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Cat. No.: NBBD-2k (for 2KU)

Recognition Site

GCTCTTCN
5'...G C T C T T C N↓...3'
3'...C G A G A A G N ...5'

Description

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Nt.BspQI is a type of nicking endonuclease that cleaves only one strand of the dsDNA substrate; it generates a nick on the dsDNA substrate without cleaving the dsDNA.

Activity Definition

One unit of activity (U) is defined as the amount of enzyme required to completely convert 1 µg of supercoiled pUC19 DNA into its open circular form in a 50 μl reaction system at 65°C for 1 hour.

Quality Control

• Extended Incubation Test: Incubate 10 U of Nb.BsrDI with supercoiled pUC19 DNA substrate at 65°C for 16 hours. Agarose gel electrophoresis shows no change in the open circular DNA.
• RNase Residual Detection: Incubate 10 U of Nb.BsrDI with 500 ng of RNA at 37°C for 1 hour. Agarose gel electrophoresis shows that more than 90% of the RNA remains intact.