CpG Island Searcher
Current Version:10/29/04
The CpG island searcher screens for CpG islands which meet the criteria selected below in submitted DNA sequences.
The criteria and algorithm are described by D.T and P.A.J.
[PNAS 99(6):3740-5 (2002)]
The CpG island searcher web page was designed originally by D.Takai. and rewritten by
S.Catherall.
A command-line version of the CpG Island Searcher is also available.
Download
A report that describes this web site has been published in
In Silico Biol. 3, 0021 (2003).
The user can now define the gap to merge two potentially separate CpG islands. (Please refer
the paper
above for details)
Note. PC users must use Microsoft Internet Explorer 6.0 or above.
Note. MAC users must use Microsoft Internet Explorer and click refresh
after submitting the sequence in order to see the correct version.
Current update uses the selected length parameter as a sliding window when initially scanning for CpG islands in the submitted sequence.
This update has no size limitations for the sequence.
If the image displays in your browser as small, then IE resizing is enabled. You will need to disable the "Enable Automatic Image Resizing" in the internet options of Internet Explorer.
After submitting, the results will appear as a jpeg file on a new page.
Select the lower limit values
%GC
50%
51%
52%
53%
54%
55%
56%
57%
58%
59%
60%
ObsCpG/ExpCpG
0.60
0.61
0.62
0.63
0.64
0.65
0.66
0.67
0.68
0.69
0.70
Length
200bp
300bp
400bp
500bp
600bp
700bp
800bp
900bp
1000bp
1100bp
1200bp
Gap between adjacent islands
100bp
150bp
200bp
250bp
300bp
Sequence