CheckMate™ Mammalian Two-Hybrid System

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Powerful System for Detecting Protein:Protein Interactions In Vivo

  • Mammalian system for studying interactions in cell line of choice
  • Study post-translational modifications including glycosylation, phosphorylation and acylation


Catalog number selected: E2440

$ 935.00
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CheckMate™ Mammalian Two-Hybrid System
1 system
$ 935.00
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Two-hybrid systems are extremely powerful methods for detecting protein:protein interactions in vivo. The basis of two-hybrid systems is the modular domains found in some transcription factors: a DNA-binding domain, which binds to a specific DNA sequence, and a transcriptional activation domain, which interacts with the basal transcriptional machinery. A transcriptional activation domain in association with a DNA-binding domain will promote the assembly of RNA polymerase II complexes at the TATA box and increase transcription.

In the CheckMate™ Mammalian Two-Hybrid System the DNA-binding domain and the transcriptional activation domain, produced by separate plasmids, are closely associated when one protein ("X") fused to a DNA-binding domain interacts with a second protein ("Y") fused to a transcriptional activation domain. In this system, interaction between proteins X and Y results in transcription of a reporter gene.

For more information, see the Protocols & Applications Guide.


  • Confirming suspected interactions between two proteins and identifying domains/residues involved in protein:protein interactions.


  1. Sadowski, I. et al. (1988) Nature 335, 563–4.

pACT Vector GenBank® Accession Number AF264723 and vector sequence text file.


pBIND Vector GenBank® Accession Number AF264722 and vector sequence text file.


pG5luc Vector GenBank® Accession Number AF264724 and vector sequence text file.


What's in the box?

Item Part # Size Available Separately

pBIND Vector

E245A 1 × 20μg View Product

pACT Vector

E246A 1 × 20μg View Product

pBIND-Id Control Vector

E247A 1 × 20μg View Product

pACT-MyoD Control Vector

E248A 1 × 20μg View Product

pG5luc Vector

E249A 2 × 20μg

Certificate of Analysis

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Use Restrictions

For Research Use Only. Not for Use in Diagnostic Procedures.

Storage Conditions


Patents and Disclaimers

BY USE OF THIS PRODUCT, RESEARCHER AGREES TO BE BOUND BY THE TERMS OF THIS LIMITED USE LABEL LICENSE. If the researcher is not willing to accept the terms of this label license, and the product is unused, Promega will accept return of the unused product and provide the researcher with a full refund.
Researchers may use this product for research use only, no commercial use is allowed. "Commercial use" means any and all uses of this product and derivatives by a party for money or other consideration and may include but is not limited to use in: (1) product manufacture; and (2) to provide a service, information or data; and/or resale of the product or its derivatives, whether or not such product or derivatives are resold for use in research. Researchers shall have no right to modify or otherwise create variations of the nucleotide sequence of the luciferase gene except that researchers may: (1) create fused gene sequences provided that the coding sequence of the resulting luciferase gene has no more than four deoxynucleotides missing at the affected terminus compared to the intact luciferase gene sequence, and (2) insert and remove nucleic acid sequences in splicing research predicated on the inactivation or reconstitution of the luminescence of the encoded luciferase. No other use or transfer of this product or derivatives is authorized without the prior express written consent of Promega. In addition, researchers must either: (1) use luminescent assay reagents purchased from Promega for all determinations of luminescence activity of this product and its derivatives; or (2) contact Promega to obtain a license for use of the product and its derivatives. Researchers may transfer derivatives to others for research use provided that at the time of transfer a copy of this label license is given to the recipients and recipients agree to be bound by the terms of this label license. With respect to any uses outside this label license, including any diagnostic, therapeutic or prophylactic uses, please contact Promega for supply and licensing information. PROMEGA MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING FOR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE WITH REGARDS TO THE PRODUCT. The terms of this label license shall be governed under the laws of the State of Wisconsin, USA. This label license relates to Promega patents and/or patent applications on improvements to the luciferase gene.

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