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有向基因组反转和转位排序最小权重问题的1.5k近似算法
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作者 刘光聪 朱大铭 姜海涛 《小型微型计算机系统》 CSCD 北大核心 2010年第7期1452-1456,共5页
随着快速测序技术的发展,基因组重组排序问题已经成为计算生物学的一个重要研究领域.基因组重组操作包括反转、转位和移位操作.其研究目标是寻找最短的重组操作序列,将一种基因组转变为另一种基因组.考虑重组操作所花费的费用,讨论了有... 随着快速测序技术的发展,基因组重组排序问题已经成为计算生物学的一个重要研究领域.基因组重组操作包括反转、转位和移位操作.其研究目标是寻找最短的重组操作序列,将一种基因组转变为另一种基因组.考虑重组操作所花费的费用,讨论了有向基因组反转和转位排序的最小权重问题,证明该问题的一个下界,并给出一个近似度为1.5k的近似算法,其中k是一个常数,且k≥1. 展开更多
关键词 基因重组排序 反转 转位 近似算法
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Genetic Diversity of Intragenomic Rearrangement of Porcine Circovirus Type 2 in vitro and in vivo 被引量:1
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作者 Libin WEN Fengzhi WANG +5 位作者 Bin LI Yang YU Zhengyu YU Aihua MAO Jianping XIE Kong-wang HE 《Agricultural Science & Technology》 CAS 2013年第12期1719-1722,共4页
We characterized the genome sequences of defective-interfering(DI) particle DNA of porcine circovirus type 2(PCV2) by sequencing and bioinformatics analyses. DI particles were both generated by serial passage of PCV2 ... We characterized the genome sequences of defective-interfering(DI) particle DNA of porcine circovirus type 2(PCV2) by sequencing and bioinformatics analyses. DI particles were both generated by serial passage of PCV2 in PK15 cells and obtained from sera of pigs with postweaning multisystemic wasting syndrome(PMWS). These subviral isolates ranged from 358 nt to 1 125 nt genomes. Investigating the complexity and diversity of PCV2 DI in vivo and in vitro can help elucidating the evolutionary history of PCV2. 展开更多
关键词 Porcine circovirus type 2 Rearrangement In vivo In vitro
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Progress in the Researches on Insect Mitochondrial Genome and Analysis of Gene Order
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作者 Hu Li Jianyu Gao Haiyu Liu Wanzhi Cai 《Science Foundation in China》 CAS 2009年第2期39-45,共7页
Insect mitochondrial genome is a double-stranded circular genomes which range from 14 503 bp to 19 571 bp in size.Nearly all the sequenced insect mitochondrial genomes encode 37 genes:two for rRNAs,13 for proteins and... Insect mitochondrial genome is a double-stranded circular genomes which range from 14 503 bp to 19 571 bp in size.Nearly all the sequenced insect mitochondrial genomes encode 37 genes:two for rRNAs,13 for proteins and 22 for tRNAs.This review compares and summarizes the features of complete mitochondrial genomes from 175 sequenced species of insects in 22 orders.The genomic organization, contents,gene order,and rearrangements of gene order are analyzed. 展开更多
关键词 INSECT mitochondrial genome geneorder PHYLOGENY
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