| Primary Identifier | MGI:2181559 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Jchain |
| Transmission | Germline | Strain of Origin | 129X1/SvJ |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | The gene was disrupted by insertion of a PGK-neo cassette into exon 2 via homologous recombination. Homozygous mutant animals lacked gene expression as demonstrated by Northern blot analysis of spleen cells and Western blot analysis of serum. |