The RNase H-like superfamily: new members, comparative structural analysis and evolutionary classification.
The RNase H-like superfamily: new members, comparative structural analysis and evolutionary classification.
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RNase H类超级家族:新成员,比较结构分析和进化分类。
DOI:
10.1093/nar/gkt1414
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发表时间:
2014-04
影响因子:
14.9
通讯作者:
Bujnicki JM
中科院分区:
文献类型:
--
作者:
Majorek KA;Dunin-Horkawicz S;Steczkiewicz K;Muszewska A;Nowotny M;Ginalski K;Bujnicki JM
Ribonuclease H-like (RNHL) superfamily, also called the retroviral integrase superfamily, groups together numerous enzymes involved in nucleic acid metabolism and implicated in many biological processes, including replication, homologous recombination, DNA repair, transposition and RNA interference. The RNHL superfamily proteins show extensive divergence of sequences and structures. We conducted database searches to identify members of the RNHL superfamily (including those previously unknown), yielding >60 000 unique domain sequences. Our analysis led to the identification of new RNHL superfamily members, such as RRXRR (PF14239), DUF460 (PF04312, COG2433), DUF3010 (PF11215), DUF429 (PF04250 and COG2410, COG4328, COG4923), DUF1092 (PF06485), COG5558, OrfB_IS605 (PF01385, COG0675) and Peptidase_A17 (PF05380). Based on the clustering analysis we grouped all identified RNHL domain sequences into 152 families. Phylogenetic studies revealed relationships between these families, and suggested a possible history of the evolution of RNHL fold and its active site. Our results revealed clear division of the RNHL superfamily into exonucleases and endonucleases. Structural analyses of features characteristic for particular groups revealed a correlation between the orientation of the C-terminal helix with the exonuclease/endonuclease function and the architecture of the active site. Our analysis provides a comprehensive picture of sequence-structure-function relationships in the RNHL superfamily that may guide functional studies of the previously uncharacterized protein families.
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影响因子:
14.9
作者:
Ginalski, K;von Grotthuss, M;Rychlewski, L
通讯作者:
Rychlewski, L
影响因子:
64.5
作者:
Elkayam E;Kuhn CD;Tocilj A;Haase AD;Greene EM;Hannon GJ;Joshua-Tor L
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3.5
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Ohgi, T
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作者:
Hsiao, Yu-Yuan;Yang, Che-Chuan;Yuan, Hanna S.
通讯作者:
Yuan, Hanna S.
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14.9
作者:
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