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An aspartic acid residue at the active site of pepsin. The isolation and sequence of the heptapeptide.
Pepsin reacts stoicheiometrically with the active-site-directed irreversible inhibitor N-diazoacetyl-l-phenylalanine methyl ester, with concomitant loss of all proteolytic and peptidolytic activity. The reagent esterifies a unique aspartic acid residue in pepsin, which is in the sequence:Ile-Val-Asp-Thr-Gly-Thr-Ser
PMID: 4897201 [PubMed - indexed for MEDLINE]
PMCID: PMC1184645
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Cited by 15 PubMed Central articles