| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| P23325 | Ankyrin repeat protein A; Ankyrin-like regulatory protein; | arpA; arp yjaC; b4017 JW3977; | NP_418441.1;YP_492160.1; | 728 | escherichia-coli |
| P0AB93 | Arsenical pump membrane protein; Arsenic efflux pump protein; | arsB; arsF; b3502 JW3469; | NP_417959.4;YP_491933.1; | 429 | escherichia-coli |
| P0CF87 | Putative arsenate reductase; EC 1.20.4.1; Arsenical pump modifier; | yfjU; JW2619; | YP_490859.1; | 104 | escherichia-coli |
| P0AB96 | Arsenate reductase; EC 1.20.4.1; Arsenical pump modifier; | arsC; arsG; b3503 JW3470; | NP_417960.1;YP_491932.1; | 141 | escherichia-coli |
| P18032 | Protein ArtA; | artA; ECOK12F093; | NP_061472.1;YP_008997936.1;YP_009071250.1;YP_009074151.1; | 104 | escherichia-coli |
| P30859 | Putative ABC transporter arginine-binding protein 2; | artI; b0863 JW0847; | NP_415384.1;YP_489136.1; | 243 | escherichia-coli |
| P0AE30 | Arginine ABC transporter permease protein ArtM; | artM; b0861 JW0845; | NP_415382.1;YP_489134.1; | 222 | escherichia-coli |
| P30860 | ABC transporter arginine-binding protein 1; | artJ; b0860 JW0844; | NP_415381.1;YP_489133.1; | 243 | escherichia-coli |
| P37309 | Arsenical resistance operon repressor; | arsR; arsE; b3501 JW3468; | NP_417958.1;YP_491934.1; | 117 | escherichia-coli |
| P0AAF6 | Arginine transport ATP-binding protein ArtP; EC 3.6.3.-; | artP; b0864 JW0848; | NP_415385.1;YP_489137.1; | 242 | escherichia-coli |
| P0AE34 | Arginine ABC transporter permease protein ArtQ; | artQ; b0862 JW0846; | NP_415383.1;YP_489135.1; | 238 | escherichia-coli |
| P24240 | 6-phospho-beta-glucosidase AscB; EC 3.2.1.86; | ascB; b2716 JW2686; | NP_417196.1;YP_490925.1; | 474 | escherichia-coli |
| P24242 | HTH-type transcriptional regulator AscG; Cryptic asc operon repressor; | ascG; b2714 JW5434; | NP_417194.2;YP_490923.1; | 336 | escherichia-coli |
| P25550 | Anaerobic sulfatase-maturating enzyme homolog AslB; AnSME homolog; | aslB; atsB; b3800 JW5594; | YP_026259.1;YP_491642.1; | 411 | escherichia-coli |
| P25549 | Arylsulfatase; AS; EC 3.1.6.1; Aryl-sulfate sulphohydrolase; | aslA; atsA; b3801 JW3773; | NP_418245.1;YP_491641.1; | 551 | escherichia-coli |
| P28249 | Protein AsmA; | asmA; yegA; b2064 JW2049; | NP_416568.1;YP_490306.1; | 617 | escherichia-coli |
| P00963 | Aspartate--ammonia ligase; EC 6.3.1.1; Asparagine synthetase A; | asnA; b3744 JW3722; | NP_418200.1;YP_006952153.1;YP_491685.1; | 330 | escherichia-coli |
| P22106 | Asparagine synthetase B [glutamine-hydrolyzing]; AS-B; EC 6.3.5.4; | asnB; b0674 JW0660; | NP_415200.1;YP_488954.1; | 554 | escherichia-coli |
| P0ACI6 | Regulatory protein AsnC; | asnC; b3743 JW3721; | NP_418199.1;YP_006952152.1;YP_491686.1; | 152 | escherichia-coli |
| P0AC38 | Aspartate ammonia-lyase; Aspartase; EC 4.3.1.1; | aspA; b4139 JW4099; | NP_418562.4;YP_492282.1; | 478 | escherichia-coli |
