The Cre Deleter mouse was developed by Artemis Pharmaceuticals (now Taconic). The mutant was created by a targeted mutation knock in of Cre into the Gt(ROSA)26 locus. Cre is expressed under the control of the Gt(ROSA)26Sor gene. Additional sequence elements are adenovirus major late transcript splice acceptor sequence from the intron 1/exon2 boundary situated 5´ and FLP recombinase target (FRT) sequences (Saccharomyces cerevisiae) situated 3´ of Cre. Targeting occurred in C57BL/6N ES cells. The colony is maintained by breeding heterozygotes to wild type C57BL/6NTac mice.
Otto C, Fuchs I, Kauselmann G, Kern H, Zevnik B, Andreasen P, Schwarz G, Altmann H, Klewer M, Schoor M, Vonk R, Fritzemeier KH. (2009) GPR30 does not mediate estrogenic responses in reproductive organs in mice. Biol Reprod 80(1):34-41.