| Primary Identifier | MGI:3036308 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Ddb2 |
| Transmission | Germline | Strain of Origin | 129S/SvEv |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | Exons 4 through 7 were replaced with a neomycin selection cassette via homologous recombination. The absence of expression in homozygous mutant MEFs was confirmed by RT-PCR and Western blot analysis. |