try a frozen xtal ...

On Fri, 14 Oct 2011 13:12:12 +0800
 ChenTiantian <chentiantian2...@gmail.com> wrote:
> Hi there,
> I am processing a dataset which has bad ice rings (as you
> can see in the
> attach png file).
> I tried both XDS and imosflm, and got similar results, it
> seems that adding
> " EXCLUDE_RESOLUTION_RANGE" cannot get rid of the effects
> of the ice rings.
> the following is part of the CORRECT.LP which is the
> second attached file,
> you can find more details there.
> 
>   SUBSET OF INTENSITY DATA WITH SIGNAL/NOISE >= -3.0 AS
> FUNCTION OF
> RESOLUTION
>  RESOLUTION     NUMBER OF REFLECTIONS    COMPLETENESS
> R-FACTOR  R-FACTOR
> COMPARED I/SIGMA   R-meas  Rmrgd-F  Anomal  SigAno   Nano
>    LIMIT     OBSERVED  UNIQUE  POSSIBLE     OF DATA
>   observed
> expected                                      Corr
> 
>      4.24       37152    5537      5545       99.9%
>      46.9%     52.7%
> 37150    2.48    50.8%    19.4%   -28%   0.513    5136
>      3.01       55344    9002      9840       91.5%
>      62.7%     65.1%
> 55116    1.76    68.3%    48.1%   -28%   0.520    7760
>      2.46       84636   12699     12703      100.0%
>      67.4%     84.7%
> 84634    1.55    73.0%    54.2%   -19%   0.513   12104
>      2.13       97910   14743     14987       98.4%
>     254.5%    199.3%
> 97908    0.16   276.2%  4899.9%   -23%   0.473   14037
>      1.90      110260   16846     16940       99.4%
>     299.2%    303.3%
> 110245    0.06   325.0%   -99.9%   -17%   0.422   15995
>      1.74      118354   18629     18744       99.4%
>    1062.0%   1043.6%
> 118317   -0.20  1156.4%   -99.9%   -13%   0.380   17414
>      1.61      122958   20193     20331       99.3%
>     967.5%   1571.1%
> 122868    0.10  1059.7%   987.3%    -2%   0.402   18348
>      1.51      125075   21554     21794       98.9%
>     838.9%   1355.1%
> 124933    0.08   922.6%  1116.9%    -1%   0.402   18977
>      1.42       72057   17042     23233       73.4%
>     640.8%    775.3%
> 70391    0.08   732.5%   826.7%    -8%   0.425   10003
>     total      823746  136245    144117       94.5%
>     166.4%    166.7%
> 821562    0.40   181.1%   296.7%   -15%   0.435  119774
> 
> Note that I/SIGMA of each resolution shell is <2.5, so
> how should I do to
> process the dataset properly? Any suggestion about this
> super ice rings?
> Thanks!
> 
> Tiantian
> 
> -- 
> Shanghai Institute of Materia Medica, Chinese Academy of
> Sciences
> Address: Room 101, 646 Songtao Road, Zhangjiang Hi-Tech
> Park,
> Shanghai, 201203

Dr Stefan Gerhardt
Albert-Ludwigs-Universität Freiburg
Inst.f.Org.Chem.u.Biochem
Albertstrasse 21
79104 Freiburg
Tel. +49 761 2035970
Fax. +49 761 2036161

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