Abstract:
:The effect of the length of ANF peptides on the inhibition of the norepinephrine-induced contraction was studied. Starting from the 26 residues ANF (Arg101-Tyr126), shorter N- and/or C-terminal fragments were produced, either by N-terminal chemical cleavage or C-terminal enzymatic digestion of ANF or both respectively. The N-terminal removal of Arg101 did not modify the inhibitory response. Further N-terminal truncation up to des-Arg101-Arg102-Ser103-Ser104 ANF still produced a marked inhibitory effect on norepinephrine. In contrast C-terminal cleavage had a much more pronounced effect. Since des-Tyr126 ANF, des-Arg125-Tyr126 ANF and des-Phe124-Arg125-Tyr126 ANF exhibit much lower activities than the parent ANF. Finally, when the 5 residues C-terminal to Cys121 are removed, the resulting molecule is almost inactive. These data indicate that the C-terminal segment of ANF may modulate the binding of ANF to its receptor(s). Relatively, the N-terminal region seems to be much less important.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Garcia R,Thibault G,Seidah NG,Lazure C,Cantin M,Genest J,Chrétien Mdoi
10.1016/0006-291x(85)90588-1subject
Has Abstractpub_date
1985-01-16 00:00:00pages
178-84issue
1eissn
0006-291Xissn
1090-2104pii
0006-291X(85)90588-1journal_volume
126pub_type
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