The importance of genetic recombination for fidelity of chromosome pairing in meiosis.
The importance of genetic recombination for fidelity of chromosome pairing in meiosis.
复制标题
遗传重组对于减数分裂中染色体配对保真度的重要性。
DOI:
10.1016/s1534-5807(03)00357-5
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发表时间:
2003
影响因子:
11.8
通讯作者:
G. S. Roeder
中科院分区:
文献类型:
--
作者:
Hideo Tsubouchi;G. S. Roeder;G. S. Roeder
In budding yeast, absence of the Hop2 protein leads to extensive synaptonemal complex (SC) formation between nonhomologous chromosomes, suggesting a crucial role for Hop2 in the proper alignment of homologous chromosomes during meiotic prophase. Genetic analysis indicates that Hop2 acts in the same pathway as the Rad51 and Dmc1 proteins, two homologs ofE. coliRecA. Thus, thehop2mutant phenotype demonstrates the importance of the recombination machinery in promoting accurate chromosome pairing. We propose that the Dmc1/Rad51 recombinases require Hop2 to distinguish homologous from nonhomologous sequences during the homology search process. Thus, when Hop2 is absent, interactions between nonhomologous sequences become inappropriately stabilized and can initiate SC formation. Overexpression ofRAD51largely suppresses the meiotic defects of thedmc1andhop2mutants. We conclude that Rad51 is capable of carrying out a homology search independently, whereas Dmc1 requires additional factors such as Hop2.
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影响因子:
3.3
作者:
Dresser,ME;Ewing,DJ;Conrad,MN;Dominguez,AM;Barstead,R;Jiang,H;Kodadek,T
通讯作者:
Kodadek,T
影响因子:
3.3
作者:
M. Lichten;R. Borts;James E. Haber
通讯作者:
M. Lichten;R. Borts;James E. Haber
影响因子:
3.3
作者:
Nag,DK;Scherthan,H;Rockmill,B;Bhargava,J;Roeder,GS
通讯作者:
Roeder,GS
影响因子:
56.9
作者:
OGAWA, T;YU, X;EGELMAN, EH
通讯作者:
EGELMAN, EH
DOI:
10.1073/pnas.82.10.3350
发表时间:
1985-01-01
影响因子:
11.1
作者:
JINKSROBERTSON, S;PETES, TD
通讯作者:
PETES, TD