Learn about Ligase Fidelity and Push the Limits of Golden Gate Assembly (35+ fragments).
Inquire about BSA-free formulations
We are excited to announce that we are in the process of switching all reaction buffers to be BSA-free. Beginning April 2021, we will be gradually transitioning to buffers containing Recombinant Albumin (rAlbumin) for restriction enzymes and some DNA modifying enzymes. All information on the website has been updated to reflect this change. Find more details at www.neb.com/BSA-free.
Attention Golden Gate Assembly users: BsaI-HFv2 (NEB #R3733) has been optimized for Golden Gate Assembly*. BsaI-HFv2 also works well for any protocol requiring DNA cutting by BsaI. This is the recommended enzyme for any purpose requiring digestion at the recognition sequence ...5′-GGTCTC(N1)/(N5)-3′...
*The requirements for digestion of DNA during Golden Gate Assembly are more demanding than what is encountered in traditional DNA cloning. For Golden Gate, the enzyme must function well in a buffer that might not be the same buffer as that normally provided for the restriction enzyme, and maintain activity for an extended time at elevated temperatures in a dynamic cutting/re-ligating reaction with competition for substrate binding between the endonuclease and ligase. Extensive testing has demonstrated superior performance of BsaI-HFv2 compared to both BsaI (NEB #R0535) and BsaI-HF (NEB #R3535) in this challenging Golden Gate assembly context where restriction enzyme efficiency and fidelity are critically important.
"I really, really love BsaI-HFv2. We are back to getting phenomenal GGA results again with very little background."
The following reagents are supplied with this product:
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