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  • Title: Interaction between isolated cytochrome c1 and cytochrome c.
    Author: Broger C, Salardi S, Azzi A.
    Journal: Eur J Biochem; 1983 Mar 15; 131(2):349-52. PubMed ID: 6299737.
    Abstract:
    Cytochrome c1 from bovine heart mitochondria was isolated by a modification of the technique of König et al. [(1980) Biochim. Biophys. Acta 621, 283-295] which involved an affinity chromatography step on a gel with yeast cytochrome c as a ligand. Its spectra, electrophoretic pattern in presence of sodium dodecylsulfate, its reducibility by ascorbate and cytochrome c were characteristic of a native cytochrome, with a single polypeptide having an apparent molecular weight of 30 000. By using an arylazido derivative of cytochrome c, having the photoactive group bound to lysine 13, upon illumination a cross-link with the described preparation of cytochrome c1 was obtained. By pepsin digestion of the cross-linked complex a limiting fragment was obtained and partially sequenced. It allowed to identify the site of binding of cytochrome c near the sequence 167-174 of cytochrome c1.
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