| Primary Identifier | MGI:1857666 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Smad5 |
| Transmission | Germline | Strain of Origin | 129S7/SvEvBrd-Hprt1<b-m2> |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A PGK-hprt expression cassette replaced exon 2 and its flanking sequences. In addition, a transcriptional terminator sequence was introduced into intron 1. |