Subject: one question about comparing structures in CHARMM

From: Wei Zhuang <[email-masked]>
Date: Tue, 18 Mar 2003 11:43:46 -0500 (EST)

Hi,all:

I want to compare two structures in charmm, the command I use is:
*******************
coor orie rms
******************8

and charmm gives out
********************
TOTAL SQUARE DIFF IS      5.3526  DENOMINATOR IS     18.0000
       THUS RMS DIFF IS    0.545311
 ALL COORDINATES ORIENTED IN THE MAIN SET BASED ON SELECTED ATOMS.
***********************

my question is:

1)what is the criteria of judging how close these two structures are from
the output above, 

wei zhuang

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