| Biotin carboxyl carrier protein of acetyl-CoA carboxylase | accB FTT_0472 | Q5NHI2 | 1 |
| Biotin carboxyl carrier protein of acetyl-CoA carboxylase (BCCP) | accB fabE PA4847 | P37799 | 1 |
| Biotin carboxylase (EC 6.3.4.14) (Acetyl-CoA carboxylase subunit A) (ACC) (EC 6.4.1.2) | accC fabG b3256 JW3224 | P24182 | 1 |
| Biotin carboxylase (EC 6.3.4.14) (EC 6.4.1.2) | accC Cj1290c | Q0P8W7 | 1 |
| Biotin carboxylase 1 (EC 6.3.4.14) (Acetyl-CoA carboxylase subunit A 1) (ACC 1) (EC 6.4.1.2) | accC1 accC yqhX BSU24340 | P49787 | 1 |
| Biotin synthase (EC 2.8.1.6) | bioB KU39_2713 | A0A0K2L6W9 | 1 |
| BipA protein | VSAK1_12522 | A6D7M7 | 1 |
| Bipartate energy taxis response protein cetB | cetB Cj1189c | Q0P967 | 1 |
| Blue copper oxidase CueO (Copper efflux oxidase) | cueO yacK b0123 JW0119 | P36649 | 1 |
| BNR repeat protein | FSU_2866 | D9S6Y4 | 1 |
| BNR/Asp-box repeat protein | FTT_0399c | Q5NHP8 | 1 |
| Branched chain amino acid transporter-ATP binding subunit | livG PP_1138 | Q88NR7 | 1 |
| Branched-chain amino acid aminotransferase (EC 2.6.1.42) | B195_02858 | M5QZS4 | 1 |
| Branched-chain amino acid aminotransferase protein (Class IV) | ilvE FTN_0063 | A0Q409 | 1 |
| Branched-chain amino acid transport system carrier protein | VSAK1_11218 | A6D8U4 | 1 |
| Branched-chain amino-acid ABC transport system ATP-binding protein | livF Cj1014c | Q0P9N8 | 1 |
| Branched-chain-amino-acid aminotransferase (EC 2.6.1.42) | bcaT SPy_0911 | Q9A068 | 1 |
| Butyryl-CoA dehydrogenase | B195_15949 | M5QEQ1 | 1 |
| Butyryl-CoA dehydrogenase (EC 1.3.8.1) | CPC_0118 | B1BEN7 | 1 |
| Butyryl-CoA dehydrogenase (EC 1.3.99.-) | bcd2 CD630_10540 | Q18AQ1 | 1 |
| C-terminal domain of Arg-and Lys-gingipain proteinase | PGN_0295 | B2RHG9 | 1 |
| C4-dicarboxylate ABC transporter permease | KW89_3p26 | A0A0K2E1L4 | 1 |
| C4-dicarboxylate transport transcriptional regulatory protein DctD | dctD PA5166 | Q9HU19 | 1 |
| C5a peptidase (EC 3.4.21.110) (SCP) | scpA SPy_2010 M5005_Spy1715 | P58099 | 1 |
| CAAX amino terminal protease family (CAAX amino terminal protease family protein) | CP4_3457 pNetB-NE10_65 pNetB_00066 | F8UNI7 | 1 |
| CAAX amino terminal protease family protein | CPC_0155 | B1BEK3 | 1 |
| Cadherin domain protein | FSU_2932 | D9S7H1 | 1 |
| Cadherin domain protein | FSU_2931 | C9RL15 | 1 |
| Caffeoyl-CoA O-methyltransferase | VSAK1_15527 | A6D4L6 | 1 |
| cAMP-activated global transcriptional regulator CRP (Catabolite activator protein) (CAP) (Catabolite gene activator) (cAMP receptor protein) (CRP) (cAMP regulatory protein) | crp cap STM3466 | P0A2T6 | 1 |
| CapD protein, required for the biosynthesis of type 1 capsular polysaccharide | capD spr0092 | Q8DRJ2 | 1 |
| Capsular polysaccharide ABC transporter | Fphi_1158 | B0TXC4 | 1 |
| Capsular polysaccharide biosynthesis protein | CPC_0272 | B1BH96 | 1 |
| Capsular polysaccharide biosynthsis protein | CPE0491 | Q8XN47 | 1 |
