| Literature DB >> 3484952 |
J R Tippins, V Di Marzo, M Panico, H R Morris, I MacIntyre.
Abstract
The biological activities of calcitonin gene-related peptide (CGRP) enzymic digest fragments, chemically modified products and beta-CGRP have been compared to that of intact alpha-CGRP on rat isolated paired atria. Tryptic and chymotryptic digests both produced inactive fragments. Acetylation of the N-terminal amino acid (Alanine) or either of Lys 24 or Lys 35, resulted in reduced, but measurable, biological activity. Destruction of the disulphide bridge between Cys 2 and Cys 7 abolished biological activity. Substitution of several amino acids, Asp 3, Val 22 and Asn 25, with Asn, Met and Ser respectively (beta-CGRP), produced a peptide with similar biological activity to alpha-CGRP.Entities:
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Year: 1986 PMID： 3484952 DOI： 10.1016/0006-291x(86)90392-x
Source DB: PubMed Journal: Biochem Biophys Res Commun ISSN： 0006-291X Impact factor: 3.575