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Updated: Aug 24, 2025

Native Cell Membrane Nanoparticles System for Membrane Protein-Protein Interaction Analysis
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Editorial overview: Understanding membrane and membrane proteins: Where do we go now?

Anirban Banerjee1, Manuel Palacín2

  • 1National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA; Section on Structural and Chemical Biology of Membrane Proteins, Neurosciences and Cellular and Structural Biology Division, Eunice Kennedy Shriver, USA.

Current Opinion in Structural Biology
|October 24, 2022
PubMed

Insights

Interferon-induced transmembrane protein 3 (IFITM3) is an antiviral protein. Its function depends on membrane lipid composition and protein structure, presenting a complex mechanistic question.

Area of Science:

  • Membrane biophysics
  • Virology
  • Structural biology

Background:

  • Interferon-induced transmembrane protein 3 (IFITM3) is a key antiviral protein.
  • IFITM3 functions by blocking viral and host cell membrane fusion.
  • Understanding IFITM3's mechanism requires investigating its interaction with the membrane environment.

Discussion:

  • The review explores how IFITM3's complex membrane environment influences its structure and function.
  • IFITM3 may adopt different membrane topologies.
  • Its antiviral activity is dependent on the local lipid composition of the host cell membrane.

Key Insights:

  • The interplay between membrane protein structure, function, and lipid environment is crucial.
  • IFITM3's activity is intrinsically linked to its specific membrane microenvironment.
  • The precise molecular mechanisms governing IFITM3's function remain incompletely understood.

Outlook:

  • Further research is needed to elucidate the detailed molecular mechanisms of IFITM3.
  • Investigating IFITM3's different topologies and their functional implications is essential.
  • Understanding the structure-function-lipid relationship will advance antiviral strategies.

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