| Capsule assembly Wzi family protein | J715_2624 | A0A062KVQ1 | 1 |
| Capsule biosynthesis protein CapB | capB FTN_1201 | A0Q772 | 1 |
| Capsule biosynthesis protein capB | capB FTT_0805 | Q5NGN0 | 1 |
| Capsule chain length determinant protein | CPC_0473 | B1BGS7 | 1 |
| Carbamate kinase | B195_06365 | M5QM27 | 1 |
| Carbamate kinase | arcC spr1958 | Q8DN28 | 1 |
| Carbamate kinase | arcC SPy_1541 | Q99YT9 | 1 |
| Carbamoyl-phosphate synthase (glutamine-hydrolyzing) (EC 6.3.5.5) | carB_2 FSU_1279 | C9RNJ8 | 1 |
| Carbamoyl-phosphate synthase large chain (EC 6.3.5.5) (Carbamoyl-phosphate synthetase ammonia chain) | carB Fphi_0806 | B0TWC0 | 1 |
| Carbamoyl-phosphate synthase large chain (EC 6.3.5.5) (Carbamoyl-phosphate synthetase ammonia chain) | carB FTN_0020 | A0Q3W6 | 1 |
| Carbamoyl-phosphate synthase large chain (EC 6.3.5.5) (Carbamoyl-phosphate synthetase ammonia chain) | carB B195_04347 | M5QNR0 | 1 |
| Carbamoyl-phosphate synthase large chain (EC 6.3.5.5) (Carbamoyl-phosphate synthetase ammonia chain) | carB CPR_2576 | Q0SPY4 | 1 |
| Carbamoyl-phosphate synthase large chain (EC 6.3.5.5) (Carbamoyl-phosphate synthetase ammonia chain) | carB YPO0482 y3692 YP_3697 | Q8ZIL4 | 1 |
| Carbamoyl-phosphate synthase large chain (EC 6.3.5.5) (Carbamoyl-phosphate synthetase ammonia chain) | carB KPR_0964 | R4Y993 | 1 |
| Carbamoyl-phosphate synthase large chain (EC 6.3.5.5) (Carbamoyl-phosphate synthetase ammonia chain) | carB pyrA b0033 JW0031 | P00968 | 1 |
| Carbamoyl-phosphate synthase large chain (EC 6.3.5.5) (Carbamoyl-phosphate synthetase ammonia chain) | carB Smlt2219 | B2FQ72 | 1 |
| Carbamoyl-phosphate synthase large chain (EC 6.3.5.5) (Carbamoyl-phosphate synthetase ammonia chain) | carB SPy_0835 M5005_Spy0643 | Q9A0C6 | 1 |
| Carbamoyl-phosphate synthase large chain (EC 6.3.5.5) (Carbamoyl-phosphate synthetase ammonia chain) | carB Cj0279 | Q9PIL7 | 1 |
| Carbamoyl-phosphate synthase pyrimidine-specific large chain (EC 6.3.5.5) (Carbamoyl-phosphate synthetase ammonia chain) | pyrAB BSU15520 | P25994 | 1 |
| Carbamoyl-phosphate synthase small chain (EC 6.3.5.5) (Carbamoyl-phosphate synthetase glutamine chain) | carA Fphi_0805 | B0TWB9 | 1 |
| Carbamoyl-phosphate synthase small chain (EC 6.3.5.5) (Carbamoyl-phosphate synthetase glutamine chain) | carA FTN_0021 | A0Q3W7 | 1 |
| Carbamoyl-phosphate synthase small chain (EC 6.3.5.5) (Carbamoyl-phosphate synthetase glutamine chain) | carA PA4758 | P38098 | 1 |
| Carbamoyl-phosphate synthase small chain (EC 6.3.5.5) (Carbamoyl-phosphate synthetase glutamine chain) | carA pyrA b0032 JW0030 | P0A6F1 | 1 |
| Carbamoyl-phosphate synthase small chain (EC 6.3.5.5) (Carbamoyl-phosphate synthetase glutamine chain) | carA SPy_0833 M5005_Spy0642 | P63735 | 1 |
| Carbapenem-associated resistance protein (Outer membrane protein) | carO | A6YRR1 | 1 |
