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盘基网柄菌6号染色体的高分辨率HAPPY图谱。

A high-resolution HAPPY map of Dictyostelium discoideum chromosome 6.

作者信息

Konfortov B A, Cohen H M, Bankier A T, Dear P H

机构信息

MRC Laboratory of Molecular Biology, Cambridge CB2 2QH, United Kingdom.

出版信息

Genome Res. 2000 Nov;10(11):1737-42. doi: 10.1101/gr.141700.

Abstract

We have made a high-resolution HAPPY map of chromosome 6 of Dictyostelium discoideum consisting of 300 sequence-tagged sites with an average spacing of 14 kb along the approximately 4-Mb chromosome. The majority of the marker sequences were derived from randomly chosen clones from four different chromosome 6-enriched plasmid libraries or from subclones of YACs previously mapped to chromosome 6. The map appears to span the entire chromosome, although marker density is greater in some regions than in others and is lowest within the telomeric region. Our map largely supports previous gene-based maps of this chromosome but reveals a number of errors in the physical map. In addition, we find that a high proportion of the plasmid sequences derived from gel-enriched chromosome 6 (and that form the basis of a chromosome-specific sequencing project) originates from other chromosomes.

摘要

我们构建了一个分辨率很高的盘基网柄菌6号染色体的HAPPY图谱,该图谱由300个序列标签位点组成,沿着约4兆碱基的染色体平均间距为14千碱基。大多数标记序列来自从四个不同的6号染色体富集质粒文库中随机选择的克隆,或来自先前定位到6号染色体的酵母人工染色体(YAC)的亚克隆。尽管某些区域的标记密度比其他区域大,且端粒区域内的标记密度最低,但该图谱似乎覆盖了整个染色体。我们的图谱在很大程度上支持了该染色体先前基于基因的图谱,但也揭示了物理图谱中的一些错误。此外,我们发现,从凝胶富集的6号染色体衍生而来(并构成一个染色体特异性测序项目基础)的质粒序列中,有很大一部分来自其他染色体。

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