ExplorEnz: EC 1.3.1.111

Your query returned 1 entry. Printable version

1.3.1.111

Accepted name:

geranylgeranyl-bacteriochlorophyllide a reductase

Reaction:

bacteriochlorophyll a + 3 NADP⁺ = geranylgeranyl bacteriochlorophyllide a + 3 NADPH + 3 H⁺

For diagram of bacteriochlorophyl a biosynthesis, click here

Other name(s):

geranylgeranyl-bacteriopheophytin reductase; bchP (gene name)

Systematic name:

bacteriochlorophyll-a:NADP⁺ oxidoreductase (geranylgeranyl-reducing)

Comments:

The enzyme catalyses the successive reduction of the geranylgeraniol esterifying group to phytol, reducing three out of four double bonds, and transforming geranylgeranyl bacteriochlorophyllide a via dihydrogeranylgeranyl bacteriochlorophyllide a and tetrahydrogeranylgeranyl bacteriochlorophyllide a to bacteriochlorophyll a. The enzyme can also accept the pheophytin derivative geranylgeranyl bacteriopheophytin, converting it to bacteriopheophytin a.

Links to other databases:

BRENDA, EXPASY, KEGG, MetaCyc

References:

1.	Bollivar, D.W., Wang, S., Allen, J.P. and Bauer, C.E. Molecular genetic analysis of terminal steps in bacteriochlorophyll a biosynthesis: characterization of a Rhodobacter capsulatus strain that synthesizes geranylgeraniol-esterified bacteriochlorophyll a. Biochemistry 33 (1994) 12763–12768. [PMID: 7947681]
2.	Addlesee, H.A. and Hunter, C.N. Physical mapping and functional assignment of the geranylgeranyl-bacteriochlorophyll reductase gene, bchP, of Rhodobacter sphaeroides. J. Bacteriol. 181 (1999) 7248–7255. [PMID: 10572128]
3.	Addlesee, H.A. and Hunter, C.N. Rhodospirillum rubrum possesses a variant of the bchP gene, encoding geranylgeranyl-bacteriopheophytin reductase. J. Bacteriol. 184 (2002) 1578–1586. [DOI] [PMID: 11872709]
4.	Harada, J., Miyago, S., Mizoguchi, T., Azai, C., Inoue, K., Tamiaki, H. and Oh-oka, H. Accumulation of chlorophyllous pigments esterified with the geranylgeranyl group and photosynthetic competence in the CT2256-deleted mutant of the green sulfur bacterium Chlorobium tepidum. Photochem Photobiol Sci 7 (2008) 1179–1187. [DOI] [PMID: 18846281]

[EC 1.3.1.111 created 2016]