On Wed, 2010-02-03 at 18:26 +0100, Mark J. van Raaij wrote:
> as it appears to bear near the guanidine group of an arginine, I would  
> suggest it is a partially occupied and disordered sulphate and/or  
> phosphate.

If it's a sulphate, a look at the anomalous map should show something.

-- 
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All Things Serve the Beam
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                               David J. Schuller
                               modern man in a post-modern world
                               MacCHESS, Cornell University
                               schul...@cornell.edu

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