A role for centromere pairing in meiotic chromosome segregation

被引:76
作者
Kemp, B [1 ]
Boumil, RM [1 ]
Stewart, MN [1 ]
Dawson, DS [1 ]
机构
[1] Tufts Univ, Dept Mol Biol & Microbiol, Boston, MA 02111 USA
关键词
meiosis; centromere pairing; nonexchange segregation;
D O I
10.1101/gad.1227304
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
In meiosis 1, exchanges provide a connection between homologous chromosome pairs that facilitates their proper attachment to the meiotic spindle. In many eukaryotes, homologous chromosomes that fail to become linked by exchanges exhibit elevated levels of meiotic errors, but they do not segregate randomly, demonstrating that mechanisms beyond exchange can promote proper meiosis I segregation. The experiments described here demonstrate the existence of a meiotic centromere pairing mechanism in budding yeast. This centromere pairing mediates the meiosis I bipolar spindle attachment of nonexchange chromosome pairs and likely plays the same role for all homologous chromosome pairs.
引用
收藏
页码:1946 / 1951
页数:6
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