IDENTIFICATION OF A NONNEURONAL ISOFORM OF SYNAPTOTAGMIN

被引:77
作者
HUDSON, AW [1 ]
BIRNBAUM, MJ [1 ]
机构
[1] HARVARD UNIV,SCH MED,DEPT CELL BIOL,BOSTON,MA 02115
关键词
D O I
10.1073/pnas.92.13.5895
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
Synaptotagmins, which have been found exclusively in neuroendocrine or exocrine tissues, have been implicated in the regulation of secretory vesicle fusion with the plasma membrane. The present paper describes a synaptotagmin isoform (synaptotagmin-5) which exhibits 49% amino acid identity to synaptotagmin-1 and -2. Synaptotagmin-5 mRNA is expressed in rat kidney, adipose tissue, lung, and heart, as well as at higher levels in brain and PC12 cells. Antiserum specific for the synaptotagmin-5 isoform recognizes a protein of about 50 kDa which is about 6-fold more abundant in brain synaptic vesicles than in whole brain membranes.
引用
收藏
页码:5895 / 5899
页数:5
相关论文
共 43 条