| Primary Identifier | MGI:3716924 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Spem1 |
| Transmission | Germline | Strain of Origin | (129X1/SvJ x 129S1/Sv)F1-Kitl<+> |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A targeting vector was designed to replace the 250 bp long 5' UTR and exons 1-3, except for the last 88 bp of exon 3, with a pgk-hprt cassette. Absence of transcript and protein was confirmed in mutant testis by Northern blot and Western blot analysis, respectively. |