Expression cloning of KCRF, a potassium channel regulatory factor.
Expression cloning of KCRF, a potassium channel regulatory factor.
复制标题
钾通道调节因子 KCRF 的表达克隆。
DOI:
10.1006/bbrc.2000.3240
复制
发表时间:
2000
期刊:
影响因子:
--
通讯作者:
Dascal,N
中科院分区:
文献类型:
--
作者:
Keren-Raifman,T;Ivanina,T;Bismuth,Y;Dascal,N
By functional coexpression screening of a rat cDNA library in Xenopus oocytes, we have cloned a protein (KCRF: K Channel Regulatory Factor) that reduces currents of several K+channels: G protein-activated GIRK1/4 (Kir3.1/Kir3.4), inward rectifier IRK1 (Kir2.1), and voltage-dependent KV1.1/KVβ1.1. KCRF did not modulate two other K+channels: ROMK1 (Kir1.1) and GIRK1/2 (Kir3.1/Kir3.2) and the voltage-dependent L-type Ca2+channels. Western blot analysis showed that KCRF is ubiquitous in rat tissues. Biochemical and electrophysiological experiments revealed that coexpression of KCRF causes a decrease in the level of expression of IRK1 and KV1.1/KVβ1.1 proteins in the oocytes.