Medical Definition of CpG island
1.
Region of genomic DNA rich in the dinucleotide C G. Methylation of the C in the dinucleotide is maintained through cell divisions and profoundly affects the degree of transcription of the nearby genes and is important in developmental regulation of gene expression.
This entry appears with permission from the Dictionary of Cell and Molecular Biology
(11 Mar 2008)
Lexicographical Neighbors of CpG Island
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