1.
Biochem Soc Trans
; 7(5): 1050-1, 1979 Oct.
Article
in English
| MEDLINE
| ID: mdl-229024
2.
Eur J Biochem
; 95(2): 327-31, 1979 Apr 02.
Article
in English
| MEDLINE
| ID: mdl-37076
ABSTRACT
Deoxyhaemocyanin, treated with NO under strictly anaerobic conditions, yielded methaemocyanin and N2O in a fast reaction. In a further slow reaction this methaemocyanin lost its triplet electron paramagnetic resonance (EPR) signal at g = 4 and yielded a nitrosyl derivative with a characteristic g = 2 Cu(II) EPR signal, indicating the binding of a single NO per copper pair. Thus under strictly anaerobic conditions deoxyhaemocyanin and methaemocyanin, treated with NO, gave the same derivative as shown by circular dichroism and EPR spectra. Methaemocyanin yielded, moreover, reversibly a nitrite derivative, characterized by a triplet signal at g = 4 with 7 hyperfine lines.