How to remove unwanted characters from a DNA sequence

Andrew Leung info at
Sat Jul 3 22:23:35 EST 2004

Dear all,

I was surprised that there were plenty of links about bioinformatics tools
on the Internet, but none can help remove unwanted (or non-ATGC) characters
from a DNA sequence - what a simple, yet frequently encountered task.

I then designed a very simple online tool for such purpose. You may find it
at If you have a chance to use it, please drop me
suggestions and comments.

Best regards,
Andrew Leung

More information about the Methods mailing list