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SspI Recognition Site


SspI at a glance

5' AAT|ATT 3'
3' TTA|TAA 5'
Recognition site5'-AATATT-3'
CutAAT^ATT
Endsblunt ends
Expected frequencyabout once every 4,096 bp in random DNA

How to find SspI sites in a sequence

  1. Paste a DNA sequence or FASTA record into the box above. SspI is already entered under Only these enzymes.
  2. Tick Circular DNA for a plasmid, so a site that spans the end and the start is found.
  3. The map marks each SspI cut with its position. Copy or download the output below it.

Frequently asked questions

What sequence does SspI cut?

SspI recognizes AATATT (written 5' to 3') and cuts the top strand at AAT^ATT.

Does SspI leave sticky or blunt ends?

Blunt ends, with no overhang.

How often does SspI cut?

A site like AATATT turns up about once every 4,096 bp in random DNA. Real sequences vary, so check yours above.

Restriction enzymes

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