PSBO SAMPLES A COMPLEX CONFORMATIONAL LANDSCAPE WHICH IS REGULATED BY PHOTOSYSTEM II
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He, Jiayuan
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Abstract
The maintenance of aerobic heterotrophic life relies on the photosynthetic oxygen production in the PSII reaction center. This reaction is intrinsically important in biological chemistry. Moreover, the efficiency of transferring solar energy to chemical energy makes PSII an excellent candidate for modeling the design and development of sustainable and biomimetic forms of artificial energy. PSII is a multisubunit transmembrane complex. It consists of several membrane-spanning helices and three main extrinsic subunits. PsbO is proposed to be an IDP when isolated free in solution. Its secondary structure showed significant change after bound to PSII, which is referred as templating effect. MS, CD and UVRR are used in my study to locate the residues that respond to the regulation of PSII. The current work provides new structural/conformational information concerning an indispensable part of the photosynthetic oxygen production reaction, PsbO, an extrinsic subunit of PSII.
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2020-07-27
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