ASB2α, an E3 ubiquitin ligase specificity subunit, regulates cell spreading and triggers proteasomal degradation of filamins by targeting the filamin calponin homology 1 domain.

Abstract excerpt

Filamins are actin-binding and cross-linking proteins that organize the actin cytoskeleton and anchor transmembrane proteins to the cytoskeleton and scaffold signaling pathways. During hematopoietic cell differentiation, transient expression of ASB2α, the specificity subunit of an E3-ubiquitin ligase complex, triggers acute proteasomal degradation of filamins. This led to the proposal that ASB2α regulates...

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