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学科主题: Multidisciplinary Sciences
题名: PURIFICATION AND CHARACTERIZATION OF A KINASE SPECIFIC FOR THE SERINE-RICH AND ARGININE-RICH PRE-MESSENGER-RNA SPLICING FACTORS
作者: JIAN-FANG GUI ; HELENE TRONCHERE ; SHARON D. CHANDLER ; XIANG-DONG FU
关键词: PREMESSENGER-RNA ; SR-PROTEINS ; CONSERVED FAMILY ; SITE SELECTION ; NUCLEAR PHOSPHOPROTEINS ; FACTOR ASF/SF2 ; INVITRO ; DOMAINS ; ENHANCER ; BINDING
刊名: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
发表日期: 1994
卷: 91, 期:23, 页:10824-10828
收录类别: SCI
部门归属: UNIV CALIF SAN DIEGO,DIV CELLULAR & MOLEC MED,LA JOLLA,CA 92093; UNIV CALIF SAN DIEGO,PROGRAM BIOMED SCI,LA JOLLA,CA 92093; CHINESE ACAD SCI,INST HYDROBIOL,WUHAN 430072,PEOPLES R CHINA
摘要: Members of the SR family of pre-mRNA splicing factors are phosphoproteins that share a phosphoepitope specifically recognized by monoclonal antibody (mAb) 104. Recent studies have indicated that phosphorylation may regulate the activity and the intracellular localization of these splicing factors. Here, we report the purification and kinetic properties of SR protein kinase 1 (SRPK1), a kinase specific for SR family members. We demonstrate that the kinase specifically recognizes the SR domain, which contains serine/arginine repeats. Previous studies have shown that dephosphorylated SR proteins did not react with mAb 104 and migrated faster in SDS gels than SR proteins from mammalian cells. We show that SRPK1 restores both mobility and mAB 104 reactivity to a SR protein SF2/ASF (splicing factor 2/alternative splicing factor) produced in bacteria, suggesting that SRPK1 is responsible for the generation of the mAb 104-specific phosphoepitope in vivo. Finally, we have correlated the effects of mutagenesis in the SR domain of SF2/ASF on splicing with those on phosphorylation of the protein by SRPK1, suggesting that phosphorylation of SR proteins is required for splicing.
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/10312
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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JIAN-FANG GUI; HELENE TRONCHERE; SHARON D. CHANDLER; XIANG-DONG FU.PURIFICATION AND CHARACTERIZATION OF A KINASE SPECIFIC FOR THE SERINE-RICH AND ARGININE-RICH PRE-MESSENGER-RNA SPLICING FACTORS,PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,1994,91(23):10824-10828
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文件名: PURIFICATION AND CHARACTERIZATION OF A KINASE SPECIFIC FOR THE SERINE-RICH AND ARGININE-RICH PRE-MESSENGER-RNA SPLICING FACTOR.pdf
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