SSX: Difference between revisions

268 bytes added ,  26 December 2016
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find $PWD/../wedge* -name XDS_ASCII.HKL | awk '{print "INPUT_FILE=",$0;print "NBATCH=1 CORRECTIONS=DECAY"}' >> XSCALE.INP
find $PWD/../wedge* -name XDS_ASCII.HKL | awk '{print "INPUT_FILE=",$0;print "NBATCH=1 CORRECTIONS=DECAY"}' >> XSCALE.INP
</pre>
</pre>
 
we obtain in P1
<pre>
<pre>
  SUBSET OF INTENSITY DATA WITH SIGNAL/NOISE >= -3.0 AS FUNCTION OF RESOLUTION
  SUBSET OF INTENSITY DATA WITH SIGNAL/NOISE >= -3.0 AS FUNCTION OF RESOLUTION
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     total      256616  81419    86791      93.8%      54.3%    51.3%  243147    1.43    64.0%    64.6*    0    0.788  17331
     total      256616  81419    86791      93.8%      54.3%    51.3%  243147    1.43    64.0%    64.6*    0    0.788  17331
</pre>
</pre>
 
and feed this to pointless:
 
  pointless xdsin temp.ahkl
  pointless xdsin temp.ahkl


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</pre>
</pre>
 
Based on the P4(2)2(1)2 suggestion, we may try to modify the header of XSCALE.INP to
SPACE_GROUP_NUMBER= 94
SPACE_GROUP_NUMBER= 94
UNIT_CELL_CONSTANTS= 79.1 79.1 38.3 90 90 90
UNIT_CELL_CONSTANTS= 79.1 79.1 38.3 90 90 90
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FRIEDEL'S_LAW=TRUE
FRIEDEL'S_LAW=TRUE
REIDX=0 1 0 0  0 0 1 0  1 0 0 0
REIDX=0 1 0 0  0 0 1 0  1 0 0 0
 
where the last line takes care of the shuffling of axes into the order k,l,h, and obtain
<pre>
<pre>
  SUBSET OF INTENSITY DATA WITH SIGNAL/NOISE >= -3.0 AS FUNCTION OF RESOLUTION
  SUBSET OF INTENSITY DATA WITH SIGNAL/NOISE >= -3.0 AS FUNCTION OF RESOLUTION
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     total      256446  11815    11855      99.7%      64.9%    51.6%  256436    3.61    66.5%    97.9*    1    0.910    9805
     total      256446  11815    11855      99.7%      64.9%    51.6%  256436    3.61    66.5%    97.9*    1    0.910    9805
</pre>
</pre>
Analysis with
  xscale_isocluster -dim 2 -clu 2 temp.ahkl
  xscale_isocluster -dim 2 -clu 2 temp.ahkl
yields a iso.pdb which is far from a single cluster; it is a severely elongated single cloud. We must now investigate whether the data have lower than tetragonal symmetry.
yields a iso.pdb which is not at all a single cluster; it is a severely elongated single cloud. We must now investigate whether the data have lower than tetragonal symmetry.
XSCALEing with
XSCALEing with
  SPACE_GROUP_NUMBER=16
  SPACE_GROUP_NUMBER=16
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     1.80        7927    1570      1701      92.3%    104.8%    225.2%    7811    0.70    116.1%    42.6*    -5    0.425    785
     1.80        7927    1570      1701      92.3%    104.8%    225.2%    7811    0.70    116.1%    42.6*    -5    0.425    785
     total      130885  22874    23173      98.7%      38.3%    41.0%  130103    2.77    42.1%    92.0*    3    0.703  13546
     total      130885  22874    23173      98.7%      38.3%    41.0%  130103    2.77    42.1%    92.0*    3    0.703  13546
 
</pre>
At this point, we run
At this point, we run
  xdscc12 -w XSCALE.1.HKL | grep ^a | sort -nk6
  xdscc12 -w XSCALE.1.HKL | grep ^a | sort -nk6
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   79.10 to  1.80  - Resolution range in file, used for systematic absence check
   79.10 to  1.80  - Resolution range in file, used for systematic absence check
</pre>
</pre>
thus we now know the spacegroup.


== Round 2: using the REFERENCE_DATA_SET ==
== Round 2: using the REFERENCE_DATA_SET ==
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     total      256288  42935    43227      99.3%      13.4%    14.0%  255575  11.63    14.6%    99.6*    21*  0.975  19321
     total      256288  42935    43227      99.3%      13.4%    14.0%  255575  11.63    14.6%    99.6*    21*  0.975  19321
</pre>
</pre>
The structure can now easily be solved with hkl2map:
The structure can now easily be solved with hkl2map!
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