The DpnI restriction enzyme digests DNA at GmeA↓TC sites, requiring N6-methylation of the adenine residue for activity. DNA purified from a dam+ strain will be a substrate for DpnI due to the adenine methylation. DpnI cleaves hemi-methylated dam sites 60 X more slowly than fully methylated.
Description
Molecular cloning ; Site directed mutagenesis ; Restriction site mapping ; Genotyping ; Southern Blot ; SNP ; Restriction fragment length polymorphism (RFLP)
Notes
One unit is defined as the amount of Dpn1 required to digest 1 µg of dam methylated pBR322 DNA in 1 hour at 37°C in a total reaction volume of 50 µl.
This product is distributed for laboratory research only. Caution: Not for diagnostic use.
Concentration
20 U/μl
Form
Enzyme supplied with 10X Reaction Buffer
Quantity
2000 U (100 μl)
Storage
-20°C
Shipping Condition
Dry Ice
Storage Condition
-20C
Buffer
Storage Buffer: 10 mM Tris-HCl (pH 7.5), 300 mM NaCl, 1 mM DTT, 0.1 mM EDTA, 500 µg/ml BSA, and 50% (v/v) Glycerol.