The cystatins: protein inhibitors of cysteine proteinases.
The last decade has witnessed enormous progress of protein inhibitors of cysteine proteinases concerning their structures, functions and evolutionary relationships. Although they differ in their molecular properties and biological distribution, they are structurally related proteins. All three inhibitory families, the stefins, the cystatins and the kininogens, are members of the same superfamily. Recently determined crystal structures of chicken cystatin and human stefin B established a new mechanism of interaction between cysteine proteinases and their inhibitors which is fundamentally different from the standard mechanism for serine proteinases and their inhibitors.
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Department of Biochemistry, Jozef Stefan Institute, Ljubljana, Slovenia, Yugoslavia.
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D000595:Amino Acid Sequence; D055313:Cystatin B; D015891:Cystatins / Q000737:chemistry* / Q000378:metabolism; D015853:Cysteine Proteinase Inhibitors; D007704:Kininogens / Q000737:chemistry / Q000378:metabolism; D046911:Macromolecular Substances; D008969:Molecular Sequence Data; D011487:Protein Conformation
C524994:CSTB protein, human; D015891:Cystatins; D015853:Cysteine Proteinase Inhibitors; D007704:Kininogens; D046911:Macromolecular Substances; D055313:Cystatin B