Protein Information

Name Kir6.2
Synonyms ATP sensitive inward rectifier potassium channel II; ATP sensitive inward rectifier potassium channel 11; BIR; Beta cell inward rectifier subunit; HHF 2; HHF2; IKATP; Inward rectifier K(+) channel Kir6.2…

Compound Information

Name rotenone
CAS

Reference List

PubMed Abstract RScore(About this table)
16837559 Wu J, Hu J, Chen YP, Takeo T, Suga S, Dechon J, Liu Q, Yang KC, St John PA, Hu G, Wang H, Wakui M: Iptakalim modulates ATP-sensitive K (+) channels in dopamine neurons from rat substantia nigra pars compacta. J Pharmacol Exp Ther. 2006 Oct;319(1):155-64. Epub 2006 Jul 12.

In identified DA neurons acutely dissociated from rat substantia nigra pars compacta (SNc), both the mitochondrial metabolic inhibitor rotenone and the sulfonylurea receptor subtype (SUR) 1-selective K (ATP) channel opener (KCO) diazoxide induced neuronal hyperpolarization and abolished action potential firing, but the SUR2B-selective KCO cromakalim exerted little effect, suggesting that functional K (ATP) channels in rat SNc DA neurons are mainly composed of SUR1.
Furthermore, in human embryonic kidney 293 cells, iptakalim (300-500 microM) closed diazoxide-induced Kir6.2/SUR1 K (ATP) channels, which were heterologously expressed.
1(0,0,0,1) Details
10022826 Liss B, Bruns R, Roeper J: Alternative sulfonylurea receptor expression defines metabolic sensitivity of K-ATP channels in dopaminergic midbrain neurons. EMBO J. 1999 Feb 15;18(4):833-46.


In contrast to GABAergic neurons, single dopaminergic SN neurons displayed alternative co-expression of either SUR1, SUR2B or both SUR isoforms with Kir6.2.
2(0,0,0,2) Details