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Anti-NCOA1 Antibody, clone 5B9, ZooMAb® Rabbit Monoclonal

enhanced validationgreener alternative

recombinant, expressed in HEK 293 cells

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Class E basic helix-loop-helix protein 74, EC:, NCoA-1, Nuclear receptor coactivator 1, Protein Hin-2, RIP160, Renal carcinoma antigen NY-REN-52, SRC-1, Steroid receptor coactivator 1, bHLHe74

biological source

rabbit (recombinant)

Quality Level


expressed in HEK 293 cells



antibody form

purified antibody

antibody product type

primary antibodies


5B9, monoclonal
recombinant monoclonal

product line

ZooMAb® learn more



mol wt

calculated mol wt 156.76 kDa
observed mol wt ~175 kDa

species reactivity



antibody small pack of 25 μL

greener alternative product characteristics

Waste Prevention
Designing Safer Chemicals
Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

enhanced validation

recombinant expression
Learn more about Antibody Enhanced Validation


affinity binding assay: suitable
immunocytochemistry: suitable
western blot: suitable



UniProt accession no.

greener alternative category

shipped in


storage temp.


target post-translational modification


Gene Information

human ... NCOA1(8648)

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This Item
Gene Information

human ... NCOA1(8648)

Gene Information


Gene Information

human ... MYC;BHLHE39(4609)

Gene Information

human ... PCNA(5111)









species reactivity


species reactivity

mouse, human

species reactivity

mouse, human

species reactivity


biological source

rabbit (recombinant)

biological source


biological source

rabbit (recombinant)

biological source

rabbit (recombinant)

antibody form

purified antibody

antibody form

purified antibody

antibody form

purified antibody

antibody form

purified antibody

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General description

We are committed to bringing you greener alternative products, which adhere to one or more of The 12 Principles of Green Chemistry.This antibody is Preservative-free, produced without the harm or sacrifice of animals and exceptionally stable to allow for ambient shipping and storage if needed and thus aligns with "Waste Prevention", "Designing Safer Chemicals" and "Design for Energy Efficiency". Click here for more information.
ZooMAb antibodies represent an entirely new generation of recombinant monoclonal antibodies.

Each ZooMAb antibody is manufactured using our proprietary recombinant expression system, purified to homogeneity, and precisely dispensed to produce robust and highly reproducible lot-to-lot consistency. Only top-performing clones are released for use by researchers. Each antibody is validated for high specificity and affinity across multiple applications, including its most commonly used application. ZooMAb antibodies are reliably available and ready to ship when you need them.

Learn more about ZooMAb here.


Clone 5B9 is a ZooMAb rabbit recombinant monoclonal antibody that specifically detects human Nuclear receptor coactivator 1 (NCOA1). It targets an epitope within 235 amino acids from the N-terminal half.


His-tagged recombinant fragment corresponding to 235 amino acids from the N-terminal half of human Nuclear receptor coactivator 1.


Anti-NCOA1, clone 5B9 ZooMAb, Cat. No. ZRB1371, a recombinant Rabbit monoclonal antibody that targets Nuclear Receptor Coactivator 1 (NCOA1) and is tested in Affinity Binding Assay, Immunocytochemistry, and Western Blotting.
Immunocytochemistry Analysis: A 1:100 dilution from a representative lot detected NCOA1 in U-2 OS cells.

Affinity Binding Assay: A representative lot of this antibody bound recombinant human NCOA1 protein with a KD of 6.9 x 10-7 in an affinity binding assay.

Note: Actual optimal working dilutions must be determined by end user as specimens, and experimental conditions may vary with the end user.

Target description

Nuclear receptor coactivator 1 (UniProt: Q15788; also known as EC:, NCoA-1, Class E basic helix-loop-helix protein 74, bHLHe74, Protein Hin-2, RIP160, Renal carcinoma antigen NY-REN-52, Steroid receptor coactivator 1, SRC-1) is encoded by the NCOA1 (also known as BHLHE74, SRC1) gene (Gene ID: 8648) in human. NCOA1 I a member of the SRC/p160 nuclear receptor coactivator family that is widely expressed. It serves as a nuclear receptor coactivator that directly binds nuclear receptors and plays crucial roles in the regulation of gene expression mediated by a wide spectrum of steroid receptors such as androgen receptor, estrogen receptor alpha, and beta. It also displays histone acetyltransferase activity toward H3 and H4. NCOA1 contains seven LXXLL motifs of which motifs 3, 4 and 5 are essential for the association with nuclear receptors and motif 7 increases the affinity for steroid receptors in vitro. It is recruited to AF2 domains of ligand-activated nuclear receptors (NR) through LXXLL motifs located in a central NR interaction domain. It contains both a basic-helix-loop-helix (bHLH) domain (aa 23-80) and a periodicity/aryl hydrocarbon receptor nuclear translocator (ARNT)/single-minded (PAS) domain (aa 109-180). The bHLH-PAS domain houses a nuclear localization sequence and interacts with the Baf57 subunit of the SWI/SNF ATP-dependent chromatin remodeling complex. It also has a serine/threonine-rich region within the -terminal half (between amino acids 300 and 600) that allows for various posttranslational modifications. Dysregulation of NCOA1 has been linked to a variety of cancers and its elevated levels are reported to enhance breast cancer cell proliferation and metastasis. A chromosomal aberration involving NCOA1 has also been shown to be a cause for rhabdomyosarcoma. This ZooMAb recombinant monoclonal antibody, generated by our propriety technology, offers significantly enhanced specificity, affinity, reproducibility, and stability over conventional monoclonals. (Ref.: Wang, L., et al. (2018). Cancer Med. 7(10); 5205-5216; Rollins, DA., et al. (2015). Mol. Endocrinol 29(4); 502-517).

Physical form

Purified recombinant rabbit monoclonal antibody IgG, lyophilized in PBS with 5% Trehalose, normal appearance a coarse or translucent resin. Contains no biocide or preservatives, such as azide, or any animal by-products. Larger pack sizes provided as multiples of 25 μL.


30 μg/mL after reconstitution at 25 μL per vial. Please refer to guidance on suggested starting dilutions and/or titers per application and sample type.

Storage and Stability

Recommend storage of lyophilized product at 2-8°C; Before reconstitution, micro-centrifuge vials briefly to spin down material to bottom of the vial; Reconstitute each vial by adding 25 μL of filtered lab grade water or PBS; Reconstituted antibodies can be stored at 2-8°C, or -20°C for long term storage. Avoid repeated freeze-thaws.

Legal Information

ZooMAb is a registered trademark of Merck KGaA, Darmstadt, Germany


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.

Storage Class

11 - Combustible Solids



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