A poly(vinyl chloride) membrane based on a new a-dioxime derivative as membrane carrier was prepared andinvestigated as a Cr(III) selective electrode. The electrode exhibits a good potentiometric response for Cr(III)over a wide concentration range 1.0 x 10-6 to 1.0 x 10-1 M with a slope 19.5+0.5 mV/decade and low detectionlimit of 8.9 x 10-7 M. It has a fast response time < 15 s. The best perfo...

A unique feature of the large hepadnavirus envelope protein (L) is its mixed transmembrane topology, resulting from partial posttranslational translocation of the pre-S domain. Using protease protection analysis, we demonstrate for duck hepatitis B virus an essential role for the small envelope protein (S) in this process, providing the first experimental evidence for an S translocation channel...

To attain a comprehensive membrane proteome of two strains of Corynebacterium glutamicum (L-lysine-producing and the characterized model strains), both sample pretreatment and analysis methods were optimized. Isolated bacterial membranes were digested with trypsin/ cyanogen bromide or trypsin/chymotrypsin, and a complementary protein set was identified using the multidimensional protein identif...

We present the first focused proteome study on human platelet membranes. Due to the removal of highly abundant cytoskeletal proteins a wide spectrum of known platelet membrane proteins and several new and hypothetical proteins were accessible. In contrast to other proteome studies we focused on prefractionation and purification of membranes from human platelets according to published protocols ...

The 64-kDa membrane protein of Bacillus subtilis is evidently involved in the attachment of secreting ribosomes to membrane. On immunoprecipitation with antibody to this protein, the solubilized particulate fraction, with or without prior chemical cross-linking, yields a complex of four proteins (64, 60, 41, and 36 kDa). This "S complex" was found to be associated with membrane-free ribosomes r...

Computational full-atom models of the agonist lipopolysaccharide (LPS)-bound Toll-like receptor 4 (TLR4) embedded into a realistic plasma membrane reveal dynamic functional and structural insights TLR4 activation signaling across membrane, ectodomain bouncing movement, dimerization patterns (symmetric asymmetric) intracellular Toll/interleukin-1 (TIR) domain. These studies unveil molecular aspe...

The combination of hydrophobic membranes and microbial electrolysis cells (MEC) was assessed in two different configurations order to recover ammonia from anaerobically digested pig slurry. Polytetrafluorethylene (PTFE) were inserted both an H-type three-chamber cell (MEC-H) a two-chamber sandwich configuration MEC (MEC-S), fitted with cationic exchange membrane (CEM) dividing the anode cathode...

1. We investigated the membranes of human erythrocytes which completely lack the blood-group antigens S and s (denoted as S-s-) as part of a study of the structure and function of the surface glycoproteins of the human erythrocyte. 2. The S-s-erythrocyte-membrane glycoprotein PAS-3 band was much less intensely stained in comparison with that of the glycoprotein from normal erythrocyte membranes...

Background: The study of rheological properties of blood has special interest since it is a circulating fluid exposed to shear rates during its life time. This work aims to investigate the influence of whole body gamma irradiation on the rheological properties of rat’s blood. The applied shear rate was from 12 to 375 s-1. Low shear viscosity (up to 100 s-1) depends mainly on the erythroc...