>4OQ3_1|Chains A, B, C, D|E3 ubiquitin-protein ligase Mdm2|Homo sapiens (9606) GSQIPASEQETLVRPKPELLKLLKSVGAQKDTYTMKEVLFYLGQYIMTKRLYDEKQQHIVYCSNDLLGDLFGVPSFSVKEHRKIYTMIYRNLVVVN