A consideration of the organization of chloroplast photosystem I

✍ Scribed by R. Malkin

• Book ID: 104627909
• Publisher: Springer
• Year: 1986
• Tongue: English
• Weight: 220 KB
• Volume: 10
• Category: Article
• ISSN: 0166-8595
• DOI: 10.1007/bf00118283

✦ Synopsis

Procedures that allow the fractionation of a native Photosystem I complex (PSI-200) into several chlorophyll-containing complexes are now available. Two complexes, each containing -500/0 of the total chlorophyll of the photosystem, can be isolated. One complex contains both chlorophyll a and b and serves as antenna complex for the reaction center while the reac-tion center complex contains 100 Chl a molecules per P700 and has 7 different polypeptides.

Only two of the-latter (62 and 58 kDa) contain chlorophyll a and these can be isolated as the photochemically active CPI compleX. Based on these fractionation methods, a model that describes the overall organization of the chlorophyll in Photosystem is presented.