| Primary Identifier | MGI:2384488 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Sim2 |
| Transmission | Germline | Strain of Origin | 129S4/SvJae |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | Sequence, encoding the initiator methionine and the first 47 amino acids of the basic helix-loop-helix domain, was deleted from exon 1 by the insertion of a neomycin cassette via homologous recombination. |