| Primary Identifier | MGI:2387031 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Oprk1 |
| Transmission | Germline | Strain of Origin | 129S2/SvPas |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | Exon 1 was disrupted by the insertion of a neomycin selection cassette. The insertion deleted sequence encoding amino acids 1 through 79. A radiolabeled binding assay demonstrated a lack of endogenous function. |