TY - JOUR
T1 - Effect of oxidation state of plastocyanin on the remote binding site pKa
AU - McGinnis, Joseph
AU - Sinclair-Day, John D.
AU - Sykes, A. Geoffrey
PY - 1986/1/1
Y1 - 1986/1/1
N2 - The variation of rate constants for the [Co(phen)3]2+ [phen = 1,1 0-phenanthroline), [Co(terpy)2]2+ (terpy = 2,2′;6′,2″-terpyridine), and [Ru(NH3)5(py)]2+ (py = pyridine) reductions of parsley plastocyanin PCu(II) with pH indicate an acid dissociation pKa at the remote east face of 5.05, whereas for the oxidant [Co(phen)3]3+ with PCu(I) the value is 5.8. Implications of this change and the relevance to the reaction with cytochrome f are considered.
AB - The variation of rate constants for the [Co(phen)3]2+ [phen = 1,1 0-phenanthroline), [Co(terpy)2]2+ (terpy = 2,2′;6′,2″-terpyridine), and [Ru(NH3)5(py)]2+ (py = pyridine) reductions of parsley plastocyanin PCu(II) with pH indicate an acid dissociation pKa at the remote east face of 5.05, whereas for the oxidant [Co(phen)3]3+ with PCu(I) the value is 5.8. Implications of this change and the relevance to the reaction with cytochrome f are considered.
UR - http://www.scopus.com/inward/record.url?scp=37049081319&partnerID=8YFLogxK
U2 - 10.1039/DT9860002011
DO - 10.1039/DT9860002011
M3 - Article
AN - SCOPUS:37049081319
SN - 1472-7773
SP - 2011
EP - 2012
JO - Journal of the Chemical Society, Dalton Transactions
JF - Journal of the Chemical Society, Dalton Transactions
IS - 9
ER -