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Transgene Detail
Symbol: Tg(CAG-cre/Esr1*)5Amc
Name: transgene insertion 5, Andrew P McMahon
MGI ID: MGI:2182767
Synonyms: CAG-CreEr, CAGG-Cre, CaggCreER, CAGGCre-ER, CAGGCre-ERTM, CAGGCre-ERtm line 5.8, CAGGS-CreER, CAGGS-CreErT, CMV-creERT, Cre-ER, Cre-ERTM, CreESRT, ER-cre, Tg:Cag-Cre/Esr1, Tg(CAG-cre/Esr1)5Amc, TgCAGGCreER, TgCreER, Tg(cre/Esr1)5Amc, uCreERT
Transgene: Tg(CAG-cre/Esr1*)5Amc  Location: unknown  
Alliance: Tg(CAG-cre/Esr1*)5Amc page
Strain of Origin:  (C57BL/6 x CBA)F1
Transgene Type:    Transgenic (Inducible, Recombinase)
Inducer:    tamoxifen
Mutation:    Insertion
Tg(CAG-cre/Esr1*)5Amc expression driven by 1 gene
Mutation detailsThis transgene expresses a fusion protein consisting of Cre recombinase joined to the ligand-binding domain of a mouse estrogen receptor modified to bind to 4-hydroxytamoxifen, but not to endogenous estrogen. The CAG promoter, containing a chicken beta actin promoter/enhancer coupled with the cytomegalovirus immediate-early (CMV-IE) enhancer, drives high levels of expression in most tissues. In the presence of tamoxifen, the fusion protein is transported into the nucleus, where cre can excise loxP-flanked segments from conditionally modified genes. (J:76130)
 Tissue activity of this recombinase allele
Driver: CAG (chicken)
Summary of all recombinase alleles driven by CAG.

View phenotypes and curated references for all genotypes (concatenated display).
Disease models
In Structures Affected by this Mutation: 2 anatomical structure(s)
Tumor Data
List all tumor models in MMHCdb carrying Tg(CAG-cre/Esr1*)5Amc
Find Mice (IMSR)
Mouse strains and cell lines available from the International Mouse Strain Resource (IMSR)
Carrying this Mutation:  Mouse Strains: 9 strains available      Cell Lines: 0 lines available
Homozygous transgenic mice are not viable or fertile. Hemizygous transgenic mice are viable, fertile, normal in size and do not display any gross physical or behavioral abnormalities.

In transgenic mice the mutant mouse estrogen receptor does not bind natural ligand at physiological concentrations but will bind the synthetic ligand, 4-hydroxytamoxifen. Restricted to the cytoplasm, the Cre/Esr1 fusion protein can only gain access to the nuclear compartment after exposure to tamoxifen. When crossed with a strain containing loxP sites flanking a sequence of interest, tamoxifen induced, Cre-mediated targeted deletions are generated in the offspring. Tamoxifen administration will induce Cre recombination in developing embryos of treated mothers and in cultured cells derived from transgenic mice.

Note that this transgene does not contain the cre/ERT2 fusion but was mistakenly referred to by the synonym CAG-CreERT2 in publication. J:136965

Note that this transgene does not contain the cre/ERT2 fusion but was mistakenly referred to by the synonym CAGG-CreERT2 in publication. J:130851

Original:  J:76130 Hayashi S, et al., Efficient recombination in diverse tissues by a tamoxifen-inducible form of cre: a tool for temporally regulated gene activation/inactivation in the mouse. Dev Biol. 2002 Apr 15;244(2):305-18
All:  738 reference(s)

Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
MGI 6.23
The Jackson Laboratory