Is PsbS the site of non-photochemical quenching in photosynthesis?
The PsbS protein of photosystem II functions in the regulation of photosynthetic light harvesting. Along with a low thylakoid lumen pH and the presence of de-epoxidized xanthophylls, PsbS is necessary for photoprotective thermal dissipation (qE) of excess absorbed light energy in plants, measured as non-photochemical quenching of chlorophyll fluorescence. What is known about PsbS in relation to the hypothesis that this protein is the site of qE is reviewed here.
Niyogi
Krishna K
KK
Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720-3102, USA. niyogi@nature.berkeley.edu
Li
Xiao-Ping
XP
Rosenberg
Vanessa
V
Jung
Hou-Sung
HS
D000595:Amino Acid Sequence; D056890:Eukaryota; D006863:Hydrogen-Ion Concentration; D008027:Light; D008969:Molecular Sequence Data; D010788:Photosynthesis / Q000502:physiology*; D045322:Photosynthetic Reaction Center Complex Proteins / Q000737:chemistry / Q000502:physiology*; D045332:Photosystem II Protein Complex / Q000737:chemistry / Q000502:physiology*; D010940:Plant Proteins / Q000737:chemistry / Q000502:physiology*; D010944:Plants; D020524:Thylakoids / Q000737:chemistry / Q000502:physiology
D045322:Photosynthetic Reaction Center Complex Proteins; D045332:Photosystem II Protein Complex; D010940:Plant Proteins