Population
Kir channels (Kir6.2, Kir1.1, Kir4.1, Kir5.1)
Comparison
Mutation of N-terminal Arg-54 in Kir6.2 and… vs Wild-type Kir channels
Design
Preclinical
Authors
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Arg-54 mutation disrupts PIP2-ATP coupling in K(ATP) channels; hypothesis-generating in animal models, requiring human validation before clinical relevance.
Electrostatic interactions between PIP2 and the N-terminal Arg-54 are essential for modulating ATP sensitivity in K(ATP) channels, explaining the need for a silent N-terminal PIP2 site in pH-gated channels.
Schulze et al. (2003) studied this question.
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