lysis of Ecoli

Tom Dougherty Doughert at synapse.bms.com
Mon Dec 9 11:58:13 EST 1996

In article <32AB87C9.131A4030 at ix.netcom.com>, Robert Presswood <rpressw at ix.netcom.com> says:
>J. Dennis Pollack wrote:
>> Help! I need a lysis technique to release cytoplasmic enzymes from transformed
>> Ecoli. I cant denature the proteins and hence cant use some of the more
>> frequently advertised techs. I suspect lysozyme will work, but I dont want to
>> sonicate if I can avoid it. The procedures in Maniatis or Current Protocols
>> are not detailed enough. Can anyone help? Thanks a lot. Dennis

The best method may be the alkaline Tris-Cl, EDTA & lysozyme method.  This is
similar to the DNA/plasmid extraction protocols, but if you omit the high glucose 
concentrations, the cells will readily lyse after a brief time at 37C. Sonication 
should not be necessary to obtain good lysis in this case. You may need to add 
excess MgSO4 and DNAse subsequent to lysis to decrease viscosity.

Tom Dougherty

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