Definition: A homologous group of endogenous CYSTEINE PROTEINASE INHIBITORS. The cystatins inhibit most CYSTEINE ENDOPEPTIDASES such as PAPAIN, and other peptidases which have a sulfhydryl group at the active site.
general or unspecified; prefer specifics
Other names Cystatin Superfamily; Cystatins, Type III; Cystatins, Type II; Cystatins, Type I; Cystatins, Type 3; Cystatins, Type 2; Cystatins, Type 1; Cystatin Related Proteins; Type III Cystatins; Type II Cystatins; Type I Cystatins; Type 3 Cystatins; Type 2 Cystatins; Type 1 Cystatins; Cystatin-Related Proteins; Stefins
cystatin, egg-white [ chicken cystatin,cystatin (desSer1, Ile29, Leu89),egg-white cystatin ] cysteine thiol protease inhibitor composed of 116 amino acid residues; MW 13,000; different from human cystatin, gamma-trace & stefin; see also the general term cysteine protease inhibitors, endogenou