Effect of oxidation state of plastocyanin on the remote binding site pKa

Joseph McGinnis; John D. Sinclair-Day; A. Geoffrey Sykes

doi:10.1039/DT9860002011

Effect of oxidation state of plastocyanin on the remote binding site pK_a

Joseph McGinnis, John D. Sinclair-Day, A. Geoffrey Sykes

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

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 pK_a 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.

Original language	English
Pages (from-to)	2011-2012
Number of pages	2
Journal	Journal of the Chemical Society, Dalton Transactions
Issue number	9
DOIs	https://doi.org/10.1039/DT9860002011
Publication status	Published - 1 Jan 1986

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title = "Effect of oxidation state of plastocyanin on the remote binding site pKa",

abstract = "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.",

author = "Joseph McGinnis and Sinclair-Day, \{John D.\} and Sykes, \{A. Geoffrey\}",

year = "1986",

month = jan,

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doi = "10.1039/DT9860002011",

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journal = "Journal of the Chemical Society, Dalton Transactions",

issn = "1472-7773",

publisher = "Royal Society of Chemistry",

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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 - https://www.scopus.com/pages/publications/37049081319

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 -

Effect of oxidation state of plastocyanin on the remote binding site pK_a

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