| Primary Identifier | MGI:5140188 | Allele Type | Targeted |
| Attribute String | Modified regulatory region | Gene | Rr27 |
| Transmission | Germline | Strain of Origin | 129P2/OlaHsd |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | Using site-directed mutagenesis, the 0.9 kb intervening sequence (IVS) between the CTCF sites was deleted. A floxed neomycin resistance gene cassette inserted downstream of the modified sequence was removed by cre-mediated recombination. The size and CpG content of the imprinting control region (ICR) are decreased 50% and 35%, respectively. |