| Alpha-crystallin (Acr) (14 kDa antigen) (16 kDa antigen) (HSP 16.3) (Nox16) | hspX acr Rv2031c MTV018.18c | P9WMK1 | 1 |
| Alpha-D-ribose 1-methylphosphonate 5-phosphate C-P lyase (PRPn C-P lyase) (EC 4.7.1.1) | VSAK1_19824 | A6CWP5 | 1 |
| Alpha-galactosidase | VSAK1_04377 | A6D815 | 1 |
| Alpha-galactosidase (EC 3.2.1.22) (Melibiase) | FSU_2272 | C9RS30 | 1 |
| Alpha-galactosidase AgaN | SP70585_1956 | C1C9G7 | 1 |
| Alpha-glycerophosphate oxidase (EC 1.1.3.21) (Exported protein 6) (Glycerol-3-phosphate oxidase) | glpO exp6 SP_2185 | P35596 | 1 |
| Alpha-glycerophosphate oxidase (EC 1.1.3.21) (Glycerol-3-phosphate oxidase) | glpO SPy_1683 M5005_Spy1380 | Q99YI8 | 1 |
| Alpha-keto-acid decarboxylase (KDC) (EC 4.1.1.-) | kdc Rv0853c | P9WG37 | 1 |
| Alpha-ketoglutarate decarboxylase (EC 1.2.4.2) | OOM_0571 | I2AY42 | 1 |
| Alpha-ketoglutarate permease | pcaT PP_1378 | Q88N38 | 1 |
| Alpha-ketoglutarate permease | kgtP PP_1400 | Q88N16 | 1 |
| Alpha-subunit of electron transfer flavoprotein | etfA1 CD630_04010 | Q188I8 | 1 |
| Alpha-xylosidase (EC 3.2.1.177) | yicI b3656 JW3631 | P31434 | 1 |
| Alpha/beta hydrolase (Prolyl oligopeptidase family protein) | A7M90_04935 AB895_0377 | V5VBI4 | 1 |
| Altronate hydrolase | uxaA ETAE_0438 | D0ZBA7 | 1 |
| AmgS | amgS PA5199 | Q9HTZ0 | 1 |
| Amidohydrolase | AB237_1636 | A0A0E1PQT6 | 1 |
| Amidohydrolase | NSU_2196 | G6ECX5 | 1 |
| Amidohydrolase family protein | MXAN_0094 | Q1DG46 | 1 |
| Amidophosphoribosyltransferase (ATase) (EC 2.4.2.14) (Glutamine phosphoribosylpyrophosphate amidotransferase) (GPATase) | purF Fphi_0904 | B0TWL9 | 1 |
| Amidophosphoribosyltransferase (ATase) (EC 2.4.2.14) (Glutamine phosphoribosylpyrophosphate amidotransferase) (GPATase) | purF Cj0196c | Q0PBU3 | 1 |
| Amidophosphoribosyltransferase (ATase) (EC 2.4.2.14) (Glutamine phosphoribosylpyrophosphate amidotransferase) (GPATase) | purF B195_18416 | M5QVB3 | 1 |
| Amidophosphoribosyltransferase (ATase) (EC 2.4.2.14) (Glutamine phosphoribosylpyrophosphate amidotransferase) (GPATase) | purF VSAK1_10113 | A6D0N0 | 1 |
| Amino acid ABC transporter | VS_1403 | B7VNJ0 | 1 |
| Amino acid ABC transporter ATP binding protein | PA1339 | Q9I405 | 1 |
| Amino acid ABC transporter ATP-binding protein | B195_18376 | M5QFQ4 | 1 |
| Amino acid ABC transporter membrane protein | PA1341 | Q9I403 | 1 |
| Amino acid ABC transporter periplasmic amino acid-binding protein | B195_02125 | M5QQ72 | 1 |
| Amino acid ABC transporter substrate-binding protein | B195_18356 | M5QRN9 | 1 |
| Amino acid ABC transporter substrate-binding protein | B195_11231 | M5QUZ0 | 1 |
