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Oxidation of Q A − and of Q B − of photosynthetic reaction centers by an artificial acceptor
Author(s) -
Agalidis Ileana,
Velthuys Bruno R.
Publication year - 1986
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(86)80339-8
Subject(s) - photosynthetic reaction centre , acceptor , photosystem ii , photosynthesis , quinone , chemistry , reaction rate constant , crystallography , physics , stereochemistry , kinetics , quantum mechanics , biochemistry
Bacterial reaction centers and photosystem II particles reduce N , N , N' , N' ‐tetramethyl‐ p ‐phenylenediamine with a rate constant that depends on the state of the acceptor complex. We assume interference by detergent to explain the dissimilar behavior of the two types of material. Using this assumption, we summarize: Q A (with an empty Q B site) is more reactive than Q A − ·X (with an occupied Q B site; X = quinone, herbicide, or, we assume, detergent). Q A − ·X is more reactive than Q A · B − .