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Old 07-03-2013, 11:59 AM   #1
ysnapus
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Location: Mid-Atlantic

Join Date: Jun 2013
Posts: 22
Default Good poly-A filtering rules or tools

I am aligning a large number of ESTs. It seems poly-A tails show in many different ways. In addition to occurring at the very end, they can be flanked by the cloning sequence one one end, or have mismatches/errors. What is a good rule or available tools that will handle the usual cases?

A few examples of the non-trivial cases I found, with their Genbank Accs:

Code:
>EE409337
... AAAAAAAAAAAAAAAAAAAAAAAAAGGAAAAAAAAAAAAAAAAAAAAAAAAAAAACCTTGTC
>EE409340
... TTTCTACAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACTTGTC
>EE409361
... TTGTTAAACTGAAAAAAAAAAAAAAAAAAAAAAAAAAAACCATGTCGGC
TTACTGAATTGAA
>EE420306
.... AAAAAAAGTTATGTTAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGGGAAAAAAA
AAAAAAAAAAAAAAAAA
Crossposted: StackExchange, Biostars.

Last edited by ysnapus; 07-05-2013 at 04:03 PM. Reason: cross posting
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