Dear Dean An example, albeit not a metal, can be found here:- http://journals.iucr.org/s/issues/2007/01/00/xh5011/xh5011.pdf
Such specific damage has a long history:- http://www.sciencedirect.com/science/article/pii/0022024888903223 An X-ray sensitive metals centre is the Mn5Ca OEC of PS II and details can found here :- http://m.pnas.org/content/102/34/12047.long But metals in proteins can also be robust to X-rays and eg verified by parallel non damaging neutron crystallographic studies such as on MnCa concanabalin A . Best wishes John Prof John R Helliwell DSc > On 30 Apr 2014, at 11:33, Dean Derbyshire <dean.derbysh...@medivir.com> wrote: > > Hi all, > Has anyone experienced catalytic metal ions disappearing during data > collection ? > If so, is there a way of preventing it? > D. > > Dean Derbyshire > Senior Research Scientist > <image001.jpg> > Box 1086 > SE-141 22 Huddinge > SWEDEN > Visit: Lunastigen 7 > Direct: +46 8 54683219 > www.medivir.com > > -------------------------------------------------------------------------- > This transmission is intended for the person to whom or the entity to which > it is addressed and may contain information that is privileged, confidential > and exempt from disclosure under applicable law. If you are not the intended > recipient, please be notified that any dissemination, distribution or copying > is strictly prohibited. If you have received this transmission in error, > please notify us immediately. > Thank you for your cooperation.
