Key result
Pathogenic BRCA1 mutations destabilize active E3 ligase conformational states while hyperactive mutations increase their likelihood.
Why the study?
How pathogenic mutations in the N-terminal domain of BRCA1 disrupt its catalytic activity and lead to oncogenesis in hereditary breast and ovarian cancer was unknown.
Population
BRCA1 and BARD1 complexes
Comparison
Pathogenic mutations vs hyperactive mutations in the N-terminal domain of BRCA1
Design
Atomistic molecular dynamics simulations and Markov state modeling
Authors
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May refine BRCA1 variant models in preclinical systems; leaves open human translation and therapeutic targeting.
Pathogenic BRCA1 mutations disrupt allosteric control by BARD1, destabilizing active conformational states required for E3 ligase activity.
Bhattacharjee et al. (2025) studied Hereditary breast and ovarian cancer. Pathogenic BRCA1 mutations was evaluated on Conformational states and E3 ligase activity. Pathogenic BRCA1 mutations allosterically destabilize active conformational states pre-organized for E3 ligase activity, whereas hyperactive mutations constitutively increase their likelihood.
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