What is the clinical evidence from this study?

Study design: Other. Population: ROMK1 Potassium Channel regulation. Intervention: Disruption of PIP2-ROMK1 interaction. Primary outcome: Single-channel open probability (Po).

What does this research mean for the field?

Disruption of the PIP2-ROMK1 interaction decreases single-channel open probability and induces a subconductance state with heightened sensitivity to intracellular protons. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

April 1, 2000Journal of Biological ChemistryOpen Access

Phosphatidylinositol 4,5-Bisphosphate and Intracellular pH Regulate the ROMK1 Potassium Channel via Separate but Interrelated Mechanisms

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Key result

Disrupting PIP2-ROMK1 interaction decreases single-channel open probability and shifts effective pKa to ~7.8.

Population

ROMK1 potassium channels

Design

Preclinical

Authors

YLYuk‐Man LeungChinese University of Hong Kong WZWei-Zhong ZengThe University of Texas Southwestern Medical Center HLHorng‐Huei LiouFu Jen Catholic University

Discussion

Member takes

Overview

Suggests PIP2-ROMK interaction as a pH-gating regulator; hypothesis-generating for channel research, leaves open human translation.

Structured PICO

Population

ROMK1 potassium channels

Intervention

Disruption of PIP2-ROMK1 interaction and alteration of intracellular pH

Outcome

Single-channel open probability (Po) and subconductance state

Direct interaction with PIP2 is critical for ROMK1 to open at full conductance, and its disruption increases intracellular pH sensitivity via a distinct mechanism.

Cite This Study

Leung et al. (2000) studied ROMK1 Potassium Channel regulation. Disruption of PIP2-ROMK1 interaction was evaluated on Single-channel open probability (Po). Disruption of PIP2-ROMK1 interaction decreased single-channel open probability and induced a subconductance state with increased sensitivity to intracellular protons (effective pKa shifted to ~7.8).

synapsesocial.com/papers/6aa9f2d252cffb64cd35db20 https://doi.org/10.1074/jbc.275.14.10182

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April 1, 2000Journal of Biological ChemistryOpen Access

Phosphatidylinositol 4,5-Bisphosphate and Intracellular pH Regulate the ROMK1 Potassium Channel via Separate but Interrelated Mechanisms

View Full Paper

Ask AI

Bookmark

Key result

Disrupting PIP2-ROMK1 interaction decreases single-channel open probability and shifts effective pKa to ~7.8.

Population

ROMK1 potassium channels

Design

Preclinical

Authors

YLYuk‐Man LeungChinese University of Hong Kong WZWei-Zhong ZengThe University of Texas Southwestern Medical Center HLHorng‐Huei LiouFu Jen Catholic University

Discussion

Member takes

Overview

Suggests PIP2-ROMK interaction as a pH-gating regulator; hypothesis-generating for channel research, leaves open human translation.

Structured PICO

Population

ROMK1 potassium channels

Intervention

Disruption of PIP2-ROMK1 interaction and alteration of intracellular pH

Outcome

Single-channel open probability (Po) and subconductance state

Direct interaction with PIP2 is critical for ROMK1 to open at full conductance, and its disruption increases intracellular pH sensitivity via a distinct mechanism.

Cite This Study

synapsesocial.com/papers/6aa9f2d252cffb64cd35db20 https://doi.org/10.1074/jbc.275.14.10182

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