Related Experiment Video

Updated: Jan 20, 2026

Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
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Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR

Published on: December 16, 2013

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The ion channel function of polycystin-1 in the polycystin-1/polycystin-2 complex

Zhifei Wang1, Courtney Ng1, Xiong Liu2

  • 1Department of Biological Sciences, St. John's University, Queens, NY, USA.

EMBO Reports
|August 24, 2019
PubMed

Insights

Researchers identified the ion channel function of polycystin-1 in Autosomal dominant polycystic kidney disease (ADPKD). This finding clarifies the role of polycystin-1 in the polycystin-1/polycystin-2 complex, crucial for understanding ADPKD.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Genetics

Background:

  • Autosomal dominant polycystic kidney disease (ADPKD) is a genetic disorder.
  • Mutations in PKD1 and PKD2 genes cause ADPKD.
  • Polycystin-1 and polycystin-2 form a complex in primary cilia, but polycystin-1's function is unclear.

Purpose of the Study:

  • To investigate the ion channel function of polycystin-1.
  • To understand the role of polycystin-1 in the polycystin-1/polycystin-2 complex.
  • To explore the mechanism of ADPKD.

Main Methods:

  • Directly recorded currents from a gain-of-function (GOF) polycystin-1/polycystin-2 channel.
  • Analyzed the properties of the GOF channel.
  • Investigated the requirement of polycystin-1 cleavage for channel activity.

Main Results:

  • The polycystin-1/polycystin-2 channel exhibits distinct properties compared to homomeric polycystin-2 channels.
  • Polycystin-1 directly contributes to the channel pore.
  • The eleven transmembrane domains of polycystin-1 are sufficient for channel function.
  • Cleavage of polycystin-1 is not essential for the GOF channel's activity.

Conclusions:

  • Polycystin-1 possesses intrinsic ion channel function within the polycystin-1/polycystin-2 complex.
  • This study enhances the understanding of polycystin-1's role in ADPKD pathogenesis.
  • Findings provide a basis for developing targeted ADPKD therapies.

Keywords:
autosomal dominant polycystic kidney diseasegain-of-functionion channelpolycystin-1polycystin-2

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