One ring to rule them all! Topo Omni DNA Cloning Kit works equivalently well on both blunt and sticky end DNA fragments. Both AmpR and KanR available for choose. Does not include competent cell.


100% MONEY


Designed for equal efficient cloning of both blunt ended fragments
and fragments with 3’-A overhang, the Zero Background Omni Topoisomerase Cloning Kit utilizes DNA strand transfer activity of Viccinia virus topoisomerase I for the quick cloning of DNA fragments up to 10 kb. Vaccinia virus DNA topoisomerase I forms a 3’-phosphoryl intermediate with the plasmid vector containing cleavage recognition motif of 5’ CCCTT↓. Covalently bound topoisomerase I then transfer the incised vector DNA strand to the DNA fragment to be cloned with free 5’-OH terminuses (refer to the illustration below). This transferring reaction is rapid and reproducible. The cloning vector pCloneEZ-Omni-Amp/HC and pCloneEZ-Omni-Kan/HC included in this kit are high copy number plasmid engineered to tolerate mild toxic genes. For fast cloning of extremely toxic genes please chose our advanced CloneRanger Topoisomerase Kit.

Does not include competent cell.

Zero Background: >90% of randomly picked clones contain the right insert.


Fast: Instant transformation after mixing PCR fragment with vector, no incubation needeed.


CloneSmarter™ Zero Background Blunt Topoisomerase Cloning Kit Flow Chart:

Kit Size
Components C5865-25/C5866-25 (25 rxns) C5865-50/C5866-50 (50 rxns)
pCloneEZ-Omni-Amp/HC or
pCloneEZ-Omni-Kan/HC (20 ng/μl)
25 µl 50 µl
10X Enhancer 30 µl 60 µl
Control Insert lacZα (20ng/μl) 10 µl 10 µl
Blank Control Vector (100ng/μl) 20 µl 20 µl
M13F Sequencing Primer (10pmol) 100 µl 100 µl
M13R Sequencing Primer (10pmol) 100 µl 100 µl

Vector Sequence Files:

Snapgene File
Genbank File
pCloneEZ-Omni-Amp-HC pCloneEZ-Omni-Amp-HC
pCloneEZ-Omni-Kan-HC pCloneEZ-Omni-Kan-HC


Key Features:

CloneSmarter™ Zero Background Topo Omni Cloning Protocol:

Click the links below to learn about recent publications citing our products from Google Scholar:

Epoch Biolabs (our old name)

Epoch Life Science (our correct name)

Epoch Life Sciences (typo by some authors)