Hello all,

Being
a novice in this field, I have a rudimentary question re: Superpose
results.  I did an alignment using Superpose of a liganded protein with
the native protein (2 molecules in the ASU).  BEcause it was the same
protein I used the default to do an atom-by-atom superimposition.  I
also did an alighment using SSM with the same protein in a different
species (which seemed logical to me at the time since they are  similar
but not identical sequences).  In any case, with SSM, the analysis
gives you an rmsd value which I believe is typical.  However for my
atom-by-atom alignment, the values reported are
 RMS       B DISPLACEMENT, 
          AVERAGE   B DISPLACEMENT
          RMS     XYZ DISPLACEMENT 
         AVERAGE XYZ DISPLACEMENT 
          MAXIMUM XYZ DISPLACEMENT

For
me this was useful as I could pinpoint where the major change was upon
binding of ligand as well as give the closeness of the alignment. 
However, I was told that generally one would report an rmsd value
rather than rms, average, and maximum displacement.  So, my question is:

Is
the rms xyz displacement equivalent to an rmsd?  If not, can one
calculate the rmsd from the results of the analysis.  What is the
typical way one would report the results of this analysis.

Thank you very much for your patience.
Mona Rahman


--------------------------------------------------- 
Mona N. Rahman, Ph.D.
Dept. of Biochemistry/Pharmacology & Toxicology
Botterell Hall, Rooms 623 and 634 (lab)
Queen's University, Kingston, ON, K7L 3N6
Phone:  613-533-2993, 613-533-6293 (lab)
E-mail:  [EMAIL PROTECTED]


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