DNA聚合酶δ(DNA polymerase delta)為真核生物體內的一種酶複合體,可進行DNA複製及修復。DNA聚合酶δ由四個次單元組成:POLD1、POLD2、POLD3,以及POLD4[1]。本酵素可進行延遲股及領先股的複製[2][3]。若PCNA存在,該酵素的持續效能會增強。
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