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Type: Journal article
Title: Genomic structure and paralogous regions of the inversion breakpoint occurring between human chromosome 3p12.3 and orangutan chromosome 2
Author: Yue, Y.
Grossmann, B.
Tsend-Ayush, E.
Grutzner, F.
Ferguson-Smith, M.
Yang, F.
Haaf, T.
Citation: Cytogenetic and Genome Research, 2005; 108(1-3):98-105
Publisher: Karger
Issue Date: 2005
ISSN: 1424-8581
Statement of
Y. Yue, B. Grossmann, E. Tsend-Ayush, F. Grützner, M.A. Ferguson-Smith, F. Yang and T. Haaf
Abstract: Intrachromosomal duplications play a significant role in human genome pathology and evolution. To better understand the molecular basis of evolutionary chromosome rearrangements, we performed molecular cytogenetic and sequence analyses of the breakpoint region that distinguishes human chromosome 3p12.3 and orangutan chromosome 2. FISH with region-specific BAC clones demonstrated that the breakpoint-flanking sequences are duplicated intrachromosomally on orangutan 2 and human 3q21 as well as at many pericentromeric and subtelomeric sites throughout the genomes. Breakage and rearrangement of the human 3p12.3-homologous region in the orangutan lineage were associated with a partial loss of duplicated sequences in the breakpoint region. Consistent with our FISH mapping results, computational analysis of the human chromosome 3 genomic sequence revealed three 3p12.3-paralogous sequence blocks on human chromosome 3q21 and smaller blocks on the short arm end 3p26-->p25. This is consistent with the view that sequences from an ancestral site at 3q21 were duplicated at 3p12.3 in a common ancestor of orangutan and humans. Our results show that evolutionary chromosome rearrangements are associated with microduplications and microdeletions, contributing to the DNA differences between closely related species.
Keywords: Lymphocytes
Cell Line, Transformed
Hybrid Cells
Chromosomes, Mammalian
Chromosomes, Human, Pair 3
Pan troglodytes
Pongo pygmaeus
Herpesvirus 4, Human
Chromosome Breakage
In Situ Hybridization, Fluorescence
Contig Mapping
Evolution, Molecular
Sequence Deletion
Chromosome Inversion
Description: Copyright © 2005 S. Karger AG, Basel
DOI: 10.1159/000080807
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Appears in Collections:Aurora harvest 6
Environment Institute Leaders publications
Molecular and Biomedical Science publications

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