224 Magnesium-protoporphyrin IX methyltransferase MPSDYAEIRNRVEHYFDRTATRAWARLTTADEKVSKVRQTVREGRDTMRAVMLSRLPDDLTGCRVMDAGCGTGLTTVELARRGADVVAVDISPQLIDIAKDRLPPELRGKVSFHVGDMADPALGQFDYVVAMDSLIYYRAPDIGRVLTELGKRTHSAIVFTVAPKTAFLMAFWWLGKLFPRSNRSPVMIPHALDKLQRHAGDSLIKIDRVARGFYISECLEYRP bchM Converts Mg-protoporphyrin IX to Mg-protoporphyrin IX methylester using S-adenosyl-L-methionine as a cofactor. Magnesium-protoporphyrin O-methyltransferase BCHM_RHOCA