| [A] Metallosphaera sedula (strain ATCC 51363 / DSM 5348) | METS501928 | A4YI53 | Orotate phosphoribosyltransferase |
| [A] Caldivirga maquilingensis (strain DSMZ 13496 / IC-167) | CALMQ00553 | A8MCA2 | Orotate phosphoribosyltransferase |
| [A] Haloarcula marismortui | HALMA02235 | Q5UZH9 | orotate phosphoribosyltransferase |
| [A] Halorubrum lacusprofundi (strain ATCC 49239 / DSM 5036 / JCM 8891 / ACAM 34) | HALLT00576 | B9LTQ2 | Orotate phosphoribosyltransferase |
| [A] Methanobrevibacter smithii (strain PS / ATCC 35061 / DSM 861) | METS300812 | A5ULE8 | Orotate phosphoribosyltransferase, PyrE |
| [A] Methanococcus vannielii (strain SB / ATCC 35089 / DSM 1224) | METVS00789 | A6UQD5 | Orotate phosphoribosyltransferase |
| [A] Methanoregula boonei (strain 6A8) | METB600835 | A7I6J8 | Orotate phosphoribosyltransferase |
| [A] Methanocorpusculum labreanum (strain ATCC 43576 / DSM 4855 / Z) | METLZ00315 | PYRE_METLZ | Hypothetical protein |
| [A] Methanosphaerula palustris (strain ATCC BAA-1556 / DSM 19958 / E1-9c) | METPE02246 | B8GEE1 | Orotate phosphoribosyltransferase |
| [A] Picrophilus torridus | PICTO00208 | PYRE_PICTO | Orotate phosphoribosyltransferase |
| [A] Thermoplasma acidophilum | THEAC00055 | PYRE_THEAC | Orotate phosphoribosyltransferase |
| [A] Thermoplasma volcanium | THEVO00012 | PYRE_THEVO | Orotate phosphoribosyltransferase |
| [A] Korarchaeum cryptofilum (strain OPF8) | KORCO00155 | B1L386 | Orotate phosphoribosyltransferase |
| [B] Frankia alni (strain ACN14a) | FRAAA01023 | Q0RRU5 | Orotate phosphoribosyltransferase (OPRT) (OPRTase) Evidence 2b : Function of strongly homologous gene; PubMedId : 6207018; Product type e : enzyme |
| [B] Frankia sp. (strain CcI3) | FRASC00537 | Q2JFJ9 | orotate phosphoribosyltransferase |
| [B] Frankia sp. (strain EAN1pec) | FRASN05890 | A8LC78 | Orotate phosphoribosyltransferase |
| [B] Nocardioides sp. (strain BAA-499 / JS614) | NOCSJ04277 | PYRE_NOCSJ | Orotate phosphoribosyltransferase |
| [B] Rubrobacter xylanophilus (strain DSM 9941 / NBRC 16129) | RUBXD02241 | Q1ATP7 | orotate phosphoribosyltransferase TIGRFAM: orotate phosphoribosyltransferase PFAM: phosphoribosyltransferase KEGG: fra:Francci3_0559 orotate phosphoribosyltransferase |
| [B] Acaryochloris marina (strain MBIC 11017) | ACAM100355 | B0CAX6 | Orotate phosphoribosyltransferase |
| [B] Bacillus cereus (strain AH187) | BACC700620 | B7HVC7 | Orotate phosphoribosyltransferase |
| [B] Bacillus cereus (strain ATCC 10987) | BACC100679 | Q73DM2 | identified by match to protein family HMM PF00156; match to protein family HMM TIGR00336 orotate phosphoribosyltransferase domani protein |
| [B] Bacillus cereus (strain ZK) | BACCZ00519 | Q63G24 | orotate phosphoribosyltransferase |
| [B] Bacillus thuringiensis (subsp. konkukian) | BACHK00518 | Q6HNJ2 | possible orotate phosphoribosyltransferase |
| [B] Bdellovibrio bacteriovorus | BDEBA00891 | Q6MP84 | InterPro: Phosphoribosyl transferase hypothetical protein |
| [B] Leptospira interrogans | LEPIN02962 | Q8F1Z0 | Orotate phosphoribosyltransferase 1 |
| [B] Leptospira interrogans (serogroup Icterohaemorrhagiae / serovar Copenhageni) | LEPIC01040 | Q72TE5 | identified by sequence similarity; putative; ORF located using Blastx/Glimmer uridine 5-monophosphate synthase |