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E3 ubiquitin-protein ligase BRE1A (UniProt Q5VTR2; also known as BRE1 E3 ubiquitin ligase homolog, BRE1-A, hBRE1, Homolog of S. cerevisiae BRE1, RING finger protein 20) is encoded by the RNF20 (also known as BRE1, BRE1A) gene (Gene ID 56254) in human. BRE1A (RNF20) is a RING finger domain-containing protein originally identified as the E3 uqibiquitin ligase that catalyzes histone H2B Lys120 monoubiquitination in yeast. The histone chaperone FACT is reported to mediate RNF20 recruitment for chromatin remodeling to initiate homologous recombination repair (HRR). RNF20 is also shown to negatively regulate hepatic fatty acid metabolism by targeting SREBP1c for ubiquitination and subsequent proteasomal degradation. In addition, RNF20 is shown to mediated the polyubiquitination of ErbB3-binding protein 1 (Ebp1) and Transcription factor activator protein 2α (AP-2α). AP-2α functions as a negative regulator of adipogenesis by suppressing the transcription of CCAAT/enhancer binding protein (C/EBPα). Overexpression of RNF20 in 3T3-L1 cells results in a down-regulation of endogenous AP-2α and a concomitant transcriptional upregulation of C/EBPα.
Product Information
Format
Purified
Presentation
Purified mouse monoclonal IgG2aκ antibody in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.
Quality Level
MQ100
Applications
Key Applications
Western Blotting
Application Notes
Western Blotting Analysis: 0.5 µg/mL from a representative lot detected BRE1-A (RNF20) in 10 µg of HEK293 cell lysate.
Biological Information
Immunogen
GST-tagged recombinant protein corresponding to the third coiled-coil region of human BRE1-A (RNF20).
Epitope
Third coiled-coil region.
Clone
8A4.2
Concentration
Please refer to lot specific datasheet.
Host
Mouse
Isotype
IgG2aκ
Species Reactivity
Human
Antibody Type
Monoclonal Antibody
Entrez Gene Number
NP_062538
Gene Symbol
RNF20
BRE1
BRE1A
Purification Method
Protein G Purified
UniProt Number
Q5VTR2
Molecular Weight
~130 kDa observed.
Product Usage Statements
Quality Assurance
Evaluated by Western Blotting in HeLa cell lysate.
Western Blotting Analysis: 0.5 µg/mL of this antibody detected BRE1-A (RNF20) in 10 µg of HeLa cell lysate.
Usage Statement
Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
