CALCIUM-REGULATED PHOSPHORYLATION WITHIN THE LEUCINE ZIPPER OF C/EBP-BETA

被引:357
作者
WEGNER, M
CAO, ZD
ROSENFELD, MG
机构
[1] UNIV CALIF SAN DIEGO,EUKARYOT REGULATORY BIOL PROGRAM,CELLULAR & MOLEC MED BLDG,LA JOLLA,CA 92093
[2] CARNEGIE INST WASHINGTON,DEPT EMBRYOL,HOWARD HUGHES RES LABS,BALTIMORE,MD 21210
[3] UNIV CALIF SAN DIEGO,HOWARD HUGHES MED INST,LA JOLLA,CA 92093
关键词
D O I
10.1126/science.256.5055.370
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
Alterations in intracellular calcium levels activate several signal transduction pathways resulting in distinct patterns of gene expression. Here, a pathway for calcium-mediated signals is demonstrated that involves C/EBP-beta, a member of the bZip family of transcription factors. In pituitary cells C/EBP-beta was phosphorylated in response to increased intracellular calcium concentrations as a consequence of the activation of a calcium-calmodulin-dependent protein kinase. Phosphorylation of serine at position 276 within the leucine zipper of C/EBP-beta appeared to confer calcium-regulated transcriptional stimulation of a promoter that contained binding sites for C/EBP-beta.
引用
收藏
页码:370 / 373
页数:4
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