| Primary Identifier | MGI:2149587 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Cdk4 |
| Transmission | Germline | Strain of Origin | 129S1/Sv-Oca2<+> Tyr<+> Kitl<+> |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A neomycin cassette replaced a 3' portion of exon 1 and all of exons 2 - 5. Western blot analysis on extracts derived from fibroblasts of homozygous mice detected no encoded protein. |