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Expression and Purification of the Human Lipid-sensitive Cation Channel TRPC3 for Structural Determination by Single-particle Cryo-electron Microscopy
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TRPC1: a core component of store-operated calcium channels

I S Ambudkar1

  • 1Building 10, Room 1N-113, Secretory Physiology Section, GTTB (Gene Therapy and Therapeutics Branch), NIDCR (National Institute of Dental And Craniofacial Research), NIH (National Institutes of Health), Bethesda, MD 20892, USA. indu.ambudkar@nih.gov

Biochemical Society Transactions
|January 20, 2007
PubMed

Insights

Transient Receptor Potential Canonical 1 (TRPC1) is a key component of store-operated calcium channels (SOC). Understanding TRPC1

Area of Science:

  • Molecular Biology
  • Cell Physiology
  • Biochemistry

Background:

  • Transient Receptor Potential Canonical (TRPC) proteins, particularly TRPC1, are implicated as components of store-operated calcium channels (SOC).
  • TRPC1's role in store-operated calcium entry (SOCE) is established, but its regulatory mechanisms and physiological functions require further elucidation.
  • TRPC1 forms signaling complexes with calcium-handling proteins within specific plasma membrane microdomains.

Purpose of the Study:

  • To review the role of TRPC1 in store-operated calcium entry (SOCE).
  • To discuss how TRPC1 studies validate the mechanism of SOCE.
  • To explore novel regulators and the molecular basis for TRPC1-containing SOC regulation.

Main Methods:

  • Review of existing literature on TRPC1 and SOCE.
  • Analysis of studies on TRPC1 interactions and protein assembly.
  • Discussion of novel regulatory mechanisms for TRPC1-containing channels.

Main Results:

  • TRPC1 is the leading candidate for SOC channel components.
  • Interactions between TRPC1 monomers and other proteins are critical for channel function and surface expression.
  • Novel regulators of TRPC1-containing SOCs have been identified, revealing common regulatory principles with CRAC channels.

Conclusions:

  • TRPC1 plays a significant role in SOCE.
  • Understanding TRPC1 interactions and regulation provides insights into SOCE mechanisms.
  • TRPC1 serves as an experimental basis for validating SOCE mechanisms.

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