Toolyard

ClaI Recognition Site


ClaI at a glance

5' AT|CGAT 3'
3' TAGC|TA 5'
Recognition site5'-ATCGAT-3'
CutAT^CGAT
Endsa 2-base 5' overhang (CG)
Expected frequencyabout once every 4,096 bp in random DNA
Compatible endsBstBI, MspI, TaqI

How to find ClaI sites in a sequence

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

Frequently asked questions

What sequence does ClaI cut?

ClaI recognizes ATCGAT (written 5' to 3') and cuts the top strand at AT^CGAT.

Does ClaI leave sticky or blunt ends?

Sticky ends: a 2-base 5' overhang (CG).

Which enzymes leave ends compatible with ClaI?

BstBI, MspI and TaqI. Their overhangs are the same, so the ends can be ligated to each other.

How often does ClaI cut?

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

Restriction enzymes

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