▁DNA . ▁ ▁The ▁A PE 2 ▁ 3 '- ph osph odi ester ase ▁activity ▁can ▁remove ▁modified ▁ 3 '- termin i , ▁such ▁as ▁ 3 '- ph osph og ly col ate ▁as ▁well ▁as ▁mismatch ed ▁nucle ot ides ▁from ▁the ▁ 3 ' ▁primer ▁end ▁of ▁DNA . ▁ ▁A PE 2 ▁is ▁required ▁for ▁A TR - Ch k 1 ▁DNA ▁damage ▁response ▁following ▁ox id ative ▁stress . ▁ ▁References ▁M ole cular ▁graphics ▁images ▁were ▁produced ▁using ▁the ▁U CS F ▁Ch im era ▁package ▁from ▁the ▁Resource ▁for ▁Bio comput ing , ▁Visual ization , ▁and ▁In format ics ▁at ▁the ▁University ▁of ▁California , ▁San ▁Francisco ▁( supported ▁by ▁N I H ▁P 4 1 ▁R R - 0 1 0 8 1 ). ▁ ▁External ▁links ▁▁ ▁Basic ▁Definition ▁of ▁AP ▁end on uc lease ▁ ▁AP ▁end on uc leases ▁family ▁ 1 ▁in ▁PRO S ITE ▁ ▁AP ▁end on uc leases ▁family ▁ 2 ▁in ▁PRO S ITE ▁ ▁Application ▁in ▁Long ▁P atch ▁Base ▁Ex c ision ▁Rep air ▁ ▁Pur ification ▁and ▁character ization ▁of ▁an ▁ap ur in ic / ap yr im id in ic ▁end on uc lease ▁from ▁He La ▁cells ▁ ▁Category : En zym es <0x0A> </s> ▁Samuel ▁Lu cc ock ▁Black ▁( Dec ember ▁ 2 2 , ▁ 1 8 5 9 ▁– ▁June ▁ 1 8 , ▁ 1 9 2 9 ) ▁was ▁a ▁Democratic ▁politician