Date published: 2026-4-19

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B42 Antibody (E-2): sc-377101

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Datasheets
  • B42 Antibody (E-2) is a mouse monoclonal IgG1 κ B42 antibody provided at 200 µg/ml
  • specific for an epitope mapping between amino acids 57-93 within an internal region of the transcriptional activation domain of B42
  • B42 Antibody (E-2) is recommended for detection of B42 fusion proteins by WB, IP, IF and ELISA
  • Anti-B42 Antibody (E-2) is available conjugated to agarose for IP; HRP for WB, IHC(P) and ELISA; and to either phycoerythrin or FITC for IF, IHC(P) and FCM
  • also available conjugated to Alexa Fluor® 488, Alexa Fluor® 546, Alexa Fluor® 594 or Alexa Fluor® 647 for WB (RGB), IF, IHC(P) and FCM, and for use with RGB fluorescent imaging systems, such as iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • also available conjugated to Alexa Fluor® 680 or Alexa Fluor® 790 for WB (NIR), IF and FCM; for use with Near-Infrared (NIR) detection systems, such as LI-COR®Odyssey®, iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • m-IgG Fc BP-HRP and m-IgG1 BP-HRP are the preferred secondary detection reagents for B42 Antibody (E-2) for WB applications. These reagents are now offered in bundles with B42 Antibody (E-2) (see ordering information below).
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    B42 Antibody (E-2) is a mouse monoclonal IgG1 kappa light chain antibody that detects B42 protein of Saccharomyces cerevisiae by western blotting (WB), immunoprecipitation (IP), immunofluorescence (IF), and enzyme-linked immunosorbent assay (ELISA). B42 (E-2) antibody is available in both non-conjugated and various conjugated forms, including agarose, horseradish peroxidase (HRP), phycoerythrin (PE), fluorescein isothiocyanate (FITC), and multiple Alexa Fluor® conjugates. B42 protein serves as a transcriptional activation domain, playing a crucial role in the two-hybrid system, a powerful method for studying protein-protein interactions. This system utilizes genetically engineered yeast or bacteria, where a ′bait′ protein is fused to a DNA-binding domain, and a ′prey′ protein is linked to a transcriptional activation domain, resulting in the activation of reporter genes upon their interaction. B42 protein is particularly valuable as an alternative activation domain, especially in configurations using the LexA DNA-binding domain, enhancing the versatility of the two-hybrid system across various organisms. B42 protein′s ability to facilitate robust transcriptional activation is essential for accurately mapping interactomes and conducting proteomics studies, as this function ensures specific protein localization within the cell and allows for detailed exploration of cellular functions and interactions.

    For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

    Alexa Fluor® is a trademark of Molecular Probes Inc., OR., USA

    LI-COR® and Odyssey® are registered trademarks of LI-COR Biosciences

    B42 Antibody (E-2) References:

    1. GAL4 fusion vectors for expression in yeast or mammalian cells.  |  Sadowski, I., et al. 1992. Gene. 118: 137-41. PMID: 1511877
    2. The two-hybrid system: a method to identify and clone genes for proteins that interact with a protein of interest.  |  Chien, CT., et al. 1991. Proc Natl Acad Sci U S A. 88: 9578-82. PMID: 1946372
    3. Pheromone-dependent phosphorylation of the yeast STE12 protein correlates with transcriptional activation.  |  Song, D., et al. 1991. Genes Dev. 5: 741-50. PMID: 2026326
    4. Activators and targets.  |  Ptashne, M. and Gann, AA. 1990. Nature. 346: 329-31. PMID: 2142753
    5. A novel genetic system to detect protein-protein interactions.  |  Fields, S. and Song, O. 1989. Nature. 340: 245-6. PMID: 2547163
    6. A model fungal gene regulatory mechanism: the GAL genes of Saccharomyces cerevisiae.  |  Johnston, M. 1987. Microbiol Rev. 51: 458-76. PMID: 2830478
    7. Deletion analysis of GAL4 defines two transcriptional activating segments.  |  Ma, J. and Ptashne, M. 1987. Cell. 48: 847-53. PMID: 3028647

