native gels for preparative electrophoresis

[Joachim Kremerskothen]

Hey netters,

we would like to use preparative electrophoresis (BioRads prep cell) to
purify a ribonucleoprotein particle (ca. 300 kD). Any suggestions for an
suitable gel system?

Please mail to: kremers at uni-muenster.de

Thanx in advance.
                     Joey