Statistical analysis of GC-biased gene conversion and recombination hotspots in eukaryotic genomes: a phylogenetic hidden Markov model-based approach
Statistical analysis of GC-biased gene conversion and recombination hotspots in eukaryotic genomes: a phylogenetic hidden Markov model-based approach
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真核基因组中GC偏向基因转换和重组热点的统计分析:基于系统发育隐马尔可夫模型的方法
DOI:
10.1145/3459930.3469509
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Liu, Kevin J.
中科院分区:
文献类型:
--
作者:
Gao, Meijun;Liu, Kevin J.
Genetic recombination in eukaryotes can occur with or without crossover, where the latter event is referred to as gene conversion. New discoveries in the genomic and post-genomic era have shed new light into the complex interplay between recombination and other evolutionary processes such as point mutations. In particular, G/C content of genomic regions can increase over evolutionary time due to recombination in the form of gene conversion - a phenomenon known as GC-biased gene conversion (gBGC) - and gBGC is increasingly appreciated as serving an important role in genome evolution throughout the eukaryotic Tree of life. These findings have largely relied on computational advances for analyzing recombinant sequences for indirect signatures of gBGC. However, deeper insights into the functional and evolutionary significance of gBGC require a unified framework that accounts for variable-across-sites recombination and point mutation processes.In this study, we introduce PHYNCH (or "PHYlogeNetiC-HMM for analyzing gBGC and recombination hotspots"). PHYNCH utilizes a statistical model that combines a hidden Markov model to capture local genealogical variation due to recombination and gene conversion with a finite-sites model of sequence evolution along a local genealogy. Inference and learning under the new model is used to detect and analyze local patterns of gBGC and recombination hotspots within genomic sequences. We validate the performance of PHYNCH using simulated benchmarking data. Furthermore, we use PHYNCH to create a new genomic map of gBGC and recombination in rice.
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影响因子:
10.7
作者:
Escobar, Juan S.;Glemin, Sylvain;Galtier, Nicolas
通讯作者:
Galtier, Nicolas
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
J. Cooke
通讯作者:
J. Cooke
影响因子:
10.7
作者:
Lesecque Y;Mouchiroud D;Duret L
通讯作者:
Duret L
DOI:
10.1145/3307339.3343352
发表时间:
2019
期刊:
Computational Biology and Health Informatics
影响因子:
--
作者:
Wuyun, Qiqige;VanKuren, Nicholas W.;Kronforst, Marcus;Mullen, Sean P.;Liu, Kevin J.
通讯作者:
Liu, Kevin J.