Rabbit anti-Human FEM1B Polyclonal Antibody

Uniprot Id

Q9UK73

Target Species

Human

Target Name

FEM1B

Target Full Name

Protein fem-1 homolog B

Target Function

Substrate-recognition component of a Cul2-RING (CRL2) E3 ubiquitin-protein ligase complex of the DesCEND (destruction via C-end degrons) pathway, which recognizes a C-degron located at the extreme C terminus of target proteins, leading to their ubiquitination and degradation. The C-degron recognized by the DesCEND pathway is usually a motif of less than ten residues and can be present in full-length proteins, truncated proteins or proteolytically cleaved forms. The CRL2(FEM1B) complex specifically recognizes proteins ending with -Gly-Leu-Asp-Arg, such as CDK5R1, leading to their ubiquitination and degradation. Also acts as a regulator of the reductive stress response by mediating ubiquitination of reduced FNIP1: in response to reductive stress, the CRL2(FEM1B) complex specifically recognizes a conserved Cys degron in FNIP1 when this degron is reduced, leading to FNIP1 degradation and subsequent activation of mitochondria to recalibrate reactive oxygen species (ROS). Promotes ubiquitination of GLI1, suppressing GLI1 transcriptional activator activity. Promotes ubiquitination and degradation of ANKRD37. Promotes ubiquitination and degradation of SLBP. Involved in apoptosis by acting as a death receptor-associated protein that mediates apoptosis. Also involved in glucose homeostasis in pancreatic islet. May also act as an adapter/mediator in replication stress-induced signaling that leads to the activation of CHEK1.

Target Subcellular Location

Cytoplasm. Nucleus.

Target Protein Families

Fem-1 family

Target Tissue Specificity

Widely expressed. Highly expressed in testis. Weakly expressed in other tissues.

Target Synonyms

F1A alpha; F1A-alpha; F1AA; Fem-1-like death receptor-binding protein alpha; Fem-1-like in apoptotic pathway protein alpha; Fem1 homolog b; FEM1 like death receptor binding protein; FEM1-beta; FEM1b; FEM1B_HUMAN; Protein fem-1 homolog B