Isolation and characterization of chromosome-gain and increase-in-ploidy mutants in yeast.

Isolation and characterization of chromosome-gain and increase-in-ploidy mutants in yeast.
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酵母中染色体获得和倍性增加突变体的分离和表征。

DOI:
10.1093/genetics/135.3.677
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发表时间:
1993
期刊:
影响因子:
3.3
通讯作者:
Botstein,D
Botstein,D
中科院分区:
生物学2区
文献类型:
--
作者:
Chan,CS;Botstein,D

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我们已经开发了一种菌落乳头状突起检测法,用于监测酿酒酵母中遗传标记的染色体II和III的拷贝数。该检测试剂盒的独特之处在于,即使整组染色体增加(倍性增加),也可检测标记染色体的增加。该测定用于筛选染色体获得或倍性增加的突变体。五个互补组已被定义为隐性突变,赋予增加倍性(ipl)的表型,在每种情况下,与温度敏感的生长表型共分离。4个新的等位基因的CDC31,这是所需的纺锤体极体重复,也回收从这个屏幕。ipl1细胞的温移实验表明,它们在37度时会出现严重的不分离现象。对ipl2细胞进行的类似实验表明,它们获得了整组染色体,并在37度时被阻止为未出芽的细胞。分子克隆和遗传作图表明,IPL 1是一个新发现的基因,而IPL 2是等位基因的BEM2,这是正常的芽生长所必需的。
We have developed a colony papillation assay for monitoring the copy number of genetically marked chromosomes II and III in Saccharomyces cerevisiae. The unique feature of this assay is that it allows detection of a gain of the marked chromosomes even if there is a gain of the entire set of chromosomes (increase-in-ploidy). This assay was used to screen for chromosome-gain or increase-in-ploidy mutants. Five complementation groups have been defined for recessive mutations that confer an increase-in-ploidy (ipl) phenotype, which, in each case, cosegregates with a temperature-sensitive growth phenotype. Four new alleles of CDC31, which is required for spindle pole body duplication, were also recovered from this screen. Temperature-shift experiments with ipl1 cells show that they suffer severe nondisjunction at 37 degrees. Similar experiments with ipl2 cells show that they gain entire sets of chromosomes and become arrested as unbudded cells at 37 degrees. Molecular cloning and genetic mapping show that IPL1 is a newly identified gene, whereas IPL2 is allelic to BEM2, which is required for normal bud growth.
通过整合 DNA 转化对酵母肌动蛋白基因进行致命破坏。
DOI: 10.1126/science.7046050
发表时间: 1982
期刊: Science (New York, N.Y.)
影响因子: --
作者:
Shortle,D;Haber,JE;Botstein,D
通讯作者: Botstein,D
酿酒酵母细胞周期突变的内有丝分裂效应。
DOI: --
发表时间: 1981
期刊: Genetics
影响因子: 3.3
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DOI: 10.1093/genetics/107.2.179
发表时间: 1984
期刊: Genetics
影响因子: 3.3
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DOI: 10.1126/science.3116672
发表时间: 1987-10-23
期刊: SCIENCE
影响因子: 56.9
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LEMMON, SK;JONES, EW
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DOI: 10.1083/jcb.114.3.515
发表时间: 1991-08
影响因子: 7.8
作者:
Snyder, M;Gehrung, S;Page, B D
通讯作者: Page, B D