NEB will be closed Thursday, November 23, 2017 and Friday, November 24, 2017. Orders placed will process Monday, November 27, 2017 for delivery on Tuesday, November 28,2017.

FAQ: Can Topoisomerase I relax both positively and negatively supercoiled DNA?

No. E. Coli Topoisomerase I can only relax negatively supercoiled DNA.
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