对甲动物染色质组织的比较分析
Joshua W K Ho1, Youngsook L Jung2, Tao Liu3
11] Center for Biomedical Informatics, Harvard Medical School, Boston, Massachusetts 02115, USA [2] Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts 02115, USA [3] [4] Victor Chang Cardiac Research Institute and The University of New South Wales, Sydney, New South Wales 2052, Australia (J.W.K.H.); Department of Biochemistry, University at Buffalo, Buffalo, New York 14203, USA (T.L.); Department of Molecular Biology and Lewis Sigler Institute for Integrative Genomics, Princeton University, Princeton, New Jersey 08540, USA (K.I., T.E.J.); Department of Human Genetics, University of Chicago, Chicago, Illinois 06037, USA (J.D.L.); Division of Genomic Technologies, Center for Life Science Technologies, RIKEN, Yokohama 230-0045, Japan (A.M.); Department of Genetics, Department of Computer Science, Stanford University, Stanford, California 94305, USA (A.K.); Department of Biology, The University of Alabama at Birmingham, Birmingham, Alabama 35294, USA (N.C.R.).
这项研究比较了人类,和虫的染色质组织,揭示了尽管基因组结构不同,但仍保留了调节机制. 它为了解基因组功能和进化提供了丰富的资源.
科学领域:
- 基因组学就是基因组学.
- 分子生物学分子生物学
- 比较生物学的比较生物学
背景情况:
- 染色体由DNA,基因组和蛋白质组成,可以动态调节基因组功能.
- 对虫和等模型生物的研究已经揭示了人类基因组机制,显示了保存的染色质成分.
- 在人类,和虫之间,基因组大小,染色体结构和基因组织存在显著差异.
研究的目的:
- 系统地研究和比较各种物种的染色质组织和基因调节.
- 分析大量来自虫,和人类细胞系和发育阶段的全基因组染色质数据.
- 识别染色体组织和功能的保存和分离特征.
主要方法:
- 来自ENCODE和modENCODE联盟的1400多个全基因组染色体数据集的生成和分析.
- 基质子修饰模式,核膜相关域和拓域的比较.
- 对促进剂和增强剂的染色质环境,核细胞定位和DNA复制模式的分析.
主要成果:
- 在人类,和虫的染色体组织中识别了许多保存的特征.
- 发现压制色素的组成和局部的显著差异.
- 在基因组修饰,核组织和DNA复制中展示保存模式.
结论:
- 染色体组织和基因调节在各种物种中表现出显著的保护,尽管存在结构上的差异.
- 该研究为比较基因组学和理解特定物种的染色质功能提供了全面的资源.
- 对比分析强调了共享的机制和在染色质调节中的独特适应.
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