| ID | Abbrev | Functional role |
| 1 | GTPCH2 | GTP cyclohydrolase II (EC 3.5.4.25) |
| 2 | Pyr_D | Diaminohydroxyphosphoribosylaminopyrimidine deaminase (EC 3.5.4.26) |
| 3 | Pyr_De | Pyrimidine deaminase eukaryotic (EC 3.5.4.26) |
| 4 | Pyr_Da | Pyrimidine deaminase archaeal predicted (EC 3.5.4.26) |
| 5 | Pyr_R | 5-amino-6-(5-phosphoribosylamino)uracil reductase (EC 1.1.1.193) |
| 6 | Pyr_R(2) | Pyr_R(2) |
| 7 | Pyr_P | 5-Amino-6-(5'-phosphoribitylamino)uracil phosphatase |
| 8 | DHBPS | 3,4-dihydroxy-2-butanone 4-phosphate synthase |
| 9 | DMRS | 6,7-dimethyl-8-ribityllumazine synthase (EC 2.5.1.9) |
| 10 | RSA | Riboflavin synthase alpha chain (EC 2.5.1.9) |
| 11 | RSAa | Riboflavin synthase archaeal (EC 2.5.1.9) |
| 12 | YpaA | Riboflavin transporter YpaA |
| 13 | RK | Riboflavin kinase (EC 2.7.1.26) |
| 14 | FMNAT | FMN adenylyltransferase (EC 2.7.7.2) |
| 15 | FMNAT2 | FMN adenylyltransferase |
| 16 | GTPCH3 | GTP cyclohydrolase III archaeal hypothesized |
| 17 | NTPPP | Nucleotide triphosphate pyrophosphatase (EC 3.6.1.19) |
| ID | Abbrev | Description |
| 1 | GTP | Guanosine triphosphate |
| 2 | I | 2,5-Diamino-6-ribosylamino-4(3H)-pyrimidinone 5'-phosphate |
| 3 | II | 5-Amino-6-ribosylamino-2,4(1H,3H)-pyrimidinedione 5'-phosphate |
| 4 | III | 5-Amino-6-ribitylamino-2,4(1H,3H)-pyrimidinedione 5'-phosphate |
| 5 | IV | 5-Amino-6-ribitylamino-2,4(1H,3H)-pyrimidinedione |
| 6 | V | 6,7-Dimethyl-8-ribityl-lumazine |
| 7 | VI | 2,5-Diamino-6-ribosylamino-4(3H)-pyrimidinone 5-triphosphatre |
| 8 | VII | L-3,4-Dihydroxy-2-butanone 4-phosphate |
| 9 | B2 | Riboflavin |
| 10 | FMN | Riboflavin-5-phosphate Flavin mononucleotide |
| 11 | FAD | Flavin adenine dinucleotide |
| 12 | VIII | 2,5-Diamino-6-ribitylamino-4(3H)-pyrimidinone 5-phosphate |
| 13 | IX | 2,5-Diamino-6-ribosylamino-4(3H)-pyrimidinone 5-triphosphate |
