Toolyard

HhaI Recognition Site


HhaI at a glance

5' GCG|C 3'
3' C|GCG 5'
Recognition site5'-GCGC-3'
CutGCG^C
Endsa 2-base 3' overhang (CG)
Expected frequencyabout once every 256 bp in random DNA

How to find HhaI sites in a sequence

  1. Paste a DNA sequence or FASTA record into the box above. HhaI 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 HhaI cut with its position. Copy or download the output below it.

Frequently asked questions

What sequence does HhaI cut?

HhaI recognizes GCGC (written 5' to 3') and cuts the top strand at GCG^C.

Does HhaI leave sticky or blunt ends?

Sticky ends: a 2-base 3' overhang (CG).

How often does HhaI cut?

A site like GCGC turns up about once every 256 bp in random DNA. Real sequences vary, so check yours above.

Restriction enzymes

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