DNA prep for P1 clones? Qiagen or PEG?

[Jim Bone]

In article <2ra7um$7rn at lyra.csx.cam.ac.uk>, cw117 at mole.bio.cam.ac.uk
(Charlie Wright (Genetics)) wrote:

> I'm about to do 250ml (mini in the case of P1) preps of some of the P1 
> clones found on flybase.  The only Protocol given says Grow O/N, 
> innoculate large flask, add IPTG to induce amplification, grow some more. 
> "proceed with the Qiagen maxi-prep according to the kit protocol".  The 
> problem is, there isn't a Qiagen for P1 bacteriophage kit.  I could treat 
> it like a really big plasmid, but does anyone know how the elution 
> buffers should be modified (if at all?)  Help, help.
> 
> Others have suggested PEG precipitation.
> 
> Any experience appreciated.

I just did a P1 DNA prep last week, and used a Qiagen Maxi (30 ml capacity)
column.  I grew four clones, 2 did real well (>50 ug DNA), 2 did poorly.  I
followed the Qiagen protocol and it turned out fine.  I believe the
problems are endemic to the clones I have--they just didn't grow that well.

Good luck, 

JIM