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[ccp4bb]: density attached to GLU side chain

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Dear all,

I have an 2.6A map, and found a rod shape ( 4.5 A x 2.5 A )of  strong
density ( 4 sigma of fo-fc map) attached to the GLU OE2 atom.  This
crystal was grown at a condidtion with high concentration of (NH4)2PO4, in
the presence of BME and 20% Glycerol. Any hint of that density ?


Lan Zhou