From: Rao, Guru <RAOG@phibred.com>
  To  : rasmb@bbri.org
  Date: Wed, 13 Oct 1999 10:51:22 -0500

sedimentation equilibrium runs

Colleagues:

As I do not have access to an analytical ultracentrifuge in my company, I
was wondering if there was any facility out there that would be willing to
run a couple of samples for molecular weight determinations by sedimentation
equilibrium. I have a wild type protein which forms a dimer and has a MW
>50,000 Daltons and a mutant that we are in the process of characterizing. I
would appreciate hearing from any of you. Thanks,

Guru Rao
Senior Scientist
Pioneer Hi-Bred International, Inc.
7300 NW 62nd Avenue, P.O. Box 1004
Johnston, Iowa 50131-1004
phone: (515) 270-3576
fax:      (515) 253-2149
e-mail: raog@phibred.com