CpG islands or CpG clusters: how to identify functional GC-rich regions in a genome?
Language: 
English
Short Title: 
CpG islands or CpG clusters
Abstract: 

BACKGROUND: CpG islands (CGIs), clusters of CpG dinucleotides in GC-rich regions, are often located in the 5' end of genes and considered gene markers. Hackenberg et al. (2006) recently developed a new algorithm, CpGcluster, which uses a completely different mathematical approach from previous traditional algorithms. Their evaluation suggests that CpGcluster provides a much more efficient approach to detecting functional clusters or islands of CpGs. RESULTS: We systematically compared CpGcluster with the traditional algorithm by Takai and Jones (2002). Our comparisons of (1) the number of islands versus the number of genes in a genome, (2) the distribution of islands in different genomic regions, (3) island length, (4) the distance between two neighboring islands, and (5) methylation status suggest that Takai and Jones' algorithm is overall more appropriate for identifying promoter-associated islands of CpGs in vertebrate genomes. CONCLUSION: The generation of genome sequence and DNA methylation data is expected to accelerate greatly. The information in this study is important for its extensive utility in gene feature analysis and epigenomics including gene prediction and methylation chip design in different genomes.

Author(s): 
Han, Leng
Zhao, Zhongming
Item Type: 
Journal Article
Publication Title: 
BMC bioinformatics
Journal Abbreviation: 
BMC Bioinformatics
Publication Date: 
2/20/2009
Publication Year: 
2009
Pages: 
65
Volume: 
10
ISSN: 
1471-2105
DOI: 
10.1186/1471-2105-10-65
Library Catalog: 
PubMed
Extra: 
PMID: 19232104 PMCID: PMC2652441

Turabian/Chicago Citation

Leng Han and Zhongming Zhao. 2/20/2009. "CpG islands or CpG clusters: how to identify functional GC-rich regions in a genome?." BMC bioinformatics 10: 65. 10.1186/1471-2105-10-65.

Wikipedia Citation

<ref> {{Cite journal | doi = 10.1186/1471-2105-10-65 | issn = 1471-2105 | volume = 10 | pages = 65 | last = Han | first = Leng | coauthors = Zhao, Zhongming | title = CpG islands or CpG clusters: how to identify functional GC-rich regions in a genome? | journal = BMC bioinformatics | date = 2/20/2009 | pmid = | pmc = }} </ref>