Integrative selection of human chromosome-specific yeast artificial chromosomes.
收藏PubMed Central1991-09-01 更新2026-05-16 收录
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https://pmc.ncbi.nlm.nih.gov/articles/PMC52388/
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资源简介：
Human specific "integrative selection vectors" (ISVs) were designed to optimize integration of a yeast-selectable marker specifically into yeast artificial chromosomes (YACs) derived from human but not mouse DNA. ISVs were transformed into a YAC genomic library constructed from DNA of a human-mouse somatic cell hybrid containing chromosome 21 (HSA21) as the only human chromosome. One percent of the yeast in the original library contained HSA21-derived YACs; between 45% and 54% of the yeast recovered after transformation with ISV vectors contained human YACs. Integrative selection provides a rapid means of obtaining a highly enriched population of human chromosome-specific YACs by eliminating the labor-intensive steps of isolating and screening primary transformants. The procedure is biased toward the selection of YACs that contain a large number of targets for homologous recombinations; thus, libraries constructed by this procedure will be composed primarily of the largest YACs in the population. IMAGES:
提供机构：
National Academy of Sciences
创建时间：
1991-09-01
