BOVINE SEMINAL RIBONUCLEASE DESTABILIZES NEGATIVELY CHARGED MEMBRANES

被引:26
作者
MANCHENO, JM
GASSET, M
ONADERRA, M
GAVILANES, JG
DALESSIO, G
机构
[1] UNIV FEDERICO II NAPOLI,DIPARTIMENTO CHIM ORGAN & BIOL,I-80134 NAPLES,ITALY
[2] UNIV COMPLUTENSE,FAC QUIM,DEPT BIOQUIM & BIOL MOLEC,E-28040 MADRID,SPAIN
关键词
D O I
10.1006/bbrc.1994.1202
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
Bovine seminal ribonuclease (BS-RNase), an antitumor protein selectively cytotoxic for malignant cells, (i) specifically aggregates negatively charged vesicles and modifies the thermotropic behaviour of the phospholipid; (ii) decreases the amplitude of the thermal transition of the phospholipid; and (iii) provokes lipid-mixing between bilayers of negatively charged vesicles. This engenders leakage of the aqueous vesicle contents. Monomeric BS-RNase, devoid of antitumor action, does not produce these effects. These results suggest that the destabilization of the membrane bilayer promoted by BS-RNase may be involved in the antitumor action of the protein. (C) 1994 Academic Press, Inc.
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收藏
页码:119 / 124
页数:6
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