A primase subunit essential for efficient primer synthesis by an archaeal eukaryotic-type primase.
A primase subunit essential for efficient primer synthesis by an archaeal eukaryotic-type primase.
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古细菌真核型引物酶有效合成引物所必需的引物酶亚基
DOI:
10.1038/ncomms8300
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发表时间:
2015-06-22
影响因子:
16.6
通讯作者:
Huang L
中科院分区:
文献类型:
--
作者:
Liu B;Ouyang S;Makarova KS;Xia Q;Zhu Y;Li Z;Guo L;Koonin EV;Liu ZJ;Huang L
Archaea encode a eukaryotic-type primase comprising a catalytic subunit (PriS) and a noncatalytic subunit (PriL). Here we report the identification of a primase noncatalytic subunit, denoted PriX, from the hyperthermophilic archaeonSulfolobus solfataricus. Like PriL, PriX is essential for the survival of the organism. The crystallographic analysis complemented by sensitive sequence comparisons shows that PriX is a diverged homologue of the C-terminal domain of PriL but lacks the iron–sulfur cluster. Phylogenomic analysis provides clues on the origin and evolution of PriX. PriX, PriL and PriS form a stable heterotrimer (PriSLX). Both PriSX and PriSLX show far greater affinity for nucleotide substrates and are substantially more active in primer synthesis than the PriSL heterodimer. In addition, PriL, but not PriX, facilitates primer extension by PriS. We propose that the catalytic activity of PriS is modulated through concerted interactions with the two noncatalytic subunits in primer synthesis.
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DOI:
10.1073/pnas.0812665106
发表时间:
2009-07-14
影响因子:
11.1
作者:
Glas, Andreas F.;Maul, Melanie J.;Carell, Thomas
通讯作者:
Carell, Thomas
影响因子:
4.8
作者:
Galal, Wiebke Chemnitz;Pan, Miao;Hurwitz, Jerard
通讯作者:
Hurwitz, Jerard
影响因子:
5.8
作者:
Cuff, JA;Clamp, ME;Barton, GJ
通讯作者:
Barton, GJ
影响因子:
4.8
作者:
Galal, Wiebke Chemnitz;Pan, Miao;Hurwitz, Jerard
通讯作者:
Hurwitz, Jerard
影响因子:
5.6
作者:
Le Breton, Magali;Henneke, Ghislaine;Raffin, Jean-Paul
通讯作者:
Raffin, Jean-Paul