Characterization of an Arabidopsis thaliana mutant with impaired psbO, one of two genes encoding extrinsic 33-kDa proteins in photosystem II.
A 33-kDa protein component of the oxygen-evolving complex in photosystem II is essential for photosynthesis, and it has been believed that mutants with deletion of this 33-kDa protein are not found in higher plants. We report here the first isolation of an Arabidopsis thaliana mutant with a defect in one of the genes for the 33-kDa proteins, psbO, and an intact gene (psbO2). This mutant showed considerable growth retardation, suggesting that there is a functional difference between psbO and psbO2.
Division of Integrated Life Sciences, Graduate School of Biostudies, Kyoto University, 606-8502, Kyoto, Japan.
Reiko
R
Murakami
Kentaro
K
Ifuku
Atsushi
A
Takabayashi
Toshiharu
T
Shikanai
Tsuyoshi
T
Endo
Fumihiko
F
Sato
D000595:Amino Acid Sequence; D017360:Arabidopsis / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism; D002734:Chlorophyll / Q000737:chemistry / Q000378:metabolism*; D019143:Evolution, Molecular; D005453:Fluorescence; D045342:Light-Harvesting Protein Complexes; D008969:Molecular Sequence Data; D008970:Molecular Weight; D009154:Mutation; D010100:Oxygen / Q000378:metabolism*; D045322:Photosynthetic Reaction Center Complex Proteins / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism*; D045332:Photosystem II Protein Complex; D017386:Sequence Homology, Amino Acid
D045342:Light-Harvesting Protein Complexes; D045322:Photosynthetic Reaction Center Complex Proteins; D045332:Photosystem II Protein Complex; C064388:oxygen-evolving complex, 33 kDa protein; D002734:Chlorophyll; D010100:Oxygen