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XbaI Recognition Site


XbaI at a glance

5' T|CTAGA 3'
3' AGATC|T 5'
Recognition site5'-TCTAGA-3'
CutT^CTAGA
Endsa 4-base 5' overhang (CTAG)
Expected frequencyabout once every 4,096 bp in random DNA
Compatible endsAvrII, NheI, SpeI

How to find XbaI sites in a sequence

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

Frequently asked questions

What sequence does XbaI cut?

XbaI recognizes TCTAGA (written 5' to 3') and cuts the top strand at T^CTAGA.

Does XbaI leave sticky or blunt ends?

Sticky ends: a 4-base 5' overhang (CTAG).

Which enzymes leave ends compatible with XbaI?

AvrII, NheI and SpeI. Their overhangs are the same, so the ends can be ligated to each other.

How often does XbaI cut?

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

Restriction enzymes

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