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Nae I
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Nae I Technical BrochureTechnical Brochure
NaeI is a restriction enzyme purified from Streptomyces species.

 

Unit substrate: pBR322 DNA.

 

Unit calculation assay conditions: 10 mM Tris-HCl (pH 7.9 @ 25°C), 10 mM MgCl2, 1 mM dithiothreitol, 100 μg/ml BSA. Incubate at 37°C.

 

Absence of contaminants: 50 units of Nae I do not produce any unspecific cleavage products after 16 hrs incubation with 1 μg of pBR322 at 37oC. After 10-fold overdigestion with Nae I, greater than 80% of the DNA fragments can be ligated and recut with this enzyme.

 

Storage buffer: 50 mM KCl, 10 mM Tris-HCl (pH 7.4), 0.1 mM EDTA, 1 mM dithiothreitol, 200 μg/ml BSA and 50% glycerol. Store at -20oC.

 

Heat inactivation: 65oC for 20 minutes.

 

Methylation Sensitivity:

dam methylation: Not sensitive

dcm methylation: Not sensitive

CpG methylation: Blocked



Note: Nae I exhibits site preferences. pBR322 contains four Nae I recognition sequences. Two of these sites are readily cleaved, one is cleaved moderately slowly, and the fourth is cleaved 50-fold more slowly.

 

Percent Activity in MINOTECH Buffers
 L M  H  SH  A  K 
 100 25-50  25  <10   50 100 
 
 
General reaction mixture:
10U NaeI 1μl
10x L or K buffer*  2μl 
DNA substrate  <1μg
Sterile ultrapure water  Up to 20 μl
Incubate for 15 min at 37oC  
*In the case of L buffer we recommend the addition of BSA to a final concentration of 100 μg/ml. 

 

Reagents supplied: 10x L and 10x K buffer