A cDNA of Map2k1 (tagged with Myc and flanked by loxP sites), an frt-flanked neomycin selection cassette, and a cDNA of Map2k2 were inserted into the first exon of Mek1. Western blot analysis showed that both endogenous Map2k1 protein and the Myc-tagged Map2k1 protein are expressed in heterozygous embryonic stem (ES) cells. (J:258488)
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cx: complex: > 1 genome feature ot: other: hemizygous, indeterminate,... (F): Female
(M): Male
N: normal phenotype
(#): related diseases count