| Primary Identifier | MGI:2179741 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Syp |
| Transmission | Germline | Strain of Origin | Not Specified |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | A neomycin resistance cassette replaced exon 3 and flanking sequences. Western blot analysis on brain lysates from homozygous mice confirmed that no detectable encoded protein was present. |