Untangling the sequence of events during the S2 → S3 transition in photosystem II and implications for the water oxidation mechanism.
Ibrahim M, Fransson T, Chatterjee R, Cheah MH, Hussein R, Lassalle L, Sutherlin KD, Young ID, Fuller FD, Gul S, Kim IS, Simon PS, de Lichtenberg C, Chernev P, Bogacz I, Pham CC, Orville AM, Saichek N, Northen T, Batyuk A, Carbajo S, Alonso-Mori R, Tono K, Owada S, Bhowmick A, Bolotovsky R, Mendez D, Moriarty NW, Holton JM, Dobbek H, Brewster AS, Adams PD, Sauter NK, Bergmann U, Zouni A, Messinger J, Kern J, Yachandra VK, Yano J.
Ibrahim M, et al.
Proc Natl Acad Sci U S A. 2020 Jun 9;117(23):12624-12635. doi: 10.1073/pnas.2000529117. Epub 2020 May 20.
Proc Natl Acad Sci U S A. 2020.
PMID: 32434915
Free PMC article.
At the electron acceptor site, changes due to the two-electron redox chemistry at the quinones, Q(A) and Q(B), are observed. At the donor site, tyrosine Y(Z) and His190 H-bonded to it move by 50 s after the second flash, and Glu189 moves away from Ca. This is followed by M …
At the electron acceptor site, changes due to the two-electron redox chemistry at the quinones, Q(A) and Q(B), are observed. At the donor si …