Fractionation of protein components from beer by density gradient centrifugationSpringer Science and Business Media LLC - - 1982
Steen Bech Sørensen, Torben Graves Pedersen, Martin Ottesen
A protein-rich beer fraction obtained by alcohol precipitation has been fractionated by cesium chloride density gradient centrifugation into three fractions. One with buoyant density 1.27 g·ml−1 contained essentially pure protein, while a fraction with buoyant density 1.37 g·ml−1 contained protein and some carbohydrate, probably covalently bound to the protein. A large fraction with a buoyant dens...... hiện toàn bộ
The complete amino acid sequence of copper, zinc superoxide dismutase from Saccharomyces cerevisiaeSpringer Science and Business Media LLC - Tập 44 - Trang 201-217 - 1979
Jack T. Johansen, Carsten Overballe-Petersen, Brian Martin, Villy Hasemann, Ib Svendsen
The amino acid sequence of the copper zinc superoxide dismutase from Saccharomyces cerevisiae has been determined by automated Edman degradation. Peptides were obtained from cyanogen bromide cleavage, Staphylococcus aureus V8 protease digestion, tryptic and chymotryptic digests of the citraconylated reduced and carboxymethylated enzyme, and by further fragmentation of selected peptides with trypsi...... hiện toàn bộ
Δ-aminolevulinic acid formation in the archaebacterium Methanobacterium thermoautotrophicum requires tRNAGluSpringer Science and Business Media LLC - Tập 52 - Trang 363-371 - 1987
Herbert C. Friedmann, Rudolf K. Thauer, Simon P. Gough, C. Gamini Kannangara
By combining three fractions separated from cell extracts of Methanobacterium thermoautotrophicum (strain Marburg) synthesis of δ-aminolevulinic acid from glutamate was obtained. One of the required fractions contained two tRNAs which could be charged with glutamate and separated by high pressure liquid chromatography. Both supported the synthesis of δ-aminolevulinate. The formation of δ-aminolevu...... hiện toàn bộ
Dual capacity for nutrient uptake in tetrahymena importance of the oral uptake system for Fe and Cu uptakeSpringer Science and Business Media LLC - Tập 41 - Trang 81-90 - 1976
Leif Rasmussen, Eduardo Orias
We have reported that a mutant ofTetrahymena pyriformis with heat-sensitive development of the oral apparatus can be grown indefinitely without food vacuoles if the medium is supplemented with folinic acid and a mixture of trace metal salts. We report here that the trace metal mixture can be replaced completely and specifically by salts of iron and copper. Fe(II) and Fe(III) are interchangeable. A...... hiện toàn bộ
Molecular basis of cooperativity in vertebrate muscle thin filamentsSpringer Science and Business Media LLC - Tập 49 - Trang 155-167 - 1984
P. W. Brandt, M. S. Diamond, B. Gluck, M. Kawai, F. Schachat
Extraction of as little as one troponin C per regulatory strand on a thin filament reduces the slope of the pCa/tension relation thus the regulatory units along a thin filament of rabbit psoas fibers are linked cooperatively so that a thin filament activates as a unit. This explains why the pCa/tension relation in skinned fibers has a slope much higher than can be expected by binding of Ca2+ to on...... hiện toàn bộ
1,6-dihydro-NAD as an humidity-induced lactate dehydrogenase inhibitor in NADH preparationsSpringer Science and Business Media LLC - Tập 43 - Trang 171-175 - 1978
Sven Erik Godtfredsen, Martin Ottesen
An authentic mixture of 1,2-, 1,4- and 1,6-dihydro-NAD was characterized by high pressure liquid chromatography. Pure 1,6-dihydro-NAD isolated from this mixture was shown to be a potent inhibitor of lactate dehydrogenase and to exhibit an UV spectrum identical to that of an extensively purified lactate dehydrogenase inhibitor generated by exposing NADH to moisture. The humidity induced inhibitor, ...... hiện toàn bộ