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Meiotic recombination remote from prominent DNA break sites in S. pombe.

Abstract：

:DNA breakage is intimately associated with meiotic recombination in the fission yeast Schizosaccharomyces pombe. Sites of prominent DNA breakage were found approximately 25 to approximately 200 kb apart in the genomic regions surveyed. We examined in detail a 501 kb region of chromosome I and found six sites, or tight clusters of sites, at which approximately 2%-11% of the DNA accumulated breaks in a rad50S mutant. In contrast to the discrete, widely spaced distribution of prominent break sites, recombination in this region was more uniformly distributed (0.7-1.6 cM/10 kb) whether the genetic interval tested contained no, one, or more such sites. We infer that although recombination depends upon DNA breakage, recombination often occurs remote from these sites (tens of kilobases away); we discuss mechanisms by which this may occur.

journal_name

Mol Cell

journal_title

Molecular cell

authors

Young JA,Schreckhise RW,Steiner WW,Smith GR

doi

10.1016/s1097-2765(02)00452-5

subject

Has Abstract

pub_date

2002-02-01 00:00:00

pages

253-63

issue

2

eissn

1097-2765

issn

1097-4164

pii

S1097-2765(02)00452-5

journal_volume

9

pub_type

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