Incomplete Hydrogenation by Geranylgeranyl Reductase from a Proteobacterial Phototroph Halorhodospira halochloris, Resulting in the Production of Bacteriochlorophyll with a Tetrahydrogeranylgeranyl Tail

Author:

Tsukatani Yusuke1ORCID,Harada Jiro2,Kurosawa Kanako1,Tanaka Keiko1,Tamiaki Hitoshi3ORCID

Affiliation:

1. Institute for Extra-Cutting-Edge Science and Technology Avant-Garde Research (X-star), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Kanagawa, Japan

2. Department of Medical Biochemistry, Kurume University School of Medicine, Fukuoka, Japan

3. Graduate School of Life Sciences, Ritsumeikan University, Shiga, Japan

Abstract

Geranylgeranyl reductase (GGR) catalyzes the hydrogenation of carbon–carbon double bonds of unsaturated hydrocarbons of isoprenoid compounds, including α-tocopherols, phylloquinone, archaeal cell membranes, and (bacterio)chlorophyll pigments in various organisms. GGRs in photosynthetic organisms, including anoxygenic phototrophic bacteria, cyanobacteria, and plants perform successive triple hydrogenation to produce chlorophylls and bacteriochlorophylls with a phytyl chain.

Funder

MEXT | Japan Society for the Promotion of Science

Astrobiology Center, Japan

Publisher

American Society for Microbiology

Subject

Molecular Biology,Microbiology

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