| Primary Identifier | MGI:5489932 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Cbx4 |
| Transmission | Germline | Strain of Origin | 129S2/SvPas |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A loxP site was inserted upstream of exon 1 and a loxP site and FRT flanked neo cassette were inserted downstream of exon 2 via homologous recombination. Flp and cre mediated recombination removed the neo cassette and exons 1 and 2. |