Abstract
Analysis of whole genome sequences has revealed that genes constitute only a small fraction of the DNA. The function of the remaining part of the genome is still enigmatic. The role of chromosome structure in gene regulation and maintenance of genome stability is increasingly appreciated, which has led to the hypothesis that large parts of the genome may be dedicated to controlling the formation of specific chromosome conformations. Here we review recent advances in our knowledge of chromosome structure and nuclear organization. We describe possible mechanisms by which genomes encode their spatial conformation, such as the use of specific DNA sequence elements to set up local chromatin structures and the potential exploitation of more global sequence characteristics to influence large-scale chromosome conformation. Complete insight into the processes that govern the spatial conformation of chromosomes will reveal new mechanisms of gene regulation and may also explain the large amount of non-coding DNA in genomes.
Keywords: chromosome condensation, nuclear organization, chromosome territory, long-range interaction, boundary element, insulator, transcription, base composition
Current Genomics
Title: Spatial Organization of Genomes
Volume: 5 Issue: 2
Author(s): N Gheldof and J Dekker
Affiliation:
Keywords: chromosome condensation, nuclear organization, chromosome territory, long-range interaction, boundary element, insulator, transcription, base composition
Abstract: Analysis of whole genome sequences has revealed that genes constitute only a small fraction of the DNA. The function of the remaining part of the genome is still enigmatic. The role of chromosome structure in gene regulation and maintenance of genome stability is increasingly appreciated, which has led to the hypothesis that large parts of the genome may be dedicated to controlling the formation of specific chromosome conformations. Here we review recent advances in our knowledge of chromosome structure and nuclear organization. We describe possible mechanisms by which genomes encode their spatial conformation, such as the use of specific DNA sequence elements to set up local chromatin structures and the potential exploitation of more global sequence characteristics to influence large-scale chromosome conformation. Complete insight into the processes that govern the spatial conformation of chromosomes will reveal new mechanisms of gene regulation and may also explain the large amount of non-coding DNA in genomes.
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Cite this article as:
Gheldof N and Dekker J, Spatial Organization of Genomes, Current Genomics 2004; 5 (2) . https://dx.doi.org/10.2174/1389202043489962
DOI https://dx.doi.org/10.2174/1389202043489962 |
Print ISSN 1389-2029 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5488 |
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