Hi Pascal, Is this a membrane protein? I worked on a GPCR that gelled upon high concentration in a detergent/cholesterol solution. It was reversible upon dilution and ran as a monomer by size exclusion chromatography. Detergent assays showed that detergent was not being concentrated in the protein buffer. I was not able to crystallize that receptor. I like to think we stumbled on some kind of cool receptor oligomerization phenomenon. I wish I had done more to characterize the gel instead of cursing the lack of crystals.
Ho Ho Leung Ng University of Hawaii at Manoa Assistant Professor, Department of Chemistry h...@hawaii.edu