Title : Long-chain acyl-CoA esters and phosphatidylinositol phosphates modulate ATP inhibition of KATP channels by the same mechanism.

Pub. Date : 2003 Oct 15

PMID : 14561820






3 Functional Relationships(s)
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1 Here we show that the two types of lipid act by the same mechanism: oleoyl-CoA potently reduced the ATP sensitivity of cardiac (Kir6.2/SUR2A) and pancreatic (Kir6.2/SUR1) KATP channels in a way very similar to PIP2. oleoyl-coenzyme A potassium inwardly rectifying channel subfamily J member 11 Homo sapiens
2 Here we show that the two types of lipid act by the same mechanism: oleoyl-CoA potently reduced the ATP sensitivity of cardiac (Kir6.2/SUR2A) and pancreatic (Kir6.2/SUR1) KATP channels in a way very similar to PIP2. oleoyl-coenzyme A potassium inwardly rectifying channel subfamily J member 11 Homo sapiens
3 Mutations (R54Q, R176A) in the C- and N-terminus of Kir6.2 that greatly reduced the PIP2 modulation of ATP sensitivity likewise reduced the modulation by oleoyl-CoA, indicating that the two lipids interact with the same site. oleoyl-coenzyme A potassium inwardly rectifying channel subfamily J member 11 Homo sapiens