| [B] Frankia sp. (strain CcI3) | FRASC03278 | QUEF_FRASC | GTP cyclohydrolase I |
| [B] Sulfurihydrogenibium sp. (strain YO3AOP1) | SULSY00815 | B2V950 | 7-cyano-7-deazaguanine reductase |
| [B] Acaryochloris marina (strain MBIC 11017) | ACAM104127 | QUEF_ACAM1 | GTP cyclohydrolase I |
| [B] Cyanothece (strain ATCC 51142) | CYAA503280 | B1WY90 | Putative GTP cyclohydrolase I |
| [B] Synechococcus sp. (strain ATCC 27264 / PCC 7002 / PR-6) | SYNP201536 | B1XNM9 | GTP cyclohydrolase I subfamily |
| [B] Thermosynechococcus elongatus (strain BP-1) | THEEB00217 | QUEF_THEEB | NADPH-dependent 7-cyano-7-deazaguanine reductase |
| [B] Anabaena variabilis (strain ATCC 29413 / PCC 7937) | ANAVT04330 | QUEF_ANAVT | GTP cyclohydrolase I |
| [B] Anabaena sp. (strain PCC 7120) | ANASP01149 | QUEF_ANASP | NADPH-dependent 7-cyano-7-deazaguanine reductase |
| [B] Nostoc punctiforme (strain ATCC 29133 / PCC 73102) | NOSP705325 | B2ITS9 | GTP cyclohydrolase I |
| [B] Anaerocellum thermophilum (strain DSM 6725 / Z-1320) | ANATD02524 | QUEF_ANATD | 7-cyano-7-deazaguanine reductase |
| [B] Caldicellulosiruptor saccharolyticus (strain ATCC 43494 / DSM 8903) | CALS800445 | A4XGU8 | GTP cyclohydrolase I |
| [B] Thermoanaerobacter pseudethanolicus (strain ATCC 33223 / 39E) | THEP301372 | QUEF_THEP3 | GTP cyclohydrolase I |
| [B] Thermoanaerobacter sp. (strain X514) | THEPX02042 | QUEF_THEPX | GTP cyclohydrolase I |
| [B] Thermoanaerobacter tengcongensis | THETN01416 | QUEF_THETN | Best Blastp hit = gi|10039634|gb|AAG12198.1|AF287481_3 (AF287481) Orf117 [Chlorobium tepidum], score 117, E-value 5.00E-26 Enzyme related to GTP cyclohydrolase I |
| [B] Rhodopirellula baltica | RHOBA01396 | QUEF_RHOBA | best DB hits: BLAST: gb:AAG12198.1; AF287481_3 (AF287481) Orf117 [Chlorobium tepidum]; E=3e-32 pir:D69868; conserved hypothetical protein ykvM - Bacillus subtilis; E=6e-24 ddbj:BAB05960.1; (AP001514) BH2241~unknown conserved protein; E=8e-24 COG: BS_ykvM; COG0780 Enzyme related to GTP cyclohydrolase I; E=6e-25 conserved hypothetical protein-putative GTP cyclohydrolase I |
| [B] Methylibium petroleiphilum (strain PM1) | METPP01770 | A2SGS9 | GTP cyclohydrolase I-related enzyme |
| [B] Alkalilimnicola ehrlichei (strain MLHE-1) | ALHEH00672 | QUEF_ALHEH | GTP cyclohydrolase I |