| Amino acid ABC transporter, amino acid-binding protein/permease protein, His/Glu/Gln/Arg/opine family | CPC_2344 | B1BIC2 | 1 |
| Amino acid ABC transporter, ATP-binding protein | VSAK1_00300 | A6D7S2 | 1 |
| Amino acid ABC transporter, ATP-binding protein, putative | SAOUHSC_02697 | Q2FVL4 | 1 |
| Amino acid ABC transporter, permease protein | PP_0281 | Q88R53 | 1 |
| Amino acid ABC transporter, permease protein | PP_5023 | Q88D06 | 1 |
| Amino acid ABC transporter, permease protein, putative | SAOUHSC_00732 | Q2G088 | 1 |
| Amino acid ABC transporter-like protein, putative | SAOUHSC_02729 | Q2FVI1 | 1 |
| Amino acid antiporter | FTT_0968c | Q5NG85 | 1 |
| Amino acid permease | jhp_0406 | Q9ZM17 | 1 |
| Amino acid permease family protein | CJD_1330 | B1V694 | 1 |
| Amino acid transporter | FTT_0361c | Q5NHT4 | 1 |
| Amino acid transporter | FTT_1730c | Q5NEB1 | 1 |
| Aminoacyl-histidine dipeptidase (EC 3.4.13.3) | pepD YPO3230 | Q7CK62 | 1 |
| Aminoacyl-histidine dipeptidase (Peptidase D) | pepD SCH_0317 | Q57ST8 | 1 |
| Aminoacyltransferase FemA (EC 2.3.2.17) (Factor essential for expression of methicillin resistance A) (N-acetylmuramoyl-L-alanyl-D-glutamyl-L-lysyl-(N6-glycyl)-D-alanyl-D-alanine-diphosphoundecaprenyl-N-acetylglucosamine:glycine glycyltransferase) | femA SAOUHSC_01373 | Q2FYR2 | 1 |
| Aminoacyltransferase FemB (EC 2.3.2.18) (Factor essential for expression of methicillin resistance B) (N-acetylmuramoyl-L-alanyl-D-glutamyl-L-lysyl-(N6-triglycine)-D-alanyl-D-alanine-diphosphoundecaprenyl-N-acetylglucosamine:glycine glycyltransferase) | femB SAOUHSC_01374 | Q2FYR1 | 1 |
| Aminomethyltransferase (EC 2.1.2.10) | B195_06335 | M5QKE8 | 1 |
| Aminomethyltransferase (EC 2.1.2.10) | gcvT2 PA2442 | Q9I140 | 1 |
| Aminomethyltransferase (EC 2.1.2.10) (Glycine cleavage system T protein) | gcvT Fphi_0340 | B0TZJ8 | 1 |
| Aminomethyltransferase (EC 2.1.2.10) (Glycine cleavage system T protein) | gcvT FTN_0505 | A0Q585 | 1 |
| Aminomethyltransferase (EC 2.1.2.10) (Glycine cleavage system T protein) | gcvT SFV_2953 | Q0T0Z3 | 1 |
| Aminomethyltransferase (EC 2.1.2.10) (Glycine cleavage system T protein) | gcvT OOM_1069 | I2AZB7 | 1 |
| Aminomethyltransferase (EC 2.1.2.10) (Glycine cleavage system T protein) | gcvT SAOUHSC_01634 | Q2FY33 | 1 |
| Aminopeptidase (EC 3.4.11.-) | MXAN_6822 | Q1CXD4 | 1 |
| Aminopeptidase (EC 3.4.11.-) | pepN SPy_1239 | Q99ZG7 | 1 |
| Aminopeptidase C (Bleomycin hydrolase) (EC 3.4.22.40) | SP70585_0340 | C1CB55 | 1 |
| Aminopeptidase C (EC 3.4.22.-) | pepC spr0258 | Q8DRA0 | 1 |
| Aminopeptidase N | Fphi_0833 | B0TWE8 | 1 |
| Aminopeptidase N | pepN FTN_1768 | A0Q8Q3 | 1 |
| Aminopeptidase N | NSU_2020 | G6ECE9 | 1 |
| Aminotransferase | wbtQ FTN_1430 | A0Q7T3 | 1 |
