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Grow up a 200 mL culture of E coli harboring pET29
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Maxiprep the resultant culture to obtain 2 x 500 uL aliquots of purifed plsmid at ~ 200 ng/uL
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Perform the following digest
75 ng / uL * 75 uL => 5,625 ng 200 ng / uL * 500 uL => 100,000 ng
Reaction conditions: recommended
5-10 units each enzyme + 1 ug DNA in 50 uL
(enzyme volume not to exceed 10% of total reaction volume)
NdeI and XhoI for 1 hour at 37
So for 50 ug of pET29
250-500 units enzyme + 50 ug DNA in 2500 uL
AKA
12.5-25 uL NdeI + 12.5-25 uL XhoI + 250 uL CutSmart + 500 uL DNA + 1700-1725 uL water