Format Conversion
Sequence Analysis
Sequence Figures
Random Sequences
Miscellaneous
The Sequence Manipulation Suite Copyright © 2000, 2004 Paul Stothard. Send questions and comments to stothard@ualberta.ca
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| Sequence Manipulation Suite: |
| CpG Islands |
CpG Islands reports potential CpG island regions using the method described by Gardiner-Garden and Frommer (1987). The calculation is performed using a 200 bp window moving across the sequence at 1 bp intervals. CpG islands are defined as sequence ranges where the Obs/Exp value is greater than 0.6 and the GC content is greater than 50%. The expected number of CpG dimers in a window is calculated as the number of 'C's in the window multiplied by the number of 'G's in the window, divided by the window length. CpG islands are often found in the 5' regions of vertebrate genes, therefore this program can be used to highlight potential genes in genomic sequences.
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