| P37692 | RFAF_ECOLI | Escherichia coli (strain K12) | rfaF waaF b3620 JW3595 | Detail |
| Q55CL6 | MP2K1_DICDI | Dictyostelium discoideum (Slime mold) | mekA MEK1 DDB_G0269152 | Detail |
| Q05116 | MP2K1_XENLA | Xenopus laevis (African clawed frog) | map2k1 | Detail |
| P39746 | MP2K3_XENLA | Xenopus laevis (African clawed frog) | map2k3 mek3 | Detail |
| Q326Z4 | OSPG_SHIDS | Shigella dysenteriae serotype 1 (strain Sd197) | ospG SDY_P101 | Detail |
| Q8TEQ8 | PIGO_HUMAN | Homo sapiens (Human) | PIGO UNQ632/PRO1249 | Detail |
| P47809 | MP2K4_MOUSE | Mus musculus (Mouse) | Map2k4 Jnkk1 Mek4 Mkk4 Prkmk4 Sek1 Serk1 Skk1 | Detail |
| O94235 | MPH1L_SCHPO | Schizosaccharomyces pombe (strain 972 / ATCC 24843) (Fission yeast) | mph1 SPBC106.01 SPBC1271.16c SPBC243.01 | Detail |
| G5EDF7 | SEK1_CAEEL | Caenorhabditis elegans | sek-1 R03G5.2 | Detail |
| Q4KJL4 | UBIB_PSEF5 | Pseudomonas fluorescens (strain ATCC BAA-477 / NRRL B-23932 / Pf-5) | ubiB PFL_0425 | Detail |