and secretion] 441
COG3063 PilF Tfp pilus assembly protein PilF [Cell motility and secretion / Intracellular trafficking and secretion] 251
COG5010 TadD Flp pilus assembly protein TadD, contains TPR repeats [Intracellular trafficking and secretion] 217
COG5167 VID27 Protein involved in vacuole import and degradation [Intracellular trafficking and secretion] 180
COG5082 AIR1 Arginine methyltransferase-interacting protein, contains RING Zn-finger [Posttranslational modification, protein turnover, chaperones / Intracellular trafficking and secretion] 134
COG2805 PilT Tfp pilus assembly protein, pilus retraction ATPase PilT [Cell motility and secretion / Intracellular trafficking and secretion] 129
COG5096 Vesicle coat complex, various subunits [Intracellular trafficking and secretion] 118
COG2804 PulE Type II secretory pathway, ATPase PulE/Tfp pilus assembly pathway, ATPase PilB [Cell motility and secretion / Intracellular trafficking and secretion] 109
COG5064 SRP1 Karyopherin (importin) alpha [Intracellular trafficking and secretion] 104
COG5215 KAP95 Karyopherin (importin) beta [Intracellular trafficking and secretion] 98
COG0552 FtsY Signal recognition particle GTPase [Intracellular trafficking and secretion] 91
COG0653 SecA Preprotein translocase subunit SecA (ATPase, RNA helicase) [Intracellular trafficking and secretion] 90
COG5240 SEC21 Vesicle coat complex COPI, gamma subunit [Intracellular trafficking and secretion] 81
COG0541 Ffh Signal recognition particle GTPase [Intracellular trafficking and secretion] 71
COG4962 CpaF Flp pilus assembly protein, ATPase CpaF [Intracellular trafficking and secretion] 61
COG3031 PulC Type II secretory pathway, component PulC [Intracellular trafficking and secretion] 60
COG3267 ExeA Type II secretory pathway, component ExeA (predicted ATPase) [Intracellular trafficking and secretion] 60
COG5407 SEC63 Preprotein translocase subunit Sec63 [Intracellular trafficking and secretion] 52
COG3523 IcmF Type VI protein secretion system component VasK [Intracellular trafficking, secretion, and vesicular transport] 46
COG3946 VirJ Type IV secretory pathway, VirJ component [Intracellular trafficking and secretion] 43
COG0630 VirB11 Type IV secretory pathway, VirB11 components, and related ATPases involved in archaeal flagella biosynthesis [Cell motility and secretion / Intracellular trafficking and secretion] 39
COG2874 FlaH Predicted ATPases involved in biogenesis of archaeal flagella [Cell motility and secretion / Intracellular trafficking and secretion] 36
COG4972 PilM Tfp pilus assembly protein, ATPase PilM [Cell motility and secretion / Intracellular trafficking and secretion] 33
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
COG0616 SppA Periplasmic serine proteases (ClpP class) [Posttranslational modification, protein turnover, chaperones / Intracellular trafficking and secretion] 25
COG5008 PilU Tfp pilus assembly protein, ATPase PilU [Cell motility and secretion / Intracellular trafficking and secretion] 25
COG5070 VRG4 Nucleotide-sugar transporter [Carbohydrate transport and metabolism / Posttranslational modification, protein turnover, chaperones / Intracellular trafficking and secretion] 24
COG0740 ClpP Protease subunit of ATP-dependent Clp proteases [Posttranslational modification, protein turnover, chaperones / Intracellular trafficking and secretion] 24
COG5028 Vesicle coat complex COPII, subunit SEC24/subunit SFB2/subunit SFB3 [Intracellular trafficking and secretion] 22
COG1157 FliI Flagellar biosynthesis/type III secretory pathway ATPase [Cell motility and secretion / Intracellular trafficking and secretion] 22
COG5101 CRM1 Importin beta-related nuclear transport receptor [Nuclear structure / Intracellular trafficking and secretion] 20
COG5043 MRS6 Vacuolar protein sorting-associated protein [Intracellular trafficking and secretion] 19
COG5391 Phox homology (PX) domain protein [Intracellular trafficking and secretion / General function prediction only] 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
COG5347 GTPase-activating protein that regulates ARFs (ADP-ribosylation factors), involved in ARF-mediated vesicular transport [Intracellular trafficking and secretion] 16
COG5074 t-SNARE complex subunit, syntaxin [Intracellular trafficking and secretion] 16
