Par proteins: Partners in polarization

  • Macara I
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Proteins can be localized either by inclusion or exclusion, and the Par polarity proteins illustrate both mechanisms. Cdc42 recruits Par-6 to a limited region of the plasma membrane. Par-6 recruits Par-3, which is actively removed from other regions by Par-1 and Par-5. Inclusion and exclusion together ensure efficient segregation of the polarity proteins.

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  • Ian G. Macara

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