| UniProtKB/Swiss-Prot |
| P76558, MAO2_ECOLI; | P43837, MAO2_HAEIN; | O30808, MAO2_RHIME; |
| Q9ZDF6, MAO2_RICPR; | Q9ZFV8, MAO2_SALTY; | P36444, MAOC_FLAPR; |
| P22178, MAOC_FLATR; | P16243, MAOC_MAIZE; | P43279, MAOC_ORYSJ; |
| P37222, MAOC_SOLLC; | P78715, MAOH_NEOFR; | Q16798, MAON_HUMAN; |
| Q8BMF3, MAON_MOUSE; | P28227, MAOX_ANAPL; | Q92060, MAOX_CHICK; |
| P40927, MAOX_COLLI; | Q6TU48, MAOX_DICDI; | P48163, MAOX_HUMAN; |
| P37223, MAOX_MESCR; | P06801, MAOX_MOUSE; | P12628, MAOX_PHAVU; |
| Q29558, MAOX_PIG; | P84539, MAOX_POPEU; | P34105, MAOX_POPTR; |
| P13697, MAOX_RAT; | P51615, MAOX_VITVI; |
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