COG4963 CpaE Flp pilus assembly protein, ATPase CpaE [Intracellular trafficking and secretion] 15
COG5325 t-SNARE complex subunit, syntaxin [Intracellular trafficking and secretion] 15
COG5153 CVT17 Putative lipase essential for disintegration of autophagic bodies inside the vacuole [Intracellular trafficking and secretion / Lipid metabolism] 12
COG5122 TRS23 Transport protein particle (TRAPP) complex subunit [Intracellular trafficking and secretion] 11
COG0342 SecD Preprotein translocase subunit SecD [Intracellular trafficking and secretion] 10
COG5030 APS2 Clathrin adaptor complex, small subunit [Intracellular trafficking and secretion] 9
COG5047 SEC23 Vesicle coat complex COPII, subunit SEC23 [Intracellular trafficking and secretion] 9
COG0341 SecF Preprotein translocase subunit SecF [Intracellular trafficking and secretion] 9
COG5171 YRB1 Ran GTPase-activating protein (Ran-binding protein) [Intracellular trafficking and secretion] 9
COG5308 NUP170 Nuclear pore complex subunit [Intracellular trafficking and secretion] 8
COG5143 SNC1 Synaptobrevin/VAMP-like protein [Intracellular trafficking and secretion] 8
COG5052 YOP1 Protein involved in membrane traffic [Intracellular trafficking and secretion] 7
COG5117 NOC3 Protein involved in the nuclear export of pre-ribosomes [Translation, ribosomal structure and biogenesis / Intracellular trafficking and secretion] 7
COG5128 Transport protein particle (TRAPP) complex subunit [Intracellular trafficking and secretion] 7
COG5158 SEC1 Proteins involved in synaptic transmission and general secretion, Sec1 family [Intracellular trafficking and secretion] 7
COG1317 FliH Flagellar biosynthesis/type III secretory pathway protein [Cell motility and secretion / Intracellular trafficking and secretion] 6
COG5079 SAC3 Nuclear protein export factor [Intracellular trafficking and secretion / Cell division and chromosome partitioning] 6
COG5102 SFT2 Membrane protein involved in ER to Golgi transport [Intracellular trafficking and secretion] 5
COG0706 YidC Preprotein translocase subunit YidC [Intracellular trafficking and secretion] 5
COG5080 YIP1 Rab GTPase interacting factor, Golgi membrane protein [Intracellular trafficking and secretion] 4
COG5058 LAG1 Protein transporter of the TRAM (translocating chain-associating membrane) superfamily, longevity assurance factor [Intracellular trafficking and secretion] 4
COG0681 LepB Signal peptidase I [Intracellular trafficking and secretion] 4
COG5173 SEC6 Exocyst complex subunit SEC6 [Intracellular trafficking and secretion] 3
COG0201 SecY Preprotein translocase subunit SecY [Intracellular trafficking and secretion] 3
COG5196 ERD2 ER lumen protein retaining receptor [Intracellular trafficking and secretion] 3
COG4959 TraF Type IV secretory pathway, protease TraF [Posttranslational modification, protein turnover, chaperones / Intracellular trafficking and secretion] 2
COG5249 RER1 Golgi protein involved in Golgi-to-ER retrieval [Intracellular trafficking and secretion] 2
COG4023 SBH1 Preprotein translocase subunit Sec61beta [Intracellular trafficking and secretion] 2
COG5120 GOT1 Membrane protein involved in Golgi transport [Intracellular trafficking and secretion] 2
COG2443 Sss1 Preprotein translocase subunit Sss1 [Intracellular trafficking and secretion] 2
COG5061 ERO1 Oxidoreductin, endoplasmic reticulum membrane-associated protein involved in disulfide bond formation [Posttranslational modification, protein turnover, chaperones / Intracellular trafficking and secretion] 2
COG3451 VirB4 Type IV secretory pathway, VirB4 components [Intracellular trafficking and secretion] 2
COG5066 SCS2 VAMP-associated protein involved in inositol metabolism [Intracellular trafficking and secretion] 1
COG1400 SEC65 Signal recognition particle 19 kDa protein [Intracellular trafficking and secretion] 1
COG2831 FhaC Hemolysin activation/secretion protein [Intracellular trafficking and secretion] 1
COG5232 SEC62 Preprotein translocase subunit Sec62 [Intracellular trafficking and secretion] 1
COG5233 GRH1 Peripheral Golgi membrane protein [Intracellular trafficking and secretion] 1
COG5073 VID24 Vacuolar import and degradation protein [Intracellular trafficking and secretion] 1
COG2095 MarC Multiple antibiotic transporter [Intracellular trafficking and secretion] 1