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<DIV><FONT size=2 face=Arial>Dear rasmb members, dear Marina Fasolini and
who is interested....</FONT></DIV>
<DIV><FONT size=2 face=Arial>I am close to 80 and long
time retired, so out of Auc activity. Just I took out a
paper who deals with</FONT></DIV>
<DIV><FONT size=2 face=Arial>low size peptides >> PNAS 27
Sept 2005 vol 102 N° 39 13891- 13896<<see also
supplementary infor.</FONT></DIV>
<DIV><FONT size=2 face=Arial>( written by Richard A
Kammerer,D Kos...P Prog.,.S Honn...;D Avi...; Ariel Lustig
<U>Auc</U>, F K Wink...,J </FONT>
<DIV><FONT size=2 face=Arial>J Pet..and M O
Steinmetz)</FONT></DIV>
<DIV><FONT size=2 face=Arial>WE run only
sed-eqilibr. runs . Sed-vel. does not give Mw"s
results. As it was an aggregation system with a
few monomer , we try to fill the Ds Cells with a
short column of about 1mm. so </FONT></DIV>
<DIV><FONT size=2><FONT face=Arial>the mid of the column gives
an average Mw if the used rotor speed is not
too high</FONT><FONT face=Arial>. we tested several
peptide concentrations; sure that different conc. in the
mid of each column gives different values, that
makes possible to extrapolate to lowest
conc.</FONT></FONT></DIV>
<DIV><FONT size=2 face=Arial>I hope that my explanation and
the Pnas paper may help you
farther....ariel</FONT></DIV>
<DIV><FONT size=2 face=Arial><A
href="mailto:ariel.lustig@bluewin.ch">ariel.lustig@bluewin.ch</A></FONT></DIV></DIV></FONT></DIV></BODY></HTML>