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Processed pseudogenes are located preferentially in regions of low recombination rates in the human genome.

Abstract：

:The aim of this article is to demonstrate possible recombination-associated evolutionary forces affecting the genomic distribution of processed pseudogenes. The relationship between recombination rate and the distribution of processed pseudogenes is analysed in the human genome. The results show that processed pseudogenes preferentially accumulate in regions of low recombination rates and this correlation cannot be explained by indirect relationships with GC content and gene density. Several explanatory models for the observation are discussed. A model of selection against ectopic recombination is tested based on the difference in distribution pattern between two classes of processed pseudogenes, which differ in the possibility of stimulating ectopic recombination. Our results indicate that the correlation between processed pseudogene density and recombination rate is probably results, in part, from the selection against ectopic recombination between closely located homologous processed pseudogenes. We also found a length effect in processed pseudogene distribution, namely long processed pseudogenes are located more preferentially in regions of low recombination rates than short ones.

journal_name

J Evol Biol

journal_title

Journal of evolutionary biology

authors

Liu G,Li H,Cai L

doi

10.1111/j.1420-9101.2010.01974.x

subject

Has Abstract

pub_date

2010-05-01 00:00:00

pages

1107-15

issue

5

eissn

1010-061X

issn

1420-9101

pii

JEB1974

journal_volume

23

pub_type

杂志文章

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