From: Richard M Thomas <rthomas@ifp.mat.ethz.ch>
  To  : rasmb@bbri.harvard.edu
  Date: Tue, 22 Jun 1999 17:42:31 +0200

Helical Peptides

Jon,
	(a) Can you rule out charge effects? 
	(b) Have you run MS or electrophoresis on samples after centrifugation to
                     	check their integrity? Exogenous proteases
(+bacteria) can be a real pain.

Sorry for the untoward brevity
Richard

Dr Richard M Thomas
Inst. für Polymere
ETH-Zentrum
CH-8092 Zürich
Switzerland
(tel) +41 1 632 5540
(fax) +41 1 632 1073