Use Amplicon Express' Sequence Search Tool to look for the occurrence of a specific sequence such as poly-T tails, repeats, or other sequences of interest inside any number of FASTA-formatted sequence reads. Simply cut and paste the FASTA-formatted sequence you would like to search on in the area below, enter the sequence you would like to search for, and press the 'Search for Sub-sequence' button.

Results will be displayed in a printer-friendly format.

• Use the search string A,G,C,T to colorize your sequence and count the number of each base present
• Enter bases immediately to the 5' and 3' side of your insert cut site to find the insert sequence in your vector
• Find multiple sub-sequences in multiple fasta-formatted sequences, such as polyA tails, microsat repeats, etc.
• Search both sequence strands for your query.
• Flip your sequence from 5' -> 3' to 3' -> 5'

• FASTA headers must not contain spaces if you are going to BLAST the sequences
• You may want to trim vector before running this analysis
• Only 'agctAGCTxXnN' are allowed in sequence data (header lines are excluded from this rule)
• You can view the complement of your sequence and perform a search on that as well.

• Cut and paste the sample data to see what your results will look like