Title : Molecular determinants for sodium-dependent activation of G protein-gated K+ channels.

Pub. Date : 1999 Mar 26

PMID : 10085101






5 Functional Relationships(s)
Download
Sentence
Compound Name
Protein Name
Organism
1 Within this region, GIRK2 has an aspartate at position 226, whereas GIRK1 has an asparagine at the equivalent position (217). Asparagine potassium inwardly rectifying channel subfamily J member 3 Homo sapiens
2 PIP2 dramatically increased the open probability of GIRK1/GIRK2 channels in the absence of Na+ or Gbetagamma but did not preclude further activation by Na+, suggesting that Na+ is not acting simply to promote PIP2 binding to GIRKs. Phosphatidylinositol 4,5-Diphosphate potassium inwardly rectifying channel subfamily J member 3 Homo sapiens
3 PIP2 dramatically increased the open probability of GIRK1/GIRK2 channels in the absence of Na+ or Gbetagamma but did not preclude further activation by Na+, suggesting that Na+ is not acting simply to promote PIP2 binding to GIRKs. gbetagamma potassium inwardly rectifying channel subfamily J member 3 Homo sapiens
4 PIP2 dramatically increased the open probability of GIRK1/GIRK2 channels in the absence of Na+ or Gbetagamma but did not preclude further activation by Na+, suggesting that Na+ is not acting simply to promote PIP2 binding to GIRKs. Phosphatidylinositol 4,5-Diphosphate potassium inwardly rectifying channel subfamily J member 3 Homo sapiens
5 We conclude that aspartate 226 in GIRK2 plays a crucial role in Na+-dependent gating of GIRK1/GIRK2 channels. Aspartic Acid potassium inwardly rectifying channel subfamily J member 3 Homo sapiens