HMM Summary Page: TIGR02030

Functionmagnesium chelatase ATPase subunit I
Gene SymbolbchI
Trusted Cutoff466.95
Domain Trusted Cutoff466.95
Noise Cutoff458.15
Domain Noise Cutoff458.15
Isology Typeequivalog
EC Number6.6.1.1
HMM Length337
Mainrole CategoryBiosynthesis of cofactors, prosthetic groups, and carriers
Subrole CategoryChlorophyll and bacteriochlorphyll
Gene Ontology TermGO:0010007: magnesium chelatase complex cellular_component
GO:0015995: chlorophyll biosynthetic process biological_process
GO:0016851: magnesium chelatase activity molecular_function
GO:0016887: ATPase activity molecular_function
AuthorSelengut J
Entry DateOct 20 2003 1:25PM
Last ModifiedFeb 14 2011 3:27PM
CommentThis HMM represents one of two ATPase subunits of the trimeric magnesium chelatase responsible for insertion of magnesium ion into protoporphyrin IX. This is an essential step in the biosynthesis of both chlorophyll and bacteriochlorophyll [1]. This subunit is found in green plants, photosynthetic algae, cyanobacteria and other photosynthetic bacteria.
ReferencesRN [1] RM PMID: 7892204 RT Magnesium-protoporphyrin chelatase of Rhodobacter sphaeroides: reconstitution of activity by combining the products of the bchH, -I, and -D genes expressed in Escherichia coli. RA Gibson LC, Willows RD, Kannangara CG, von Wettstein D, Hunter CN. RL Proc Natl Acad Sci U S A. 1995 Mar 14;92(6):1941-4.
Genome PropertyGenProp0144: chlorophyllide a biosynthesis from protoporphyrin IX (HMM)