79.下列何者為DNA polymerase之proofreading的機制?
(A)5′→ 3′ exonuclease activity
(B)3′→ 5′ exonuclease activity
(C)RNase activity
(D)DNA ligase activity
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統計: A(324), B(727), C(50), D(65), E(0) #1034985
統計: A(324), B(727), C(50), D(65), E(0) #1034985
詳解 (共 4 筆)
#5552532
(B) 3'→5' exonuclease:proof-reading
(C) 5'→3' exonuclease:移除 primer
*補充
「原核」DNA polymerase I:三大功能
(1) 補 lagging strand 的 gap
(2) 3'→5' exonuclease:proof-reading
(3) 5'→3' exonuclease:移除 primer
「原核」DNA polymerase III
(1) 複製 lagging strand
(2) 複製 leading strand
「真核」DNA polymerase α:複製 lagging strand
「真核」DNA polymerase δ:複製 leading strand
「真核」DNA polymerase β:修錯
「真核」DNA polymerase γ:複製粒腺體DNA
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