| Primary Identifier | MGI:3778375 | Allele Type | Targeted |
| Gene | Mstn | Transmission | Germline |
| Strain of Origin | (129X1/SvJ x 129S1/Sv)F1-Kitl<+> | Is Recombinase | false |
| Is Wild Type | false |
| molecularNote | The first coding region was replaced with one that contained a nucleotide substitution resulting in an amino acid substitution of alanine for aspartic acid at position 76. A floxed neo cassette was inserted upstream of the C-terminusd encoding exon and removed by germ-line, cre-mediated recombination. |