title: Peptide analogues of angiotensinogen. Effect of peptide chain length on renin inhibition.
abstract: Renin inhibition was evaluated for a series of peptide analogues of angiotensinogen with different chain lengths. Systematic deletion of amino acid residues from the hexapeptide BocPheHisLeuR-ValIleHisOCH3 showed that the presence of residues at the N-terminal Phe and His positions was essential for efficient enzyme-inhibitor binding whereas the C-terminal Ile and His residues were much less important. Synthesis of a tetrapeptide analogue shortened at the C-terminus and containing modified side chains produced a potent inhibitor of renin which demonstrated hypotensive activity in a salt depleted monkey.
mesh_terms: D000595:Amino Acid Sequence; D000808:Angiotensinogen / Q000031:analogs & derivatives* / Q000494:pharmacology; D000818:Animals; D001794:Blood Pressure / Q000187:drug effects; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008252:Macaca fascicularis; D008958:Models, Molecular; D013237:Stereoisomerism; D013329:Structure-Activity Relationship; D000092502:Renin Inhibitors
chemical_list: D000808:Angiotensinogen; D000092502:Renin Inhibitors