Purification and characterization of poly(A) polymerase from Saccharomyces cerevisiae
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The syntheses of azaMan-beta-(1-->6)-C-Glc (4), azaGlc-beta-(1-->6)-C-Glc (5), and azaGal-beta-(1-->6)-C-Glc (6) based upon double reductive amination of acetylenic carbohydrate-derived diketones is described. The required diketones are obtained by additio ...
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Vibrio and Aeromonas spp. secrete an unusual 35-kDa lipase that shares several properties with mammalian lecithin-cholesterol acyltransferase. The Aeromonas hydrophila lipase contains two cysteine residues that form an intramolecular disulfide bridge. Here ...
Wild-type catalase-peroxidase KatG from Mycobacterium tuberculosis as well as a specific mutant (R463L) frequently found in isoniazid-resistant strains have been overexpressed in Escherichia coli, allowing purifn. of sufficient quantities of enzyme for phy ...
Enzymic hydrolyses of naturally occurring protein sources represent complex reactions at a molecular level because of the specificity pattern of proteases and the composition of the substrates involved. In addition, rather global criteria are in practical ...
The structural features of the active site of human monoamine oxidase B (MAO-B) were investigated by affinity labeling and site-directed mutagenesis. The pseudosubstrate inhibitor N-[2-aminoethyl]-5-chloro-2-pyridine carboxamide HCl (lazabemide) can be irr ...
The reaction of d,l-5'-activated nucleotide of adenosine in the presence and absence of montmorillonite gave 60:40 and 96:4 ratios, resp. of the d,d- and l,l:d,l- and l,d-dimers. [on SciFinder (R)] ...
The authors evaluated the RNA binding of all eight possible stereoisomers of LNA. Synthesis of "a-l-xylo-LNA" has been accomplished and the remaining four stereoisomers, all enantiomers of the four synthesized diastereoisomers, are indirectly evaluated b ...
A prototype kinetic model of bacterial glycolysis is formulated and a minimal set of assumptions is postulated that allows the formulation of an approx. math. model. To establish a baseline for future investigations of more complicated situations, it is as ...
The gene coding for urate oxidase, an enzyme that catalyzes the oxidation of uric acid to allantoin, is inactivated in humans. Consequently, urate oxidase is used as a protein drug to overcome severe disorders induced by uric acid accumulation. The structu ...