Boon PJ, Tesser GI. Protection and deprotection of horse cytochrome c.
INTERNATIONAL JOURNAL OF PEPTIDE AND PROTEIN RESEARCH 1985;
25:510-6. [PMID:
2991154 DOI:
10.1111/j.1399-3011.1985.tb02204.x]
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Abstract
The last step in the semisynthesis of horse cytochrome c analogues (formation of the bond 65-66) requires the conformation of the complex between two complementary fragments, (1-65) lactone and (66-104). The fragments can be obtained from a limited degradation with cyanogen bromide. The amino component in this reaction can also be obtained from organo chemical synthesis in which the C-terminal fragment (81-104) is required in a selectively protected form. The latter is available from a cyanogen bromide degradation of ubiquitously protected cytochrome c. The details of the protection/deprotection reaction and the properties of nonadecamethylsulfonylethyloxycarbonyl cytochrome c are described.
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