    Ordering Information

    Product NameCatalog #UNITPriceQtyFAVORITES

    B42 Antibody (E-2)

    sc-377101
    200 µg/ml
    $322.00

    B42 Antibody (E-2): m-IgG Fc BP-HRP Bundle

    sc-527580
    200 µg Ab; 10 µg BP
    $361.00

    B42 Antibody (E-2): m-IgG1 BP-HRP Bundle

    sc-532953
    200 µg Ab; 20 µg BP
    $361.00

    B42 Antibody (E-2) AC

    sc-377101 AC
    500 µg/ml, 25% agarose
    $424.00

    B42 Antibody (E-2) HRP

    sc-377101 HRP
    200 µg/ml
    $322.00

    B42 Antibody (E-2) FITC

    sc-377101 FITC
    200 µg/ml
    $336.00

    B42 Antibody (E-2) PE

    sc-377101 PE
    200 µg/ml
    $349.00

    B42 Antibody (E-2) Alexa Fluor® 488

    sc-377101 AF488
    200 µg/ml
    $364.00

    B42 Antibody (E-2) Alexa Fluor® 546

    sc-377101 AF546
    200 µg/ml
    $364.00

    B42 Antibody (E-2) Alexa Fluor® 594

    sc-377101 AF594
    200 µg/ml
    $364.00

    B42 Antibody (E-2) Alexa Fluor® 647

    sc-377101 AF647
    200 µg/ml
    $364.00

    B42 Antibody (E-2) Alexa Fluor® 680

    sc-377101 AF680
    200 µg/ml
    $364.00

    B42 Antibody (E-2) Alexa Fluor® 790

    sc-377101 AF790
    200 µg/ml
    $364.00

    B42 (E-2) Neutralizing Peptide

    sc-377101 P
    100 µg/0.5 ml
    $69.00

    What application is the blocking peptide sc-377101 P appropriate for?

    Asked by: TinTin
    Thank you for your question. The blocking peptide is intended for use as a negative control, by pre-adsorbing the mouse monoclonal antibody against the antigen. For full protocol details, please contact our Technical Services Department or view our online protocol here: https://www.scbt.com/scbt/resources/protocols/peptide-neutralization
    Answered by: Technical Support
    Date published: 2023-12-13
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    Rated 5 out of 5 by from Great featuresI used this antibody to do the experiment, get a good effect, very beautiful data
    Date published: 2024-09-13
    Rated 5 out of 5 by from Good productI brought this product a month ago and i am so happy that i did it
    Date published: 2024-08-20
    Rated 5 out of 5 by from the good protein-protein interactionsThis approach is facilitated by the finding that higher eukaryotes lack endogenous proteins that enhance transcription from the consensus GAL4-binding site. Fusions between GAL4 (aa 1-147) and activating domains from a variety of transcriptional regulatory proteins can activate transcription in yeast, plant, insects and mammalian cells. A unique “two-hybrid” system has been developed using GAL4 fusions in yeast to identify specific protein-protein interactions.
    Date published: 2017-02-01
    Rated 5 out of 5 by from Great antibody for WBI used this antibody to do the experiment, get a good effect, very beautiful data,in WB in,at 1:500 dilution.
    Date published: 2017-01-26
    Rated 5 out of 5 by from excellentWestern blot data of full-length B42 fusion protein is very clear.
    Date published: 2016-11-06
    Rated 5 out of 5 by from Good dataI used B42 a month ago and it provided excellent WB data.
    Date published: 2016-11-05
    Rated 5 out of 5 by from Good Western blot data of fullGood Western blot data of full-length B42 fusion protein -SCBT QC
    Date published: 2013-03-29
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    B42 Antibody (E-2) is rated 5.0 out of 5 by 7.
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