Cell Signaling Technology

Product Pathways - Tag Antibodies

Cre Recombinase Antibody #7803

Applications Reactivity Sensitivity MW (kDa) Source
W All Transfected Only 38 Rabbit

Applications Key:  W=Western Blotting
Reactivity Key: All=All species expected
Species cross-reactivity is determined by western blot.

Protocols

Specificity / Sensitivity

Cre Recombinase Antibody recognizes transfected levels of total Cre recombinase protein.

Source / Purification

Polyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to residues surrounding Asp141 of Cre recombinase protein. Antibodies are purified by protein A and peptide affinity chromatography.

Western Blotting

Western Blotting

Western blot analysis of extracts from 293T cells, mock-transfected (-) or transfected (+) with a Cre recombinase plasmid, using Cre Recombinase Antibody (upper) and β-Actin (13E5) Rabbit mAb #4970 (lower).

Background

Cre recombinase is a bacteriophage-P1 enzyme required for maintenance of the phage genome as a monomeric plasmid in the lysogenic state (1,2). This enzyme mediates a site-specific recombination between two 34 base pair loxP sites. This reaction can be carried out in vitro, indicating that it does not require accessory factors (3). The Cre/Lox system has been used for a number of in vitro and in vivo applications including targeted gene deletions (4) and gene-specific humanized animal models (5). Resolution of the crystal structure of the Cre-Lox complex revealed that two Cre molecules interact with a single Lox site (6).

  1. Abremski, K. et al. (1983) Cell 32, 1301-11.
  2. Sternberg, N. et al. (1981) Cold Spring Harb Symp Quant Biol 45 Pt 1, 297-309.
  3. Abremski, K. and Hoess, R. (1984) J Biol Chem 259, 1509-14.
  4. Qin, M. et al. (1994) Proc Natl Acad Sci U S A 91, 1706-10.
  5. Lakso, M. et al. (1992) Proc Natl Acad Sci U S A 89, 6232-6.
  6. Guo, F. et al. (1997) Nature 389, 40-6.

Application References

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For Research Use Only. Not For Use In Diagnostic Procedures.

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