magic/voodoo miniprep

Cornelius Krasel krasel at
Wed Feb 9 10:58:13 EST 1994

shiha02 at wrote:

: I have a plasmid, pSP1, containing an insert, that I am trying to
: digest with sph1 (The site should be in the insert). Now, if I purify
Apart from what has been written about Promega Kits of all kinds I have
found SphI to be a quite "unreliable" enzyme. Sometimes it cuts,
sometimes it cuts partially only. I have not found (yet) to cut it
not at all, though :-) It also seems to depend on the vector you want
to cut (pUC18 usually works fine).


/* Cornelius Krasel, Abt. Lohse, Genzentrum, D-82152 Martinsried, Germany */
/* email: krasel at                 fax: +49 89 8578 3795 */
/* "People are DNA's way of making more DNA." (Edward O. Wilson, 1975)    */

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