isolating large amounts of yeast genomic

[Ricky]

Hey, folks,

I am interested in procuring large quantities of yeast genomic DNA, for 
use as part of a blocking solution. I thought that commercially 
available yeast DNA would be fine, except that there really isn't any 
company that markets bulk grade yeast DNA on the same scale as salmon or 
herring sperm. 

So, I guess the answer is to make it ourselves, yeast isn't that 
difficult to grow. Question is, does anyone have an inexpensive protocol 
for purifying yeast genomic DNA, by the bucketful? Zymolyase on this 
scale can be cost prohibitive (I am talking at least 10 liters of yeast 
culture here), and the DNA really doesn't have to be that clean (if I 
can digest it with a cheap restriction enzyme, that is good enough). 

I would appreciate either a pointer to a commercial, inexpensive source 
of this DNA, or to a protocol that scales up well. Thanks so much.

-r

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