Magnesium chelatase ChlI domain (IPR000523)

Short name: Mg_chelatse_chII_dom

Overlapping homologous superfamilies

Domain relationships



This domain can be found in the magnesium chelatase ChlI subunit. It can also be found in the competence protein ComM from Haemophilus influenzae and Lon proteases from archaea. The function of this domain is not clear.

Magnesium-chelatase is a three-component enzyme that catalyses the insertion of Mg2+ into protoporphyrin IX. This is the first unique step in the synthesis of (bacterio)chlorophyll. As a result, it is thought that Mg-chelatase has an important role in channeling intermediates into the (bacterio)chlorophyll branch in response to conditions suitable for photosynthetic growth. ChlI and BchD have molecular weights between 38-42 kDa [PMID: 9359397, PMID: 9457877].

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.