Related Experiment Video

Updated: Aug 31, 2025

Affinity Purification of Influenza Virus Ribonucleoprotein Complexes from the Chromatin of Infected Cells
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Affinity Purification of Influenza Virus Ribonucleoprotein Complexes from the Chromatin of Infected Cells

Published on: June 3, 2012

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PB1F2 from Influenza A Virus Regulates the Interaction between Cytochrome C and Cardiolipin

Yujuan Wang1, Junfeng Wang1,2

  • 1High Magnetic Field Laboratory, CAS Key Laboratory of High Magnetic Field and Ion Beam Physical Biology, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China.

Membranes
|August 25, 2022
PubMed

Insights

Influenza

Area of Science:

  • Virology
  • Molecular Biology
  • Immunology

Background:

  • PB1F2 is an influenza virus protein.
  • It induces immune cell death by targeting mitochondria.
  • PB1F2 disrupts mitochondrial membrane integrity and releases cytochrome c.

Purpose of the Study:

  • To investigate the interaction between PB1F2, cardiolipin, and cytochrome c.
  • To understand how PB1F2 regulates cytochrome c binding to cardiolipin.
  • To elucidate the role of PB1F2 in viral virulence.

Main Methods:

  • Biophysical techniques were employed.
  • In vitro membrane mimics (liposomes and nanodiscs) were used.
  • The binding of cytochrome c to cardiolipin in the presence of PB1F2 was analyzed.

Main Results:

  • PB1F2 was shown to interact with cardiolipin and cytochrome c.
  • PB1F2 facilitates the dissociation of cytochrome c-cardiolipin complexes.
  • This dissociation was observed in both liposomes and nanodiscs.

Conclusions:

  • PB1F2 acts as a viral virulence factor by inducing immune cell apoptosis.
  • The interaction with cardiolipin and cytochrome c is crucial for PB1F2's function.
  • This study provides new insights into the mechanism of PB1F2-mediated immune evasion.
Keywords:
PB1F2cardiolipincytochrome cliposomenanodisc

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