Protein fem-1 homolog B (FEM1B)

Part of an E3 ubiquitin-protein ligase complex, in which it may act as a substrate recognition subunit. Involved in apoptosis by acting as a departure receptor-associated protein that mediates apoptosis.

Also involved in glucose homeostasis in pancreatic islet. Functions as an adapter/mediator in replication stress-induced signaling that contributes to the activation of CHEK1.