| B6YRP0 | METK_AZOPC | Azobacteroides pseudotrichonymphae genomovar. CFP2 | metK CFPG_599 | Detail |
| O60198 | METK_SCHPO | Schizosaccharomyces pombe (strain 972 / ATCC 24843) (Fission yeast) | sam1 SPBC14F5.05c | Detail |
| Q31KC6 | METK_SYNE7 | Synechococcus elongatus (strain PCC 7942) (Anacystis nidulans R2) | metK Synpcc7942_2463 | Detail |
| A0LF65 | METK_SYNFM | Syntrophobacter fumaroxidans (strain DSM 10017 / MPOB) | metK Sfum_0367 | Detail |
| A5GR07 | METK_SYNR3 | Synechococcus sp. (strain RCC307) | metK SynRCC307_0413 | Detail |
| C3P803 | FOSB1_BACAA | Bacillus anthracis (strain A0248) | fosB1 BAA_2109 | Detail |
| C5A4B7 | METK_THEGJ | Thermococcus gammatolerans (strain DSM 15229 / JCM 11827 / EJ3) | mat TGAM_0577 | Detail |
| A7Z7Y9 | METK_BACVZ | Bacillus velezensis (strain DSM 23117 / BGSC 10A6 / FZB42) (Bacillus amyloliquefaciens subsp. plantarum) | metK RBAM_027570 | Detail |
| Q8GTL5 | METK_CARPA | Carica papaya (Papaya) | SAMS | Detail |
| B7GUQ1 | METK_BIFLS | Bifidobacterium longum subsp. infantis (strain ATCC 15697 / DSM 20088 / JCM 1222 / NCTC 11817 / S12) | metK Blon_2136 BLIJ_2213 | Detail |