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<DIV><FONT size=2>Peter</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2>There is a discussion in a review Robley & I wrote in Ann
Rev Biophys Bioeng 1983, 12: 211-35 of the relevant features - see top of page
218. The rule of thumb is MT's above 1 um scatter light proportionally to
there mass & thus subunit #, but structural transitions to & from sheets
(Detrich et al 1985 JBC 260: 9479; Vulevic & Correia 1997 Biophys J
72: 1357), & the wavelength dependence of scattering (Camerini-Otero &
Day 1978 Biopolymers 17: 2241) makes it more complicated.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2>The original ref is Berne 1974 J. Mol Biol 89: 756.
</FONT></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>-------------------------------------------------------------------<BR> Dr.
John J. "Jack" Correia<BR> Department of Biochemistry<BR> University
of Mississippi Medical Center<BR> 2500 North State Street<BR> Jackson,
MS 39216<BR> (601)
984-1522
<BR> fax (601)
984-1501
<BR> email address: <A
href="mailto:jcorreia@biochem.umsmed.edu">jcorreia@biochem.umsmed.edu</A>
<BR> homepage location: <A
href="http://www2.umsmed.edu/dept/biochemistry/correia.html">http://www2.umsmed.edu/dept/biochemistry/correia.html</A>
<BR> dept homepage location: <A
href="http://www2.umsmed.edu/dept/biochemistry/biochem1.html">http://www2.umsmed.edu/dept/biochemistry/biochem1.html</A><BR>-------------------------------------------------------------------<BR> <BR> <BR><BR><BR>>>>
Peter Prevelige <prevelig@uab.edu> 11/09/01 08:59AM
>>><BR>----------------------------------------------------------------------------------<BR>The
older archived RASMB emails can be found at:<BR><A
href="http://rasmb-email.bbri.org/rasmb_archives">http://rasmb-email.bbri.org/rasmb_archives</A><BR>and
current archives at<BR><A
href="http://rasmb-email.bbri.org/pipermail/rasmb/">http://rasmb-email.bbri.org/pipermail/rasmb/</A><BR>Search
All the Archives at:<BR><A
href="http://rasmb-email.bbri.org/rasmb_search.html">http://rasmb-email.bbri.org/rasmb_search.html</A><BR>----------------------------------------------------------------------------------<BR><BR>It
is my recollection (from microtubule work) that the turbidity from <BR>a
solution of long rods is simply proportional to the total number of <BR>subunits
in those rods, and does not depend on the distribution of <BR>lengths. Is this
in fact the case? In what length/wavelength regime? <BR>Can someone point me to
a reference. Thanks<BR><BR>Peter<BR>-- <BR>Peter E. Prevelige
Jr.<BR>Associate Professor<BR>Dept. of Microbiology, BBRB 416/6<BR>Univ. of
Alabama @ Birmingham<BR>845 19th St. South<BR>Birmingham AL. 35294-2170<BR>Phone
205 975-5327<BR>FAX 205 975-5479<BR>prevelig@uab.edu<BR><A
href="http://www.microbio.uab.edu/faculty/prevelige/prevelige-p.htm">http://www.microbio.uab.edu/faculty/prevelige/prevelige-p.htm</A><BR><BR>mailing
address:<BR>UAB Dept. of Microbiology<BR>BBRB 416/6<BR>1530 3RD AVENUE
SOUTH<BR>BIRMINGHAM, AL.
35294-2170<BR>_______________________________________________<BR>RASMB mailing
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