Recombinase cre (UniProt P06956) is encoded by the cre gene (Gene ID 2777477) of bacteriophage P1. Cre (Causes recombination with Cyclization recombinase) is a 38 kDa DNA recombinase derived from the P1 bacteriophage. It is highly specific for a 34-bp DNA sequence motif called loxP (locus of X-over P1) found in P1 DNA. The loxP site is composed of a variable asymmetric 8-bp sequence in between two sets of 13-bp palindromic sequences (ATAACTTCGTATA-NNNTANNN-TATACGAAGTTAT). Two cre recombinase proteins, each binds to one of the two 13-bp palindromic sequences at a loxP site, form a dimer. This dimer then binds to a second dimer on another loxP site to form a tetramer. The two sites joined by the tetramer are parallel in orientation and the double stranded DNA is cut at both loxP sites. The strands are then rejoined with DNA ligase. Because the Cre gene and loxP sites are not native to most species, they are often introduced into target cells or tissues and employed as a means to precisely control the expression of genes both in cultured cells in vitro and in animals vivo.
Synonyms: Recombinase cre
Application: Research CategoryEpigenetics & Nuclear Function
Other Notes: Concentration: Please refer to lot specific datasheet.