<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
</head>
<body text="#000000" bgcolor="#ffffff">
Hi Ira,<br>
<br>
I don't know of any table of maximal solvent accessible surface
areas for each residue type when bounded by glycines. Maybe someone
on the Chimera mailing list will know.<br>
<br>
A Chimera Python script could run through the PDB and accumulate
per-residue surface area statistics. One trouble with that would be
that surface calculation fails in Chimera in some percentage of
cases (~5%) due to numerical problems.<br>
<br>
Tom<br>
<br>
<blockquote cite="mid:4D0681FE.2050207@psu.edu" type="cite">
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
Hi Tom,<br>
<br>
Love the software. Do you have a table for calculating the maximum
available surface area for amino acids eg.(Gly-Xxx-Gly) so that I
can get a relative percentage exposed surface area from the
calculations? Do you know how to find one in the literature? Has
anyone written a program that describes the possible surface
exposure for a residue in a particular secondary structure and/or
a particular sequence? This maximal value would certainly be
different depending on the local sequence and structure. For
example, a residue in the middle of a helix would have to be
shielded from the solvent by the i+4 and i-4 residues, and the
size of those residues would matter.<br>
<br>
Thanks,<br>
Ira<br>
<br>
<br>
On 12/10/10 2:41 PM, Tom Goddard wrote:
<blockquote cite="mid:4D02826F.3010302@sonic.net" type="cite">
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
Hi Sumitro,<br>
<br>
I made a Chimera video tutorial showing how to determine which
residues are on the surface.<br>
<br>
<a moz-do-not-send="true" class="moz-txt-link-freetext"
href="http://www.cgl.ucsf.edu/chimera/videodoc/surfaceresidues/index.html">http://www.cgl.ucsf.edu/chimera/videodoc/surfaceresidues/index.html</a><br>
<br>
Tom<br>
</blockquote>
</blockquote>
<br>
</body>
</html>