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Hi Andy,<br>
<br>
The "vop unbend" command can straighten the density from a curved
filament. The tricky part is you need a center-line path. You
could define that by placing 3 markers.<br>
<br>
<a class="moz-txt-link-freetext" href="http://www.cgl.ucsf.edu/chimera/docs/UsersGuide/midas/vop.html#unbend">http://www.cgl.ucsf.edu/chimera/docs/UsersGuide/midas/vop.html#unbend</a><br>
<br>
Bending a straight filament map to follow a curve is not
available. This is the inverse of the vop unbend operation. You
can do a fake version of this by making a helical curve around the
straight density map and then using vop unbend. That won't center
the filament on the helical path, but it will create something
similar by straightening the helix which I think will twist the
density.<br>
<br>
Tom<br>
<br>
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<td style="font: inherit;" valign="top">Hi Tom-
<div><br>
</div>
<div>
<div>Not sure if there is an option for this -</div>
<div><br>
</div>
<div>1. can we bend an electron density map of a
filament/tube by an small angle ? </div>
<div><br>
</div>
<div>2. Can we generate an helix using a density map of
a filament.</div>
<div>An example will be that of the bacterial flagella -
it has the local helical arrangement of the flagellin
molecule and then thAT ARRANGEMENT extends over
several micrometers like a "sinusoidal wave" with
different helical arrangement to the filament axis.</div>
<div><br>
</div>
<div>Best</div>
<div>Andy</div>
<div><br>
</div>
<br>
Dr. Anindito Sen (Ph.D)<br>
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<br>
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