Isodicentric Y chromosomes and sex disorders as byproducts of homologous recombination that maintains palindromes.
Isodicentric Y chromosomes and sex disorders as byproducts of homologous recombination that maintains palindromes.
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DOI:
10.1016/j.cell.2009.07.042
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发表时间:
2009-09-04
期刊:
影响因子:
64.5
通讯作者:
Page DC
中科院分区:
文献类型:
--
作者:
Lange J;Skaletsky H;van Daalen SK;Embry SL;Korver CM;Brown LG;Oates RD;Silber S;Repping S;Page DC
Massive palindromes in the human Y chromosome harbor mirror-image gene pairs essential for spermatogenesis. During evolution, these gene pairs have been maintained by intrapalindrome, arm-to-arm recombination. The mechanism of intrapalindrome recombination and risk of harmful effects are unknown. We report 51 patients with isodicentric Y (idicY) chromosomes formed by homologous crossing-over between opposing arms of palindromes on sister chromatids. These ectopic recombination events occur at nearly all Y-linked palindromes. Based on our findings, we propose that intrapalindrome sequence identity is maintained via noncrossover pathways of homologous recombination. DNA double-strand breaks that initiate these pathways can be alternatively resolved by crossing over between sister chromatids to form idicY chromosomes, with clinical consequences ranging from spermatogenic failure to sex reversal and Turner syndrome. Our observations imply that crossover as well as noncrossover pathways are active in nearly all Y-linked palindromes, exposing an Achilles' heel in the mechanism that preserves palindrome-borne genes.
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影响因子:
1.9
作者:
Jacobs, P;Dalton, P;Skuse, D
通讯作者:
Skuse, D
DOI:
10.1159/000130497
发表时间:
1975-01-01
期刊:
CYTOGENETICS AND CELL GENETICS
影响因子:
--
作者:
HSU, TC;PATHAK, S;CHEN, TR
通讯作者:
CHEN, TR
DOI:
10.1098/rstb.2000.0717
发表时间:
2000-11-29
影响因子:
6.3
作者:
Charlesworth, B;Charlesworth, D
通讯作者:
Charlesworth, D
影响因子:
105.7
作者:
HULL, MGR;GLAZENER, CMA;DESAI, KM
通讯作者:
DESAI, KM
影响因子:
4
作者:
DANIEL, A;LAMPOTANG, PRLC
通讯作者:
LAMPOTANG, PRLC