| Primary Identifier | MGI:2155567 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Chrm4 |
| Transmission | Germline | Strain of Origin | 129S6/SvEvTac |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A genomic fragment containing sequences encoding the region between the second transmembrane loop and the third intracellular loop was replaced by a neomycin resistance cassette. |