| Primary Identifier | MGI:5643936 | Allele Type | Targeted |
| Gene | Nfkb1 | Transmission | Germline |
| Strain of Origin | Not Specified | Is Recombinase | false |
| Is Wild Type | false |
| molecularNote | Exon 12 was replaced with a modified exon containing nucleotide substitutions that resulted in the amino acid substitution of alanine for serine at position 340 (S340A). Cre-mediated recombination removed the floxed neomycin resistance inserted downstream of the modified exon. |