CELLULAR ADP-RIBOSYLATION OF ELONGATION-FACTOR-2

被引：30

作者：

IGLEWSKI, WJ

机构：

[1] Department of Microbiology and Immunology, University of Rochester Medical Center, Rochester, 14642, New York

来源：

MOLECULAR AND CELLULAR BIOCHEMISTRY | 1994年 / 138卷 / 1-2期

关键词：

ADP-RIBOSYLTRANSFERASE; ELONGATION FACTOR 2; PROTEIN SYNTHESIS; BACTERIAL TOXINS;

D O I：

10.1007/BF00928454

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

A cellular ADP-ribosyltransferase activity has been found in a variety of animals and tissues. The enzyme transfers ADP-ribose from NAD to elongation factor 2, inactivating the factor and thus inhibiting in vitro protein synthesis. Although, the mechanism of action of the cellular enzyme appears similar to diphtheria toxin and Pseudomonas exotoxin A, it differs from the toxins in that only a fraction of the EF-2 pool is modified. The endogenously ADP-ribosylated EF-2 has been detected by a variety of methods including two-dimensional electrophoresis and immunoprecipitation with elongation factor 2 antibody. The nature of the cellular ADP-ribosyltransferase and its physiological significance are unknown.

引用

页码：131 / 133

页数：3

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