| Primary Identifier | MGI:1857551 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Kras |
| Transmission | Germline | Strain of Origin | 129S/SvEv-Gpi1<c> |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A neomycin cassette replaces the 3' part of exon 1, which encodes a part of the effector domain essential for K-ras activity. |