Functional Analysis of Two PsbP-Like (PPL) Proteins in Arabidopsis thaliana

  • Seiko Ishihara
  • Atsushi Takabayashi
  • Tsuyoshi Endo
  • Kentaro Ifuku
  • Fumihiko Sato
Conference paper

Abstract

PsbP is an extrinsic subunit of photosystem II (PSII) and optimizes the water- splitting reaction in higher plants in vivo. In addition to PsbP, recent genomic and proteomic studies have demonstrated the existence of many PsbP homologs in the chloroplast of higher plants; however, their molecular functions have not been investigated at all. In order to establish a unified view about the PsbP family in higher plants, PsbP homologs in a model plant Arabidopsis thaliana were classified into two PsbP-like (PPL) proteins and six PsbP domain (PPD) proteins by amino-acid sequence similarity. Their molecular functions, especially those of two PPLs, are discussed in terms of mRNA expression profiles in the public microarray database.

Keywords

Arabidopsis photosystem II PsbP PsbP-like (PPL) protein PsbP domain (PPD) protein 

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Copyright information

© Springer Science + Business Media, B.V. 2008

Authors and Affiliations

  • Seiko Ishihara
    • 1
  • Atsushi Takabayashi
    • 1
  • Tsuyoshi Endo
    • 1
  • Kentaro Ifuku
    • 1
  • Fumihiko Sato
    • 1
  1. 1.Graduate School of BiostudiesKyoto UniversityKyotoJapan

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