Readseq -- biosequence conversion tool
Sequence data
Upload sequence file: or paste data or URL in box below

See here for help.

Output sequence format:

Return biosequence data:
Download to file
View in browser

Change sequence case to
No change

Remove gap symbols:
Calculate checksum of sequences

Select all, or sequences by number:

Translate bases (list as from-base:to-base pairs)

Feature selection
Features to select/remove:

No selection

Extract sequence of selected features

Remove sequence of selected features

of sequence feature locations to extract. E.g.,
-1000..0 is 1000 bases upstream to start of feature;
end..end+100 is from end to 100 bases downstream.

These selections apply only when
input data includes parsed feature tables.

Readseq by D.G. Gilbert, 2.1.27 (19-Apr-2008)
Software at