| Primary Identifier | MGI:3805956 | Allele Type | Targeted |
| Attribute String | Null/knockout, Reporter | Gene | Smad1 |
| Transmission | Germline | Strain of Origin | 129P2/OlaHsd |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | The exon encoding part of the MH1 domain and linker region was replaced with a lacZ and neo cassette. The absence of transcript was confirmed by RT-PCR analysis on E7.5 total embryo extracts. |