| Carbohydrate binding protein, CMB family 6 | FSU_2289 | C9RS46 | 1 |
| Carbohydrate-binding protein | FSU_2441 | C9RIQ0 | 1 |
| Carbohydrate-binding protein, CBM 6 family | FSU_3044 | C9RLP9 | 1 |
| Carbohydrate-binding protein, CBM6 family | FSU_2273 | C9RS31 | 1 |
| Carbohydrate-binding protein, CBM6 family (Cellulase Cel5K) | FSU_2290 | Q9F4L1 | 1 |
| Carbon starvation protein | VSAK1_14047 | A6D3N5 | 1 |
| Carbon starvation protein, CstA | cstA CD630_26000 | Q182U0 | 1 |
| Carbon storage regulator | csrA SF2719 S2910 | P69918 | 1 |
| Carbon storage regulator | csrA SSON_2840 | Q3YYG7 | 1 |
| Carbon-nitrogen hydrolase | FTN_1383 | A0Q7N8 | 1 |
| Carbon-nitrogen hydrolase family protein | FTN_0827 | A0Q650 | 1 |
| Carbon-nitrogen hydrolase family protein | VSAK1_15537 | A6D4L8 | 1 |
| Carbonic anhydrase (EC 4.2.1.1) (Carbonate dehydratase) | Fphi_1521 | B0TZ93 | 1 |
| Carbonic anhydrase (EC 4.2.1.1) (Carbonate dehydratase) | cynT FTN_1087 | A0Q6V8 | 1 |
| Carbonic anhydrase (EC 4.2.1.1) (Carbonate dehydratase) | PSLT046 | Q7DAP2 | 1 |
| Carbonic anhydrase (EC 4.2.1.1) (Carbonate dehydratase) | cynT PP_0100 | Q88RM9 | 1 |
| Carbonic anhydrase (EC 4.2.1.1) (Carbonate dehydratase) | YPO0819 | Q7CGY2 | 1 |
| Carbonic anhydrase (EC 4.2.1.1) (Carbonate dehydratase) | cah | Q50940 | 1 |
| Carbonic anhydrase (EC 4.2.1.1) (Carbonate dehydratase) | OOM_1314 | I2AZY1 | 1 |
| Carboxy-terminal-processing protease (EC 3.4.21.102) | ctpA PP_5058 | Q88CX2 | 1 |
| CARBOXYL-TERMINAL PROTEASE | prc jhp_1269 | Q9ZJN6 | 1 |
| Carboxyl-terminal protease | B195_02251 | M5QN57 | 1 |
| Carboxyl-terminal protease-related protein | PG_1620 | Q7MUB1 | 1 |
| Carboxylic ester hydrolase (EC 3.1.1.-) | NSU_3348 | G6EG77 | 1 |
| Cardiolipin synthase (CL synthase) (EC 2.7.8.-) | cls AC1_0897 | B1R6D8 | 1 |
| Cardiolipin synthase (CL synthase) (EC 2.7.8.-) | SAOUHSC_02323 | Q2FWG8 | 1 |
| Cardiolipin synthase (EC 2.7.8.-) | cls spr0180 | Q8DRD9 | 1 |
| Cardiolipin synthetase (EC 2.7.8.-) | ybhO FTT_0997 | Q5NG58 | 1 |
| CarF domain protein | FSU_2121 | C9RRP2 | 1 |
| Carnitine transport ATP-binding protein OpuCA (EC 3.6.3.32) | opuCA LMRG_00880 | G2JZ44 | 1 |
| Carnitine transport binding protein OpuCC | opuCC LMRG_00878 | G2JZ42 | 1 |
| Carnitine transport permease protein OpuCB | opuCB LMRG_00879 | G2JZ43 | 1 |
| Carnitine transport permease protein OpuCD | opuCD LMRG_00877 | G2JZ41 | 1 |
| Catabolite activator protein (CAP), cyclic AMP receptor protein (CRP family) | crp SCH_3400 | Q57J06 | 1 |
| Catabolite control protein A | ccpA SPy_0514 | Q9A118 | 1 |
| Catabolite control protein A | SAOUHSC_01850 | Q2G295 | 1 |
| Catabolite repression control protein | crc PA5332 | G3XDB0 | 1 |
| Catalase (EC 1.11.1.6) | katB MXAN_4389 | Q1D461 | 1 |
| Catalase (EC 1.11.1.6) | katA jhp_0809 | Q9ZKX5 | 1 |
| Catalase (EC 1.11.1.6) | Pnap_2662 | A1VQN6 | 1 |
| Catalase (EC 1.11.1.6) | kat lmo2785 | Q8Y3P9 | 1 |