| Primary Identifier | MGI:1857752 | Allele Type | Targeted |
| Attribute String | Null/knockout | Gene | Map2k3 |
| Transmission | Germline | Strain of Origin | 129S1/Sv-Oca2<+> Tyr<+> Kitl<+> |
| Is Recombinase | false | Is Wild Type | false |
| description | Homozygous mutant mice are viable and appear normal, healthy, and fertile with no defects in lymphocyte development (thymocytes, splenocytes, and bone-marrow derived dendritic cells). Compared to control sibs, however, macrophages and primary embryonic fibroblasts from mutant mice show reduced activation of p38 MAPK. Cytokine IL-12 (encoded for by Il12a and Il12b) is strongly reduced in mutant macrophages and dendritic cells. Mutant fibroblasts have a defective response to Tnf. Mutant mice also have defective T-helper cells with respect to the ability to produce Ifng in response to antigen stimulation of keyhole limpet hemocyanin (KLH) both in vitro and in vivo (J:54078, J:54309). |
| molecularNote | A neomycin resistance cassette replaced a 1.5kb region that includes exons 8 and 9, which encode amino acids 217-221 of the protein. This region includes the sequences containing the dual phosphorylation sites (serine and threonine) that are required for activation of the protein. Northern blot and Western blot analyses did not detect expression from this allele in homozygous mutant mice. |
