| Primary Identifier | MGI:3573932 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Smc1b |
| Transmission | Germline | Strain of Origin | 129S6/SvEvTac |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | Exon 10, which codes for 40% of the hinge domain, essential to the formation of Smc heterodimers, was targeted for replacement by a tk-neo cassette. Immunoblotting of testis nuclear extracts confirmed the absence of wild-type protein. |