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RE: [ccp4bb]: Mystery molecule

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As a postscript, if you "successfully" refined the central atom as
phosphorous, it could be either Mg or Ca...check the bond lengths and
B-factors. Could also be Na or K, but these possibilities are less likely,
unless your crystallization conditions contain very high concentrations of
those ions.

 David Borhani, Ph.D.
 Senior Research Chemist I
 Southern Research Institute		Tel:	(205) 581-2555
 2000 Ninth Avenue South		Fax:	(205) 581-2877
 Birmingham, AL 35205 USA		E-mail:	borhani@sri.org