TY - JOUR
T1 - Cytochrome b559 and cyclic electron transfer within photosystem II
AU - Shinopoulos, Katherine E.
AU - Brudvig, Gary W.
N1 - Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.
PY - 2012/1
Y1 - 2012/1
N2 - Cytochrome b559 (Cyt b559), β-carotene (Car), and chlorophyll (Chl) cofactors participate in the secondary electron-transfer pathways in photosystem II (PSII), which are believed to protect PSII from photodamage under conditions in which the primary electron-donation pathway leading to water oxidation is inhibited. Among these cofactors, Cyt b 559 is preferentially photooxidized under conditions in which the primary electron-donation pathway is blocked. When Cyt b559 is preoxidized, the photooxidation of several of the 11 Car and 35 Chl molecules present per PSII is observed. In this review, the discovery of the secondary electron donors, their structures and electron-transfer properties, and progress in the characterization of the secondary electron-transfer pathways are discussed. This article is part of a Special Issue entitled: Photosystem II.
AB - Cytochrome b559 (Cyt b559), β-carotene (Car), and chlorophyll (Chl) cofactors participate in the secondary electron-transfer pathways in photosystem II (PSII), which are believed to protect PSII from photodamage under conditions in which the primary electron-donation pathway leading to water oxidation is inhibited. Among these cofactors, Cyt b 559 is preferentially photooxidized under conditions in which the primary electron-donation pathway is blocked. When Cyt b559 is preoxidized, the photooxidation of several of the 11 Car and 35 Chl molecules present per PSII is observed. In this review, the discovery of the secondary electron donors, their structures and electron-transfer properties, and progress in the characterization of the secondary electron-transfer pathways are discussed. This article is part of a Special Issue entitled: Photosystem II.
KW - Chlorophyll
KW - Cytochrome b
KW - Electron transfer pathway
KW - Photosystem II
KW - β-Carotene
UR - http://www.scopus.com/inward/record.url?scp=82755160818&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=82755160818&partnerID=8YFLogxK
U2 - 10.1016/j.bbabio.2011.08.002
DO - 10.1016/j.bbabio.2011.08.002
M3 - Review article
C2 - 21864501
AN - SCOPUS:82755160818
VL - 1817
SP - 66
EP - 75
JO - Biochimica et Biophysica Acta - Bioenergetics
JF - Biochimica et Biophysica Acta - Bioenergetics
SN - 0005-2728
IS - 1
ER -