##  find-RotAx-ReOriMat.pl:
##  The following 4x4 matrix [1 .. 16] 
##  orients the opened form so
##  that the axis of rotation is along the z-axis and
##  the origin is at the molecular centroid.
##  When this done the protein motion can be expressed
##  as a rotation angle [17] 
##  followed by a translation vector [18 ..20]
-0.450958	 0.693112	-0.562345	39.136390
 -0.780136	 0.000000	 0.625610	-94.512930
  0.433618	 0.720830	 0.540722	-103.956230
  0.000000	 0.000000	 0.000000	 1.000000
 
21.5792 
 0.928049	-0.163722	-0.772060

##  The reorientated domains of the opened form
##  are stored in the following two files:
o1r.pdb o2r.pdb