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[ccp4bb]: SUMMARY: mystery molecule

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Dear All,

It looks as if several people have hit the nail on the head, including David
Borhani, Andreas Bracher and Maria Romao (and probably several others by the
time this arrives!). The molecule looks like 2 citrates coordinating a

In fact our protein starts off in 0.5 M KCl and is subsequently crystallized
from 100 mM citric acid. So it is probably 2 citrates coordinating a

Thanks for the speedy response,



Dr. David M. Lawson
Biological Chemistry Dept.,
John Innes Centre,
NR4 7UH, UK.
Tel: +44-(0)1603-450725
Fax: +44-(0)1603-450018
Email: david.lawson@bbsrc.ac.uk