| Aminotransferase | B195_15067 | M5QFY1 | 1 |
| Aminotransferase (EC 2.6.1.-) | Fphi_0882 | B0TWJ7 | 1 |
| Aminotransferase (EC 2.6.1.-) | Fphi_0481 | B0U070 | 1 |
| Aminotransferase (EC 2.6.1.-) | Fphi_0426 | B0U015 | 1 |
| Aminotransferase (EC 2.6.1.-) | Fphi_0015 | B0TXR6 | 1 |
| Aminotransferase (EC 2.6.1.-) | FTN_1146 | A0Q717 | 1 |
| Aminotransferase (EC 2.6.1.-) | FTN_0343 | A0Q4T4 | 1 |
| Aminotransferase (EC 2.6.1.-) | B195_18764 | M5QFJ0 | 1 |
| Aminotransferase (EC 2.6.1.-) | patB spr1376 | Q8DP38 | 1 |
| Aminotransferase (EC 2.6.1.-) | aspC YPO1410 | Q0WH05 | 1 |
| Aminotransferase (EC 2.6.1.-) | aspC KPR_3623 | R4YBN3 | 1 |
| Aminotransferase (EC 2.6.1.-) | aspC SPy_0650 | Q9A0S0 | 1 |
| Aminotransferase (EC 2.6.1.-) | aspC_1 SAMEA3375004_01541 | A0A160YB04 | 1 |
| Aminotransferase (EC 2.6.1.-) | SAMEA3375059_04317 | A0A160WP10 | 1 |
| Aminotransferase (EC 2.6.1.-) | aspC SCH_0955 | Q57R00 | 1 |
| Aminotransferase, class II (EC 2.3.1.-) | FTT_0980 | Q5NG74 | 1 |
| Aminotransferase, class V | MXAN_5155 | Q1D215 | 1 |
| Ammonium transporter | amtB PA5287 | Q9HTR7 | 1 |
| AMP nucleosidase (EC 3.2.2.4) | amn B195_13041 | M5QZE5 | 1 |
| AMP-binding family protein | FSU_0296 | D9S5P8 | 1 |
| AMP-binding protein | FTN_0604 | A0Q5I4 | 1 |
| AMP-binding protein (EC 2.3.1.40) (EC 6.2.1.20) | OOM_1181 | I2AZL2 | 1 |
| AMP-dependent synthetase/ligase | B195_15964 | M5QGY5 | 1 |
| Anaerobic C4-dicarboxylate transporter | dcuA Cj0088 | Q0PC49 | 1 |
| Anaerobic C4-dicarboxylate transporter | VSAK1_26675 | A6D8V2 | 1 |
| Anaerobic C4-dicarboxylate transporter DcuA | dcuA genA b4138 JW5735 | P0ABN5 | 1 |
| Anaerobic glycerol-3-phosphate dehydrogenase (EC 1.1.99.5) | glpA FTT_0132 | Q5NIE3 | 1 |
| Anaerobic ribonucleoside-triphosphate reductase-activating protein (EC 1.97.1.-) | nrdG SPy_2105 | Q99XQ0 | 1 |
| Ankyrin repeat family protein | FSU_0252 | C9RPN5 | 1 |
| Ankyrin repeat family protein | KU39_1999 | A0A0K2L4W3 | 1 |
| Anthranilate synthase component 1 (EC 4.1.3.27) | VSAK1_01022 | A6D572 | 1 |
| Anthranilate synthase component 1 (EC 4.1.3.27) | trpE FTT_1802c | Q5NE58 | 1 |
| Antigen 43 (AG43) (Fluffing protein) [Cleaved into: Antigen 43 alpha chain; Antigen 43 beta chain] | flu yeeQ yzzX b2000 JW1982 | P39180 | 1 |
| Antigen-like protein | FSU_2000 | C9RRC9 | 1 |
| Antitoxin | spr1586 | Q8DNR2 | 1 |
| AphB/LysR family protein | VSAK1_10108 | A6D0M9 | 1 |
| Apolipoprotein N-acyltransferase (ALP N-acyltransferase) (EC 2.3.1.-) | lnt PP_4790 | Q88DN4 | 1 |
| Apolipoprotein N-acyltransferase (ALP N-acyltransferase) (EC 2.3.1.-) | lnt FTT_0614c | Q5NH57 | 1 |
| App protein | app | Q9X7H1 | 1 |