Photosynthesis Research

, Volume 24, Issue 1, pp 1–13 | Cite as

The structure and function of CPa-1 and CPa-2 in Photosystem II

  • Terry M. Bricker


This review presents a summary of recent investigations examining the structure and function of the chlorophyll-proteins CPa-1 (CP47) and CPa-2 (CP43). Comparisons of the derived amino acid sequences of these proteins suggest sites for chlorophyll binding and for interactions between these chlorophyll-proteins and other Photosystem II components. Hydropathy plot analysis of these proteins allows the formulation fo testable hypotheses concerning their topology and orientation within the photosynthetic membrane. The role of these chlorophyll-proteins as interior light-harvesting chlorophyll-a antennae for Photosystem II is examined and other possible additional roles for these important Photosystem II components are discussed.

Key words

CPa-1 CPa-2 CP47 CP43 Photosystem II 


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Copyright information

© Kluwer Academic Publishers 1990

Authors and Affiliations

  • Terry M. Bricker
    • 1
    • 2
  1. 1.Department of BotanyLouisiana State UniversityBaton RougeUSA
  2. 2.Department of BiochemistryLouisiana State UniversityBaton RougeUSA

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