Understanding the Unusual Response to High Pressure in KBeBOF.

Strong anisotropic compression with pressure on the remarkable non-linear optical material KBeBOF has been observed with the linear compression coefficient along the c axis found to be about 40 times larger than that along the a axis. An unusual non-monotonic pressure response was observed for the a lattice parameter. The derived bulk modulus of 31 ± 1 GPa indicates that KBeBOF is a very soft oxide material yet with stable structure up to 45 GPa.

Staphylococcal protein A containing phospholipid monolayers on aqueous and solid surfaces.

The staphylococcal protein A containing monolayer is characterized on both aqueous and solid surfaces. The density of SpA in dipalmitoylphosphatidic acid (DPPA) monolayers is determined from ultraviolet spectroscopy. The influence of calcium on the SpA concentration in the monolayer is also investigated.

Characterization of modified staphylococcal protein A containing phospholipid monolayer on both solution and slide surfaces.

A method is described for incorporation of water-soluble protein Staphylococcal protein A (SpA) into phospholipid monolayer using covalent protein-lipid conjugates in detergent solution. The amphiphilic conjugates have solubility properties very similar to intergral membrane proteins. When the conjugates are applied into dipalmitoyl-phosphatidic acid monolayer, a protein containing monolayer is formed on subphase surface.