Sean Seaver wrote:
Better yet, RbBr? and pH MES, MOPS, and HEPES with RbOH?
I haven't checked the price.
Including shipping in the US
RbBr: 50 g 99% pure is ~$150.
RbOH: 25g 99+% pure in 50 % water runs about ~$120.
It would be interesting to see how the substitution would influence the
crystallization or crystal integrity such as a quick soak just before data
collection.
I seem to remember that Br(-) at high concentrations is
pretty chaotropic. Something about NaBr wash to remove
peripheral protein from membranes.
eab