Hi Pavel, How about the ones I sent you? Amino acids 410-420. Here you have a couple of structures with the same problem, and the region contacts the ligands. We are supposed to hear back from Nature Chemical Biology this week on the manuscript for those structures, so hopefully we will have to deposit them soon:) Kendall On Apr 15, 2010, at 2:18 PM, "Pavel Afonine" wrote:

Hi Everyone,

I'm in search of a structure that has poor or nearly no density for some relatively short loops or ligands. My search criteria are (which are flexible):

- resolution 2-2.5A (slightly higher, slightly lower is ok); - structure is not large (~5000 atoms is absolute max., less is better so I can run tests quicker); - structure is nearly complete and correct - that is everything is good about the structure (almost ready-to-PDB-deposit) apart from problem loops/ligands; - no data pathologies (twinning, severe incompleteness and the likes); - length of problem loops: from 1 to 10 residues; - no restrictions on data and model use (so the structure id may appear in a future publication as an illustration, of course with all proper credits to the source); - it is desirable but not mandatory that a problem loop has some importance.

Please reply to me directly.

Thanks in advance! Pavel.

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