The IH-NMR-study of the copper surrounding in plantacyanin

The IH-NMR-study of the copper surrounding in plantacyanin

The 300-MHz proton NMR spectra of oxidized, reduced and apo-forms of plantacyanin were studied. The data obtained show that one of two histidines is far from copper whereas the other is a ligand of the metal. Ligands of copper are also two methionines and, possibly, tryptophan. Although the surround...

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Veröffentlicht in:Biochemical and biophysical research communications 1983-12, Vol.117 (2), p.385-391
Hauptverfasser: Babayan, M.A., Sarkissian, L.Kh, Nersissian, A.M., Sarukhanian, E.G., Nalbandyan, R.M.
Format: Artikel
Sprache:eng
Schlagworte:
Copper
Magnetic Resonance Spectroscopy
Metalloproteins
Oxidation-Reduction
Plant Proteins
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Zusammenfassung:The 300-MHz proton NMR spectra of oxidized, reduced and apo-forms of plantacyanin were studied. The data obtained show that one of two histidines is far from copper whereas the other is a ligand of the metal. Ligands of copper are also two methionines and, possibly, tryptophan. Although the surrounding of copper in plastocyanin consists of two sulfur and two nitrogen atoms, only histidine and methionine are invariant ligand amino acids of the metal in these two copper proteins from plants.
ISSN:0006-291X
1090-2104
DOI:10.1016/0006-291X(83)91212-3