IDENTIFICATION OF CATHEPSIN L-LIKE PROTEINASE AND AMINOPEPTIDASE IN YOLK GRANULES OF THE SAND WORM, NEREIS-DIVERSICOLOR

被引：5
|
作者：
BONNIER, P
BAERT, JL
机构：
[1] Laboratoire d'Endocrinologie des Invertébrés, U.R.A. CNRS 148, Université des Sciences et Technique de Lille Flandres Artois
来源：
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY B-BIOCHEMISTRY & MOLECULAR BIOLOGY | 1992年 / 103卷 / 02期
关键词：
D O I：
10.1016/0305-0491(92)90315-I
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：
1. Two proteinases have been identified in yolk granules of Nereis diversicolor mature oocytes, an aminopeptidase and an acid cysteine proteinase. 2. The aminopeptidase was identified as a metallo-enzyme having a molecular weight of about 260 kDa. 3. Except that the acid cysteine proteinase is a high molecular weight protein (200 kDa) and has a very low pH optimum (3.0), the enzyme possesses properties resembling those of mammalian cathepsin L. 4. The cathepsin L-like proteinase was found to be liable to the in vitro proteolysis of the yolk granule proteins and is therefore suggested to be involved in yolk protein processing.
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页码：425 / 430
页数：6
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