The Major Route for Chlorophyll Synthesis Includes [3,8-divinyl]-chlorophyllide a Reduction in Arabidopsis thaliana | Zendy

Nozomi Nagata | Zendy; Ryouichi Tanaka | Zendy; Akihiro Tanaka | Zendy

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The Major Route for Chlorophyll Synthesis Includes [3,8-divinyl]-chlorophyllide a Reduction in Arabidopsis thaliana

Author(s) -

Nozomi Nagata,

Ryouichi Tanaka,

Akihiro Tanaka

Publication year - 2007

Publication title -

plant and cell physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.975

H-Index - 152

eISSN - 1471-9053

pISSN - 0032-0781

DOI - 10.1093/pcp/pcm153

Subject(s) - protochlorophyllide , etiolation , biosynthesis , arabidopsis thaliana , chlorophyll , substrate (aquarium) , enzyme , chemistry , reductase , biochemistry , in vivo , biology , gene , mutant , organic chemistry , ecology , microbiology and biotechnology

In most reviews on Chl biosynthesis, Chl is described as being synthesized via the route involving the reduction of [3,8-divinyl]-protochlorophyllide a. However, the possibility remains that the conversion of the divinyl form of the Chl intermediate to its monovinyl form takes place at other enzymatic steps. To determine the actual route of Chl biosynthesis, we examined the substrate specificity of the formerly named [3,8-divinyl]-protochlorophyllide a 8-vinyl reductase (DVR) in vitro. In addition, we investigated the accumulation of various Chl intermediates in etiolated seedlings in vivo. Collectively, these studies indicate that [3,8-divinyl]-chlorophyllide a is the major substrate of DVR.

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