| Primary Identifier | MGI:4359726 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Grk4 |
| Transmission | Germline | Strain of Origin | 129S4/SvJaeSor |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A NsiI fragment containing exon 7 was replaced with a neomycin resistance cassette. |