Assembly, maturation, and turnover of K(ATP) channel subunits.

Abstract excerpt

ATP-sensitive K(+), or K(ATP), channels are comprised of K(IR)6.x and sulfonylurea receptor (SUR) subunits that assemble as octamers, (K(IR)/SUR)(4). The assembly pathway is unknown. Pulse-labeling studies show that when K(IR)6.2 is expressed individually, its turnover is biphasic; approximately 60% is lost with t((1/2)) approximately 36 min. The remainder converts to a long-lived species (t((1/2)) approximately...

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