Novel inhibition of archaeal family-D DNA polymerase by uracil.
Novel inhibition of archaeal family-D DNA polymerase by uracil.
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DOI:
10.1093/nar/gkt083
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发表时间:
2013-04
影响因子:
14.9
通讯作者:
Henneke G
中科院分区:
文献类型:
--
作者:
Richardson TT;Gilroy L;Ishino Y;Connolly BA;Henneke G
Archaeal family-D DNA polymerase is inhibited by the presence of uracil in DNA template strands. When the enzyme encounters uracil, following three parameters change: DNA binding increases roughly 2-fold, the rate of polymerization slows by a factor of ∼5 and 3′–5′ proof-reading exonuclease activity is stimulated by a factor of ∼2. Together these changes result in a significant decrease in polymerization activity and a reduction in net DNA synthesis. Pol D appears to interact with template strand uracil irrespective of its distance ahead of the replication fork. Polymerization does not stop at a defined location relative to uracil, rather a general decrease in DNA synthesis is observed. ‘Trans’ inhibition, the slowing of Pol D by uracil on a DNA strand not being replicated is also observed. It is proposed that Pol D is able to interact with uracil by looping out the single-stranded template, allowing simultaneous contact of both the base and the primer-template junction to give a polymerase-DNA complex with diminished extension ability.
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DOI:
10.1016/j.bbapap.2009.07.021
发表时间:
2010-05
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
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通讯作者:
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影响因子:
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影响因子:
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作者:
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DOI:
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发表时间:
1999-03-30
影响因子:
11.1
作者:
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通讯作者:
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影响因子:
14.8
作者:
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