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COBRA 1 Antibody

Purified mouse monoclonal antibody

  • WB - COBRA 1 Antibody AN1191
    Western blot of neonatal rat brain lysate showing specific immunolabelingof the ~ 62K COBRA1 protein.
Product Information
  • Applications Legend:
  • WB=Western Blot
  • IHC=Immunohistochemistry
  • IHC-P=Immunohistochemistry (Paraffin-embedded Sections)
  • IHC-F=Immunohistochemistry (Frozen Sections)
  • IF=Immunofluorescence
  • FC=Flow Cytopmetry
  • IC=Immunochemistry
  • ICC=Immunocytochemistry
  • IP=Immunoprecipitation
  • DB=Dot Blot
  • CHIP=Chromatin Immunoprecipitation
  • FA=Fluorescence Assay
  • IEM=Immunoelectronmicroscopy
  • EIA=Enzyme Immunoassay
Primary Accession Q8WX92
Reactivity Human, Mouse, Rat
Host Mouse
Clonality monoclonal
Isotype IgG1
Clone Names F7E4
Calculated MW 62 KDa
Additional Information
Gene ID 25920
Gene Name COBRA1
Other Names Negative elongation factor B, NELF-B, Cofactor of BRCA1, NELFB, COBRA1, KIAA1182
Target/Specificity Recombinant full length human COBRA1 purified from E. coli .
Dilution WB~~ 1:1000
Format Protein G purified culture supernatant
Antibody Specificity Specific for the ~62k COBRA1 protein in Western blots of neonatal rat brain lysate.
StorageMaintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C in small aliquots to prevent freeze-thaw cycles.
PrecautionsCOBRA 1 Antibody is for research use only and not for use in diagnostic or therapeutic procedures.
ShippingBlue Ice
Research Areas
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COBRA1 (cofactor of BRCA1) also known as NELF-B, is an essential component of the negative elongation factor (NELF) complex. COBRA1 has been shown to directly bind estrogen receptor alpha (ERα) and repress ERα-mediated transcription (Aiyar SE et al., 2004). COBRA1 has also been demonstrated to interact with c-Jun and c-Fos suggesting a role in modulation of the AP-1 pathway and therefore may be important in cell proliferation, differentiation, apoptosis and oncogeneis (Zhong H et al., 2004)


Aiyar, SE, Sun J, Blair AL, Moskaluk CA, Lu Y, Ye Q, Yamaguchi Y, Mukherjee A, Ren D, Handa H, Li R (2004). Attenuation of estrogen receptor alpha-mediated transcription through estrogen-stimulated recruitment of a negative elongation factor. Genes Dev. 18 (17): 2134–46.
Zhong, H, Zhu J, Zhang H, Ding L, Sun Y, Huang C, Ye Qi (2004). COBRA1 inhibits AP-1 transcriptional activity in transfected cells. Biochem. Biophys. Res. Commun.325 (2): 568–73.

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$ 335.00
Cat# AN1191
(40 western blots)
Availability: 7-10 days
Bulk Size
Seasonal Special on Bulk Order
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