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Jim Pflugrath wrote:
> On Fri, 1 Dec 2006, William Scott wrote:
>
>> Is there any reasonable way to distinguish between a water molecule and
>> an
>> ammonium ion in a crystal structure at 2 Å resolution?
>>
>> (Plausible hydrogen bonding schemes can be invoked in which this peak
>> donates
>> either two or four hydrogens for hydrogen bond formation.)
>
> If that's the case, then you probably have a mixture of both entities
> present.
>
Two of the partners are 2'-OH ribose groups, so it really can swing either
way.
>
> [And off topic: It would not be a bad time to learn about and apply
> your mail filtering options wrt Swan ccp4bb :) ]
I sort all my mailing list mail using procmail. Eg:
# ccp4 bb
:0:
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| ${FORMAIL} -A"X-Folder: Bulk" >>xtal_lists_mbox
