[ccp4bb] hkl2000 license

2009-03-24 Thread Keith Romano
doesn't seem to work. Any suggestions/help will be greatly appreciated. Thanks very much, Keith Romano Department of Biochemistry & Molecular Pharmacology 970L Lazare Research Building University of Massachusetts Medical School 364 Plantation Street Worcester, MA 01605

[ccp4bb] PEG3350-based cryoprotectant

2009-02-14 Thread Keith Romano
Hi all, I have protein crystals in complex with substrate grown in 20-30% (w/ v) PEG 3350, 4% (w/v) ammonium sulfate, and 0.1M sodium MES buffer at pH 6.5. I purify and concentrate my protein in a high salt buffer (0.5M NaCl, 0.1M sodium MES at pH 6.5, 10% glycerol, 2mM DTT). I grow my cr

[ccp4bb] Refinement problems

2008-12-03 Thread Keith Romano
Hi all, I am new to the process of refinement, so excuse me in advance if I don't provide all the necessary details. I collected three data sets of a particular protein in complex with three different substrates (one protein bound to one substrate for each structure). One of the crystals