Effect of Phosphorylation on the Production of 7900 and 9300 Fragments of D1 Protein

doi:10.3969/j.issn.0251-0790.2012.07.024

Chem. J. Chinese Universities ›› 2012, Vol. 33 ›› Issue (07): 1493.doi: 10.3969/j.issn.0251-0790.2012.07.024

• Biological Chemistry • Previous Articles Next Articles

Effect of Phosphorylation on the Production of 7900 and 9300 Fragments of D1 Protein

CHEN Liang-Bing^1,2, DU Li-Bo¹, TIAN Qiu¹, JIA Hong-Ying¹, GAO Yan-Li^1,2, LIU Yang¹

1. State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
2. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China

Received:2011-10-12 Online:2012-07-10 Published:2012-07-10

Abstract

Abstract: So far it is unclear whether the phosphorylation protects D1 protein by decreasing the production of 7900 and 9300 fragments of this protein, and reactive oxygen species affect the production of these two fragments in phosphorylation condition. In this study, 7900 and 9300 fragments of D1 protein were detected in non-phosphorylated and phosphorylated photosystem Ⅱ(PSⅡ) membranes using Western blotting technique. It was found that reactive oxygen species including superoxide anion, hydrogen peroxide and hydroxyl radical were involved in the production of 7900 and 9300 fragments of D1 protein in both the non-phosphorylated and phosphorylated forms. And it was also found that phosphorylation could partially inhibit the production of 7900 and 9300 fragments of D1 protein, which played a protective role in D1 protein.

Key words: D1 protein, Phosphorylation, Electron spin resonance(ESR), Free radical, Photosystem Ⅱ

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CHEN Liang-Bing, DU Li-Bo, TIAN Qiu, JIA Hong-Ying, GAO Yan-Li, LIU Yang. Effect of Phosphorylation on the Production of 7900 and 9300 Fragments of D1 Protein[J]. Chem. J. Chinese Universities, 2012, 33(07): 1493.

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Effect of Phosphorylation on the Production of 7900 and 9300 Fragments of D1 Protein

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