On Thu, 2012-01-12 at 09:52 +0000, Patel, Joe wrote: > Do you have ultra-high resolution? Something I did not…. Are there > many examples in the pdb of proteins with Li+ refined?
http://www.ebi.ac.uk/thornton-srv/databases/cgi-bin/pdbsum/GetPage.pl?pdbcode=n/a&template=het2pdb.html¶m1=_LI 39 in total. Some are fairly low resolution (2.8A), and only five are higher than 1.2A. I'd think that placing lithium ion should be based on some extra-crystallographic evidence, plus maybe some structural considerations such as correctly placed coordinating ligands. -- Edwin Pozharski, PhD, Assistant Professor University of Maryland, Baltimore ---------------------------------------------- When the Way is forgotten duty and justice appear; Then knowledge and wisdom are born along with hypocrisy. When harmonious relationships dissolve then respect and devotion arise; When a nation falls to chaos then loyalty and patriotism are born. ------------------------------ / Lao Tse /