mystery band pCDNA3/EcoRI/-PO4

Frances Hannan Zoology flh at
Sun Apr 7 08:44:24 EST 1996

Hi all,

I have a wierd problem with pCDNA3 vector. EcoRI linearizes the plasmid 
fine but when I PO4ase treat the digested vector an extra band appears at 
~0.8kb. This band does not appear in pBSK- treated in parallel with the 
same batch of EcoRI, PO4ase and buffers. I am using Promega enzymes. 
Restriction mapping of the pCDNA3 looks fine and I have just sequenced 
across the polylinker to double check it. Does anyone have any idea what is 
going on????  

Frances Hannan                                       
flh at                               
"I feel like a mosquito in a nudist camp - I know what I ought to do, but 
I don't know where to begin..."

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