Rabbit anti-Human RFWD2 Polyclonal Antibody

Uniprot Id

Q8NHY2

Target Species

Human

Target Name

COP1

Target Full Name

E3 ubiquitin-protein ligase COP1

Target Function

E3 ubiquitin-protein ligase that mediates ubiquitination and subsequent proteasomal degradation of target proteins. E3 ubiquitin ligases accept ubiquitin from an E2 ubiquitin-conjugating enzyme in the form of a thioester and then directly transfers the ubiquitin to targeted substrates. Involved in JUN ubiquitination and degradation. Directly involved in p53 (TP53) ubiquitination and degradation, thereby abolishing p53-dependent transcription and apoptosis. Ubiquitinates p53 independently of MDM2 or RCHY1. Probably mediates E3 ubiquitin ligase activity by functioning as the essential RING domain subunit of larger E3 complexes. In contrast, it does not constitute the catalytic RING subunit in the DCX DET1-COP1 complex that negatively regulates JUN, the ubiquitin ligase activity being mediated by RBX1. Involved in 14-3-3 protein sigma/SFN ubiquitination and proteasomal degradation, leading to AKT activation and promotion of cell survival. Ubiquitinates MTA1 leading to its proteasomal degradation. Upon binding to TRIB1, ubiquitinates CEBPA, which lacks a canonical COP1-binding motif.

Target Subcellular Location

Nucleus speckle. Cytoplasm. Note=In the nucleus, it forms nuclear speckles.

Target Protein Families

COP1 family

Target Tissue Specificity

Ubiquitously expressed at low level. Expressed at higher level in testis, placenta, skeletal muscle and heart.

Target Synonyms

COP1; RFWD2; RNF200; E3 ubiquitin-protein ligase COP1; Constitutive photomorphogenesis protein 1 homolog; hCOP1; RING finger and WD repeat domain protein 2; RING finger protein 200; RING-type E3 ubiquitin transferase RFWD2

Target Background

Enables ubiquitin protein ligase activity. Involved in positive regulation of proteasomal ubiquitin-dependent protein catabolic process; proteasome-mediated ubiquitin-dependent protein catabolic process; and response to ionizing radiation. Part of Cul4A-RING E3 ubiquitin ligase complex.