Sorry for the non-ccp4 question. I am having trouble to miniprep plasmid from yeast. The plasmid is pCTCON2 and the yeast strain is EBY100. I am using Zymoprep Yeast Plasmid Miniprep II kit. I grow the culture in SDCAA medium to OD0.3 and spin down 1.5ml
cells. The pellet was resuspended in solution 1 supplemented with Zymolyase and was incubated for 1 hr. I followed the manual exactly for the rest steps. However, I have never been able to recover any plasmid. There is nothing or smear in the agarose gel and
there is no colony after transformation to DH5alpha after one overnight incubation at 37. The existence of the plasmid in the yeast has been confirmed by the ability to grow in the nutrition deficient medium SDCAA and the expression of plasmid protein in SGCAA
medium was observed by FACS. I am wondering if someone here can shine some light on this issue. Any thoughts or suggestions are welcome.
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