| B2G8G3 | METK_LACRJ | Lactobacillus reuteri (strain JCM 1112) | metK LAR_1229 | Detail |
| Q47JN4 | METK_DECAR | Dechloromonas aromatica (strain RCB) | metK Daro_0188 | Detail |
| Q53479 | IDSA_METTM | Methanothermobacter marburgensis (strain ATCC BAA-927 / DSM 2133 / JCM 14651 / NBRC 100331 / OCM 82 / Marburg) (Methanobacterium thermoautotrophicum) | idsA MTBMA_c05390 | Detail |
| Q12FG9 | METK_POLSJ | Polaromonas sp. (strain JS666 / ATCC BAA-500) | metK Bpro_0767 | Detail |
| Q7M7V7 | ISPT_WOLSU | Wolinella succinogenes (strain ATCC 29543 / DSM 1740 / LMG 7466 / NCTC 11488 / FDC 602W) (Vibrio succinogenes) | uppS WS2058 | Detail |
| Q9LUT2 | METK4_ARATH | Arabidopsis thaliana (Mouse-ear cress) | METK4 MTO3 SAMS3 At3g17390 MGD8.23 | Detail |
| Q2IZR2 | METK_RHOP2 | Rhodopseudomonas palustris (strain HaA2) | metK RPB_1588 | Detail |
| Q13AQ6 | METK_RHOPS | Rhodopseudomonas palustris (strain BisB5) | metK RPD_1596 | Detail |
| B3H1W3 | METK_ACTP7 | Actinobacillus pleuropneumoniae serotype 7 (strain AP76) | metK APP7_1138 | Detail |
| A3M4V2 | METK_ACIBT | Acinetobacter baumannii (strain ATCC 17978 / CIP 53.77 / LMG 1025 / NCDC KC755 / 5377) | metK A1S_1519 | Detail |