| A6UWP3 | PYRB_META3 | Methanococcus aeolicus (strain ATCC BAA-1280 / DSM 17508 / OCM 812 / Nankai-3) | pyrB Maeo_1339 | Detail |
| A4G0R3 | PYRB_METM5 | Methanococcus maripaludis (strain C5 / ATCC BAA-1333) | pyrB MmarC5_1750 | Detail |
| A6UQU0 | PYRB_METVS | Methanococcus vannielii (strain ATCC 35089 / DSM 1224 / JCM 13029 / OCM 148 / SB) | pyrB Mevan_0959 | Detail |
| A5V3V4 | PYRB_SPHWW | Sphingomonas wittichii (strain RW1 / DSM 6014 / JCM 10273) | pyrB Swit_0602 | Detail |
| Q5M5F8 | PYRB_STRT2 | Streptococcus thermophilus (strain ATCC BAA-250 / LMG 18311) | pyrB stu0525 | Detail |
| A2BUL3 | PYRB_PROM5 | Prochlorococcus marinus (strain MIT 9515) | pyrB P9515_02651 | Detail |
| Q7WF77 | PYRB_BORBR | Bordetella bronchiseptica (strain ATCC BAA-588 / NCTC 13252 / RB50) (Alcaligenes bronchisepticus) | pyrB BB4403 | Detail |
| A9A2Q5 | PYRB_NITMS | Nitrosopumilus maritimus (strain SCM1) | pyrB Nmar_1686 | Detail |
| A9MBN9 | PYRB_BRUC2 | Brucella canis (strain ATCC 23365 / NCTC 10854) | pyrB BCAN_B0600 | Detail |
| Q3JE55 | PYRB_NITOC | Nitrosococcus oceani (strain ATCC 19707 / BCRC 17464 / NCIMB 11848 / C-107) | pyrB Noc_0365 | Detail |