Article
Aromatic structure of tyrosine-92 in the extrinsic PsbU protein of red algal photosystem II is important for its functioning.
FEBS letters - 13 Nov 2007
Okumura Akinori, Sano Masanori, Suzuki Takehiro, Tanaka Hiroyasu, Nagao Ryo, Nakazato Katsuyoshi, Iwai Masako, Adachi Hideyuki, Shen Jian-Ren, Enami Isao
Abstract excerpt
PsbU is one of the extrinsic proteins in red algal Photosystem II (PSII) and functions to optimize the availability of Ca(2+) and Cl(-) cofactors for water oxidation. To determine the functional residue of PsbU, we constructed various PsbU mutants from a red alga Cyanidium caldarium and reconstituted these mutants with the red algal PSII. The results revealed that Tyr-92 of PsbU, especially its aromatic ring, was...
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