Dear Elanor et al, On Mon, Mar 22, 2010 at 09:30:31AM +0000, Eleanor Dodson wrote: > A peak in a self rotation does NOT mean you have a dimer or a trimer > - just that one molecule in the asu can be related to another by the > given operator.
Exactly - and sometimes even the notion of 'molecule' breaks down: the self-rotation function couldn't care less about what we call 'molecule'. You can get peaks in the self-rotation function even if only single molecule is present: * one helix matches any other helix pretty well * you can place a rough 2-fold axis into a beta-sheet * two domains with a similar fold, TIM barrels ... etc I guess that's why choosing the radii can be quite important. Cheers Clemens -- *************************************************************** * Clemens Vonrhein, Ph.D. vonrhein AT GlobalPhasing DOT com * * Global Phasing Ltd. * Sheraton House, Castle Park * Cambridge CB3 0AX, UK *-------------------------------------------------------------- * BUSTER Development Group (http://www.globalphasing.com) ***************************************************************
