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Diaphanous Inhibitory Domain–Diaphanous Autoregulatory Domain Interaction

Molecular classification
Protein-Protein Interaction, Formins, Diaphanous-related formins
01

Overview

The interaction between the diaphanous inhibitory domain (DID) and the diaphanous autoregulatory domain (DAD) is a key regulatory mechanism in diaphanous-related formins (DRFs). This interaction maintains DRFs in an autoinhibited state, preventing FH2-mediated actin polymerization, until activation by upstream signals like Rho GTPases. Disruption of this interaction leads to the activation of DRFs and subsequent actin polymerization, influencing cell shape, migration, division, and development. DRFs also coordinate microtubule stabilization.

02

Mechanism of action

Inhibition of DID-DAD interaction to activate Formins.

03

Biological functions

Actin filament nucleationActin filament elongationRegulation of actin cytoskeletonCell morphologyCell migrationCell divisionMicrotubule stabilization
04

Disease associations

Hearing loss syndromesThrombocytopenia

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