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Plant species differences in particulate matter accumulation on leaf surfaces.
Particulate matter (PM) accumulation on leaves of 22 trees and 25 shrubs was examined in test fields in Norway and Poland. Leaf PM in different particle size fractions (PM(10), PM(2.5), PM(0.2))Expand
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S100A6 binds p53 and affects its activity.
S100A6 (calcyclin) is a calcium-binding protein implicated in many cellular processes and often up-regulated in cancer. Its various biological effects possibly originate from the fact that it mayExpand
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Gastric ghrelin in relation to gender, stomach topography and Helicobacter pylori in dyspeptic patients.
AIM To investigate the level of gastric ghrelin in stomach mucosa of dyspeptic patients in relation to Helicobacter pylori (H pylori) infection, bacterial cytotoxicity, topography and gender. Expand
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Chemical and structural diversity of siRNA molecules.
Short interfering RNAs (siRNAs) are 21-23 nt long double-stranded oligoribonucleotides which in mammalian cells exhibit a potency for sequence-specific gene silencing via an RNA interference (RNAi)Expand
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Crystal structures of thrombin in complex with chemically modified thrombin DNA aptamers reveal the origins of enhanced affinity
Abstract Thrombin-binding aptamer (TBA) is a DNA 15-mer of sequence 5′-GGT TGG TGT GGT TGG-3′ that folds into a G-quadruplex structure linked by two T-T loops located on one side and a T-G-T loop onExpand
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Effect of base modifications on structure, thermodynamic stability, and gene silencing activity of short interfering RNA.
A series of nucleobase-modified siRNA duplexes containing "rare" nucleosides, 2-thiouridine (s(2)U), pseudouridine (Psi), and dihydrouridine (D), were evaluated for their thermodynamic stability andExpand
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Thiolation of uridine carbon-2 restricts the motional dynamics of the transfer RNA wobble position nucleoside
Thiolation of transfer RNA wobble position uridines produces a preferred conformation of the nucleoside in solution at ambient temperature that is of biological significance to codon recognitionExpand
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Catalytic phosphoryl interactions of topoisomerase IB.
The reversible nucleophilic substitution reaction catalyzed by the vaccinia virus type IB topoisomerase has been investigated by measuring the equilibrium and rate effects of stereospecific sulfurExpand
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Synthesis and structure of highly substituted pyrazole ligands and their complexes with platinum(II) and palladium(II) metal ions
Abstract Reaction of 3-methoxycarbonyl-2-methyl- or 3-dimethoxyphosphoryl-2-methyl-substituted 4-oxo-4H-chromones 1 with N-methylhydrazine resulted in the formation of isomeric, highly substitutedExpand
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