The boundary of macaque rDNA is constituted by low-copy sequences conserved during evolution.

Abstract:

:In Macaca mulatta, the single rDNA array is flanked by a patchwork of sequences including subregions of human Yp11.2, 4q35.2, and 10p15.3. This composite DNA region is characterized by unique or low-copy sequences, resembling a potentially transcribed region. The analysis of Cercopithecus aethiops, Presbytis cristata, and Hylobates lar suggests that this complex sequence organization could be shared by Old World monkey and lesser ape species. After the lesser apes/great apes divergence, the unique or nonduplicated DNA region underwent amplification and spreading, preferentially marking the p arm of acrocentric chromosomes bearing the rDNA. The molecular analysis of human acrocentric chromosomes revealed some extent of remodeling of the rDNA boundary: near the human NOR, a large 4q35.2 duplication partially resembles that found in MMU; conversely, infrequently represented Yp11.2 sequences totally differed from those of the macaque, and 10p15.3 sequences were lacking. Thus, although evolutionary events modified the sequence organization of the MMU rDNA boundary, its overall sequence feature and the preferential location in vicinity to the NOR have been conserved.

journal_name

Genomics

journal_title

Genomics

authors

Bodega B,Cardone MF,Rocchi M,Meneveri R,Marozzi A,Ginelli E

doi

10.1016/j.ygeno.2006.05.001

subject

Has Abstract

pub_date

2006-11-01 00:00:00

pages

564-71

issue

5

eissn

0888-7543

issn

1089-8646

pii

S0888-7543(06)00145-5

journal_volume

88

pub_type

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