PAC-1 - A MITOGEN-INDUCED NUCLEAR-PROTEIN TYROSINE PHOSPHATASE

被引:291
作者
ROHAN, PJ
DAVIS, P
MOSKALUK, CA
KEARNS, M
KRUTZSCH, H
SIEBENLIST, U
KELLY, K
机构
[1] NCI,PATHOL LAB,BETHESDA,MD 20892
[2] NIAID,IMMUNOREGULAT LAB,BETHESDA,MD 20892
关键词
D O I
10.1126/science.7681221
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Tyrosine phosphorylation of proteins is required for signal transduction in cells and for growth regulation. A mitogen-induced gene (PAC-1) has been cloned from human T cells and encodes a 32-kilodalton protein that contains a sequence that defines the enzymatic site of known protein phosphotyrosine phosphatases (PTPases). Other than this sequence, PAC-1 is different from several other known related PTPases exemplified by PTP-1b. PAC-1 is similar to a phosphatase induced by mitogens or heat shock in fibroblasts, a yeast gene, and a vaccinia virus-encoded serine-tyrosine phosphatase (VH1). PAC-1 was predominantly expressed in hematopoietic tissues and localized to the nucleus in transfected COS-7 cells and in mitogen-stimulated T cells.
引用
收藏
页码:1763 / 1766
页数:4
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