This allele is a derivative of Akt2tm1Mbb. Cre-mediated recombination in vivo under the control of a 6 kb 5'-flanking sequence from the Pou3f4 gene excised the floxed exons 4 and 5 in the germline. The excision of exons 4 and 5 results in a frameshift mutation that would lead to a premature termination even if the remaining exon 3 were to splice to exon 6. Exon 5 encodes the lysine residue necessary for catalytic activity. Western blot analyses using a polyclonal antibody did not detect protein in liver, muscle, and isolated adipocytes from homozygous mice. (J:71491)