| Primary Identifier | MGI:2178542 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Comt |
| Transmission | Germline | Strain of Origin | 129S4/SvJaeSor |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A neomycin resistance cassette replaced a genomic fragment containing exons 2-4. Northern blot analysis on RNA derived from brain and liver of homozygous mice demonstrated that no detectable transcript was produced from this allele. Activity assays confirmed that no functional protein was expressed in homozygotes. |