Structural basis of 5' flap recognition and protein-protein interactions of human flap endonuclease 1.
Structural basis of 5' flap recognition and protein-protein interactions of human flap endonuclease 1.
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DOI:
10.1093/nar/gky911
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发表时间:
2018-11-30
影响因子:
14.9
通讯作者:
Zhao Y
中科院分区:
文献类型:
--
作者:
Xu H;Shi R;Han W;Cheng J;Xu X;Cheng K;Wang L;Tian B;Zheng L;Shen B;Hua Y;Zhao Y
Human flap endonuclease 1 (hFEN1) is a structure-specific nuclease essential for DNA replication and repair processes. hFEN1 has 5′ flap removal activity, as well as gap endonuclease activity that is critical for restarting stalled replication forks. Here, we report the crystal structures of wild-type and mutant hFEN1 proteins in complex with DNA substrates, followed by mutagenesis studies that provide mechanistic insight into the protein–protein interactions of hFEN1. We found that in an α-helix forming the helical gateway of hFEN1 recognizes the 5′ flap prior to its threading into the active site for cleavage. We also found that the β-pin region is rigidified into a short helix in R192F hFEN1–DNA structures, suppressing its gap endonuclease activity and cycle-dependent kinase interactions. Our findings suggest that a single mutation at the primary methylation site can alter the function of hFEN1 and provide insight into the role of the β-pin region in hFEN1 protein interactions that are essential for DNA replication and repair.
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影响因子:
7.7
作者:
Cheng K;Xu H;Chen X;Wang L;Tian B;Zhao Y;Hua Y
通讯作者:
Hua Y
影响因子:
14.8
作者:
Exell JC;Thompson MJ;Finger LD;Shaw SJ;Debreczeni J;Ward TA;McWhirter C;Siöberg CL;Martinez Molina D;Abbott WM;Jones CD;Nissink JW;Durant ST;Grasby JA
通讯作者:
Grasby JA
影响因子:
16
作者:
Guo, Zhigang;Kanjanapangka, Julie;Liu, Na;Liu, Songbai;Liu, Changwei;Wu, Zhenxing;Wang, Yingjie;Loh, Tiffany;Kowolik, Claudia;Jamsen, Joonas;Zhou, Mian;Khue Truong;Chen, Yuan;Zheng, Li;Shen, Binghui
通讯作者:
Shen, Binghui
影响因子:
14.8
作者:
Guo, Zhigang;Zheng, Li;Xu, Hong;Dai, Huifang;Zhou, Mian;Pascua, Mary Rose;Chen, Qin M.;Shen, Binghui
通讯作者:
Shen, Binghui
DOI:
10.1074/jbc.m115.698993
发表时间:
2016-04-08
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Algasaier SI;Exell JC;Bennet IA;Thompson MJ;Gotham VJ;Shaw SJ;Craggs TD;Finger LD;Grasby JA
通讯作者:
Grasby JA