SDS-polyacrylamide gel electrophoresis of outer membrane (OM) proteins of different mucoid strains of P. aeruginosa revealed a protein of about 54 kDa that was absent in nonmucoid strains. This 54 kDa protein was expressed under iron-restricted and iron sufficient growth conditions. Electrophoretic mobility of the 54 kDa protein was modified by the solubilization temperature as well as by the a...

The first pathway-specific step in the biosynthesis of the core membrane diether lipids in archaebacteria is the alkylation of the primary hydroxyl group in (S).glyc. eryl phosphate by geranylgeranyl diphosphate. The reaction is catalyzed by (S)-3-0·geranylgeranylglyceryl phosphate «S)-GGGP) synthase. The cytosolic enzyme was purified to homogeneity from the moderately thermophilic archae bacte...

An adenosine-assimilating bacterium, Klebsiella sp. strain LF1202, inducibly formed a novel nucleoside phosphorylase which acted on both purine and pyrimidine nucleosides when the cells were cultured in medium containing adenosine as a sole source of carbon and nitrogen. The enzyme was purified (approximately 83-fold, with a 17% activity yield) to the homogeneous state by polyacrylamide gel ele...

The structural proteins of vesicular stomatitis virus (VSV) Indiana, VSV New Jersey, Chandipura virus and Piry virus were compared by using two different SDS-polyacrylamide gel electrophoresis systems. The G and M proteins of the Indiana serotype had different electrophoretic mobilities from the corresponding proteins of VSV New Jersey, Chandipura virus and Piry virus in a continuous-SDS (CONT-...

Histidine decarboxylase was purified 800-fold from the kidneys of thyroxine-treated mice. The purification procedure included precipitation of protein from a crude supernatant after heating it to 55 degrees C at pH 5.5, fractionation with (NH4)2SO4, phosphocellulose column chromatography, chromatofocusing, DEAE-Sepharose column chromatography, gel filtration on Sephacryl S-300 and preparative p...

Initial studies, by using polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulfate (SDS), led to the attractive hypothesis that the cholera exo-enterotoxin (choleragen) consisted of two noncovalently linked peptides of 56,000 and 28,000 molecular weight. The spontaneous toxoid (choleragenoid) appeared to be identical with the 56,000 molecular weight piece. The results appear...

The present work describes a procedure for determining apolipoproteins (apo) B-100 and B-48 in subfractions of triglyceride-rich lipoproteins by analytical sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) with Coomassie staining. The chromogenicity of the two apoB species was found to be almost equal, and independent of lipoprotein particle size. Both proteins were sensitive...

Quantitative analysis of the phospholipid composition of pulmonary surfactant preparations has been achieved by a modification of the phosphorus-31 nuclear magnetic resonance method of E London and G Feigenson (J. Lipid Res. 20, 408-412, 1979). Resolution of the protein components by a 2-dimensional isoelectric-focussing-SDS/polyacrylamide-gel-electrophoresis technique is reported for the first...

A “ready-to-use” preparation for the production of frankfurter type sausage („Activa WM“, AJINOMOTO Europe Sales GmbH, Hamburg) was used for the studies. Protein was determined by a modified method according to Bradford [1]. Results were calculated using the absorbance quotient of A590nm and A450nm. SDS polyacrylamide gel electrophoresis (SDS-PAGE) was carried out according to Laemmli [2] on a ...

Abbreviations : apo, apolipoprotein; CE-OOH, cholesteryl ester hydroperoxides; RP-HPLC, reversed-phase high-performance liquid chromatography; LDL, low-density lipoprotein; SDS-PAGE, sodium dodecyl sulfate-polyacrylamide gel electrophoresis; TBARS, 2-thiobarbituric acid-reactive substances; TBS, Tris-HCl-buŠered saline; a-Toc, a-tocopherol; VLDL, very-low-density lipoprotein Biosci. Biotechnol....