| Identifier | Protein names | Gene names | Cross reference refseq | Length | Species |
| Q47005 | Nitrogen assimilation regulatory protein nac; Nitrogen assimilation control protein; | nac; b1988 JW1967; | NP_416493.1;YP_490232.1; | 305 | escherichia-coli |
| P11458 | Quinolinate synthase A; EC 2.5.1.72; | nadA; nicA; b0750 JW0733; | NP_415271.1;YP_489023.1; | 347 | escherichia-coli |
| P10902 | L-aspartate oxidase; LASPO; EC 1.4.3.16; Quinolinate synthase B; | nadB; nicB; b2574 JW2558; | NP_417069.1;YP_490802.1; | 540 | escherichia-coli |
| P30011 | Nicotinate-nucleotide pyrophosphorylase [carboxylating]; EC 2.4.2.19; Quinolinate phosphoribosyltransferase [decarboxylating]; QAPRTase; | nadC; b0109 JW0105; | NP_414651.1;YP_488412.1; | 297 | escherichia-coli |
| P0A752 | Nicotinate-nucleotide adenylyltransferase; EC 2.7.7.18; Deamido-NAD(+) diphosphorylase; Deamido-NAD(+) pyrophosphorylase; Nicotinate mononucleotide adenylyltransferase; NaMN adenylyltransferase; | nadD; ybeN; b0639 JW0634; | NP_415172.1;YP_488930.1; | 213 | escherichia-coli |
| P18843 | NH(3)-dependent NAD(+) synthetase; EC 6.3.1.5; Nicotinamide adenine dinucleotide synthetase; NADS; Nitrogen regulatory protein; | nadE; efg ntrL; b1740 JW1729; | NP_416254.1;YP_490001.1; | 275 | escherichia-coli |
| P0A7B3 | NAD kinase; EC 2.7.1.23; ATP-dependent NAD kinase; | nadK; yfjB yfjE; b2615 JW2596; | NP_417105.1;YP_490837.1; | 292 | escherichia-coli |
| P27278 | Trifunctional NAD biosynthesis/regulator protein NadR; NmR-K; Nicotinamide-nucleotide adenylyltransferase; NRK; Nicotinamide riboside kinase; EC 2.7.1.22; RNK; Nicotinamide ribonucleotide adenylyltransferase; EC 2.7.7.1; NMNAT; NMN-AT; NMN adenylyltransfe盽?盾 | nadR; nadI; b4390 JW5800; | NP_418807.4;YP_492520.1; | 410 | escherichia-coli |
| P0AF18 | N-acetylglucosamine-6-phosphate deacetylase; EC 3.5.1.25; GlcNAc 6-P deacetylase; | nagA; b0677 JW0663; | NP_415203.1;YP_488957.1; | 382 | escherichia-coli |
| P0A759 | Glucosamine-6-phosphate deaminase; EC 3.5.99.6; GlcN6P deaminase; GNPDA; Glucosamine-6-phosphate isomerase; | nagB; glmD; b0678 JW0664; | NP_415204.1;YP_488958.1; | 266 | escherichia-coli |
| P0AF20 | N-acetylglucosamine repressor; | nagC; nagR; b0676 JW0662; | NP_415202.1;YP_488956.1; | 406 | escherichia-coli |
| P0AF24 | Ribonucleotide monophosphatase NagD; EC 3.1.3.5; | nagD; b0675 JW0661; | NP_415201.1;YP_488955.1; | 250 | escherichia-coli |
| P75959 | N-acetyl-D-glucosamine kinase; EC 2.7.1.59; GlcNAc kinase; | nagK; ycfX; b1119 JW1105; | NP_415637.1;YP_489387.1; | 303 | escherichia-coli |
| P75949 | Beta-hexosaminidase; EC 3.2.1.52; Beta-N-acetylhexosaminidase; N-acetyl-beta-glucosaminidase; | nagZ; ycfO; b1107 JW1093; | NP_415625.1;YP_489375.1; | 341 | escherichia-coli |
| P0A6L4 | N-acetylneuraminate lyase; NAL; Neu5Ac lyase; EC 4.1.3.3; N-acetylneuraminate pyruvate-lyase; N-acetylneuraminic acid aldolase; NALase; Sialate lyase; Sialic acid aldolase; Sialic acid lyase; | nanA; npl; b3225 JW3194; | NP_417692.1;YP_491409.1; | 297 | escherichia-coli |
| P69856 | Probable N-acetylneuraminic acid outer membrane channel protein NanC; NanR-regulated channel; Porin NanC; | nanC; yjhA; b4311 JW5778; | NP_418731.2;YP_492445.1; | 238 | escherichia-coli |
| P0A761 | Putative N-acetylmannosamine-6-phosphate 2-epimerase; EC 5.1.3.9; ManNAc-6-P epimerase; | nanE; yhcJ; b3223 JW3192; | NP_417690.1;YP_491407.1; | 229 | escherichia-coli |
| P45425 | N-acetylmannosamine kinase; EC 2.7.1.60; ManNAc kinase; N-acetyl-D-mannosamine kinase; | nanK; yhcI; b3222 JW5538; | NP_417689.4;YP_491406.1; | 291 | escherichia-coli |
| P39371 | N-acetylneuraminate epimerase; EC 5.1.3.24; N-acetylneuraminate mutarotase; Neu5Ac mutarotase; Sialic acid epimerase; | nanM; yjhT; b4310 JW5777; | NP_418730.4;YP_492444.1; | 368 | escherichia-coli |
| P0A8W0 | Transcriptional regulator NanR; | nanR; yhcK; b3226 JW3195; | NP_417693.3;YP_491410.1; | 263 | escherichia-coli |
