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<DIV><FONT face=Arial size=2>Dear rasmb colleagues,</FONT></DIV>
<DIV><FONT face=Arial size=2>I'm opening H.K. Schachman's
>>ultracentrifugation in Biochemestry (A P) 1959 at<U> page
174</U></FONT></DIV>
<DIV><FONT face=Arial size=2>"11 The effect of pressure
on sedimentation" Schachman citated:</FONT></DIV>
<DIV><FONT face=Arial size=2>"As Svedbergand Pedersen (1940)
pointed out. the high pressure can alter the density</FONT></DIV>
<DIV><FONT face=Arial size=2>and viscosity of the solvent as well as
the v-bar of the solute. The former effects cauase the macromolecules to
sediment more slowly as the pressure is increased.........</FONT></DIV>
<DIV><FONT face=Arial size=2>G.Kegeles dealt with this
phenomena in his works.</FONT></DIV>
<DIV><FONT face=Arial size=2>Some measurements I made myself where outentic
results are given</FONT></DIV><FONT face="Times New Roman" size=5><FONT
face="Times New Roman" size=5>
<DIV align=justify><FONT size=3>>Approaches to determining membrane protein
structures to high</FONT></DIV>
<DIV align=justify><FONT size=3>resolution: do selections of subpopulations
occur?<</FONT></DIV><FONT face="Times New Roman" size=1><FONT
face="Times New Roman" size=3>
<OL>
<LI>
<DIV align=justify>"Micron" 32 (2001)
75–90</FONT></FONT></DIV></LI></OL></FONT></FONT><FONT face="Times New Roman"
size=4><FONT face="Times New Roman" size=4>
<DIV align=justify><FONT size=2>J.P. Rosenbusch*, A. Lustig, M.
Grabo</FONT></FONT></FONT><FONT size=1><FONT size=2><FONT
face="Times New Roman"><FONT face="Times New Roman">1</FONT></FONT><FONT
face="Times New Roman"><FONT face="Times New Roman">, M.
Zulauf</FONT></FONT><FONT face="Times New Roman"><FONT
face="Times New Roman">†</FONT></FONT><FONT face="Times New Roman"><FONT
face="Times New Roman">, M. Regenass</FONT></FONT><FONT
face="Times New Roman"><FONT
face="Times New Roman">2</DIV></FONT></FONT></FONT></FONT><I><FONT
face="Times New Roman" size=1><FONT face="Times New Roman" size=1>
<DIV align=justify><FONT size=3>Biozentrum, University of Basel, Klingelbergstr.
70, CH-4056 Basel, Switzerland</FONT></DIV></I></FONT></FONT><FONT
face="Times New Roman"><FONT face="Times New Roman">
<DIV align=justify>Dedicated to Eduard Kellenberger on the occasion of his 80th
birthday.</DIV>
<DIV align=justify> </DIV>
<DIV align=justify>With friendly regards....ariel <A
href="mailto:ariel.lustig@bluewin.ch">ariel.lustig@bluewin.ch</A></DIV></FONT></FONT></BODY></HTML>