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Re: [ccp4bb] pointless (1.2.0) and enantiomorphic SG's

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CCP4bb <-- 1999 <-- November 1999 <-- 30 November 1999
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Subject: Re: pointless (1.2.0) and enantiomorphic SG's
From: Ian Tickle I {- dot -} Tickle {- at -} ASTEX-THERAPEUTICS {- dot -} COM
Date: 2007-11-09
Next message:
Subject: Re: pointless (1.2.0) and enantiomorphic SG's
From: Martyn Winn m {- dot -} d {- dot -} winn {- at -} DL {- dot -} AC {- dot -} UK
Date: 2007-11-09


Subject: Re: pointless (1.2.0) and enantiomorphic SG's
From: Garib Murshudov garib {- at -} YSBL {- dot -} YORK {- dot -} AC {- dot -} UK
Date: 2007-11-09

I am for it also. It is a god idea!!

Garib

On 9 Nov 2007, at 13:56, Ian Tickle wrote:

> I like it!
>
> -- Ian
>
>> -----Original Message-----
>> From: owner-ccp4bb@jiscmail.ac.uk
>> [mailto:owner-ccp4bb@jiscmail.ac.uk] On Behalf Of Eleanor Dodson
>> Sent: 09 November 2007 13:51
>> To: Phil Evans
>> Cc: CCP4BB@jiscmail.ac.uk
>> Subject: Re: [ccp4bb] pointless (1.2.0) and enantiomorphic SG's
>>
>> As I often say!!! The mtz format should carry point group and
>> alternate
>> SGs - then be upgraded when youknow the correct SG..
>>
>> Eleanor
>>
>> Phil Evans wrote:
>>> It just picks the first in the list, to store in the output
>> MTZ file,
>>> which can only handle one (92 < 96)
>>> Phil
>>>
>>>
>>> On 8 Nov 2007, at 22:26, Bryan W. Lepore wrote:
>>>
>>>> when pointless (1.2.0) finds enantiomorphic SG's, what is the
>>>> criterion for 'Selecting' one over the other?
>>>>
>>>> e.g. i ran pointless on some tetragonal data, and the
>> enantiomorphs
>>>> SG92/SG96 are selected as strong candidates
>>>>
>>>> Spacegroup TotProb SysAbsProb Reindex
>> Conditions
>>>>

( 92) 0.956 0.956 00l:
>>>> l=4n, h00: h=2n (zones 1,2)
>>>>

( 96) 0.956 0.956 00l:
>>>> l=4n, h00: h=2n (zones 1,2)
>>>>
>>>> ... then pointless reports :
>>>>
>>>> Selecting space group P 41 21 2 as solutions are enantiomorphic
>>>> Best Solution space group P 41 21 2
>>>>
>>>> ... is that b/c pointless can only report one, and SG92
>> came up first?
>>>>
>>>> -bryan
>>>
>>>
>>
>>
>
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