From: Matthew Parker <parker@topaz.microbio.uab.edu>
  To  : rasmb@bbri.harvard.edu
  Date: Mon, 07 Jul 1997 14:52:00 -0500

Required purity for AUC

Hi! I would like to know people's views on what the minimum acceptable
purity level is for studying proteins by analytical ultracentifugation
(particularly sedimentation equilibrium). I try to obtain >99% whenever
possible; is a slightly lower purity likely to cause much trouble? (I
realize that it depends on the relative extinction coefficients of the
sample and contaminant.)

	Thanks!

	Matthew Parker