Magnesium chelatase.

Competence protein comM, putative

magnesium-protoporphyrin O-methyltransferase BchH subunit (RefSeq)

magnesium chelatase subunit BchD (RefSeq)

Mg chelatase subunit Bchl, participate to introduce Mg in bacteriochlorophyl with BchH and BchD (RefSeq)