| Primary Identifier | MGI:2669500 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Ighg1 |
| Transmission | Germline | Strain of Origin | 129P2/OlaHsd |
| Is Recombinase | false | Is Wild Type | false |
| molecularNote | This allele, which encodes a truncated protein capable of localizing to the membrane but lacking the cytoplasmic tail, was generated by homologous recombination of a targeting vector containing a nonsense mutation at the fourth codon of the cytoplasmic tail. In addition, single loxP sites were left flanking the exon encoding the transmembrane domain. |