MDM2 GI:89993693 mouse double minute 2 homolog isoform MDM2d 1 mvrsrqmcnt nmsvptdgav ttsqipaseq etlvrpkpll lkllksvgaq 50 51 kdtytmkevl fylgqyimtk rlydekqqhi vycsndllgd lfgvpsfsvk 100 101 ehrkiytmiy rnlvvvnqqe ssdsgtsvse nrchleggsd qkdlvqelqe 150 151 ekpktkkrvw nlvcplmpln lv