Dear all, Here are some "hexmeric" densities we observed in our 1.6-A resolution 2Fo-Fc map. They are located in between two dimers. Although 7 waters would fit nicely in the densities, we are not sure whether they might be something else (metals?). Any suggestions are welcome. Thanks! Gang __________________________________ Gang Dong, PhD Junior Group Leader Max F. Perutz Laboratories (MFPL) Dr. Bohrgasse 9/3 A-1030 Vienna, Austria Phone: +43-1-4277-61625 FAX: +43-1-4277-9616 http://www.mfpl.ac.at/mfpl-group/group/dong.html