CHARACTERIZATION AND STRUCTURE OF PINEAPPLE STEM INHIBITOR OF CYSTEINE PROTEINASES

被引:19
作者
LENARCIC, B
RITONJA, A
TURK, B
DOLENC, I
TURK, V
机构
[1] Department of Biochemistry, J. Stefan Institute, Ljubljana, Jamova 39
来源
BIOLOGICAL CHEMISTRY HOPPE-SEYLER | 1992年 / 373卷 / 07期
关键词
CYSTEINE PROTEINASE INHIBITOR; STEM BROMELAIN INHIBITOR; PRIMARY STRUCTURE;
D O I
10.1515/bchm3.1992.373.2.459
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The complete amino acid sequence of the inhibitor of cysteine proteinases from pineapple stem acetone powder was determined. The inhibitor consists of 52 amino acids and is composed of two polypeptide chains (41 and 11 amino acids) linked via disulphide bonds. It differs from already known sequences in one to four amino acids. Data from its amino acid sequence analysis clearly show that this inhibitor cannot be a member of the cystatin superfamily. The K(i) values for papain, bromelain and cathepsin L were determined.
引用
收藏
页码:459 / 464
页数:6
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