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Targeted Allele Detail
Symbol: Krastm4Tyj
Name: Kirsten rat sarcoma viral oncogene homolog; targeted mutation 4, Tyler Jacks
MGI ID: MGI:2429948
Synonyms: caKRas, KR, Kras2tm14Tyj, Kras2tm4Tyj, KrasG12D, K-RasG12D, K-Ras(G12D)fl, K-RasL, KrasLox, K-rasLSL, KrasLSL-G12D, Lox-Stop-Lox-KrasG12D, LSL-KrasG12D, LSL-K-rasG12D, LSL-K-ras G12D, LSL-KrasG12D, LSL-Kras G12D
Gene: Kras  Location: Chr6:145216699-145250239 bp, - strand  Genetic Position: Chr6, 77.37 cM, cytoband G2
Pancreatic tumors in Krastm4Tyj/Krastm4Tyj Trim33tm1Los/Trim33tm1Los Tg(Pdx1-cre)89.1Dam/0 and Krastm4Tyj/Krastm4Tyj Cdkn2atm4Rdp/Cdkn2atm4Rdp Tg(Pdx1-cre)89.1Dam/0 mice

Show the 5 phenotype image(s) involving this allele.

Germline Transmission:  Earliest citation of germline transmission: J:73445
Parent Cell Line:  J1 (ES Cell)
Strain of Origin:  129S4/SvJae
Allele Type:    Targeted (Conditional ready, No functional change)
Mutation:    Insertion
Mutation detailsBy homologous recombination in ES cells, the Kras2 locus was targeted with a cassette containing an oncogenic form of the KRAS2 protein in which the glycine at position 12 had been substituted with a an aspartic acid. A loxP flanked stop codon was included upstream of the inserted Kras2 sequence, such that the mutant transcript would be expressed only after cre-mediated recombination. (J:73445)
View phenotypes and curated references for all genotypes (concatenated display).
Disease models
In Structures Affected by this Mutation: 44 anatomical structures
Find Mice (IMSR)
Mouse strains and cell lines available from the International Mouse Strain Resource (IMSR)
Carrying this Mutation:  Mouse Strains: 8 strains available      Cell Lines: 0 lines available
Carrying any Kras Mutation:  37 strains or lines available
Original:  J:73445 Jackson EL, et al., Analysis of lung tumor initiation and progression using conditional expression of oncogenic K-ras. Genes Dev. 2001 Dec 15;15(24):3243-8
All:  1011 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 6.16
The Jackson Laboratory