>1Z1A_1|Chains A, B|Regulatory protein SIR1|Saccharomyces cerevisiae (4932) GSHMENMWAAEKKFSTEEEYVSPRFLVADGFLIDLAEEKPINPKDPRLLTLLKDHQRAMIDQMNLVKWNDFKKYQDPIPLKAKTLFKFCKQIKKKFLRGADFKLHTLPTEANLKYEPERMTVLASCVPILLDDQTVQYLYDD