| Primary Identifier | MGI:4397679 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Prss21 |
| Transmission | Germline | Strain of Origin | Not Specified |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | The genomic sequence spanning exon 4, 5, and the coding region of exon 6 was replaced with a neo cassette. The absence of protein expression was confirmed by western blot analysis on testis extract. |