Excellent point.  I've heard apocryphal stories of someone obtaining beautiful 
salt crystals (magnesium ammonium phosphate) by trying to crystallize an ATPase 
with ADP and Mg++ using (NH4)2SO4 as a precipitant.  Wait long enough, and the 
ADP becomes ATP plus AMP, the ATPase takes the 3rd phosphate off, and then the 
salt crystals grow.  

Yours sounds like a much less depressing "accident"!

________________________________________
From: CCP4 bulletin board [CCP4BB@JISCMAIL.AC.UK] on behalf of Phil Evans 
[p...@mrc-lmb.cam.ac.uk]
Sent: Thursday, January 19, 2017 4:37 PM
To: CCP4BB@JISCMAIL.AC.UK
Subject: Re: [ccp4bb] CCP4BB Digest - 13 Jan 2017 to 14 Jan 2017 (#2017-15)

Remember that 2xADP can disproportionate into ATP + AMP

> On 19 Jan 2017, at 20:54, Panneerselvam, Saravanan 
> <saravanan.panneersel...@desy.de> wrote:
>
> Dear All,
> Sorry for the little bit off topic. Is there a possibility for covalent
> bond formation between beta phosphate of ADP and acetate molecule both
> are coordinated by divalent metal ions? I am working on a Kinase
> structure  which was crystallized with ADP and in presence of 1M sodium
> acetate. We observed additional density around ADP that fits perfectly
> like a gamma phosphate , mimicking like ATP bound state, surrounded and
> coordinated by two metal ions(resolution is 1.4A). There is a change in
> space group (from I212121 to P212121 ) and further important
> conformation changes are observed around ATP binding pocket and distant
> region. This is the only xtal we obtained in this space group, and all
> other xtals(measured 10 xtals)  from the same plate belong to I212121.
>
>
>
> Thanks your help and time!
>
> Saravanan
> ----- Original Message -----
> From: "CCP4BB automatic digest system" <lists...@jiscmail.ac.uk>
> To: CCP4BB@JISCMAIL.AC.UK
> Sent: Sunday, 15 January, 2017 01:01:37
> Subject: CCP4BB Digest - 13 Jan 2017 to 14 Jan 2017 (#2017-15)
>
> There are 2 messages totaling 45 lines in this issue.
>
> Topics of the day:
>
>   1. Phenix (2)
>
> ----------------------------------------------------------------------
>
> Date:    Sat, 14 Jan 2017 20:58:09 +0000
> From:    D Bonsor <dbon...@ihv.umaryland.edu>
> Subject: Phenix
>
> Is the phenix website down? Anyone know when it will be back up?
>
> ------------------------------
>
> Date:    Sat, 14 Jan 2017 14:45:06 -0800
> From:    Pavel Afonine <pafon...@gmail.com>
> Subject: Re: Phenix
>
> See notice on Phenix mailing list that answers your question.
>
> On Sat, Jan 14, 2017 at 12:58 PM, D Bonsor <dbon...@ihv.umaryland.edu>
> wrote:
>
>> Is the phenix website down? Anyone know when it will be back up?
>>
>
> ------------------------------
>
> End of CCP4BB Digest - 13 Jan 2017 to 14 Jan 2017 (#2017-15)
> ************************************************************

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