In Neurospora, genes not paired during meiosis are targeted by meiotic silencing by unpaired DNA (MSUD). Here, our bimolecular fluorescence complementation (BiFC) study suggests that RNA-directed RNA polymerase, Dicer, Argonaute, and others form a silencing complex in the perinuclear region, with intimate interactions among the majority of them. We have also shown that SAD-2 is likely the ancho...

ion moval of an atom (neutral or charged) from a molecular entity. For example: A chemical reaction or transformation, the main feature of which is the bimolecular reCH3COCH3 + (i-C3H7)2N(CH&OCH;?>+ (i-C3H7)2NH (proton abstraction from acetone) CH4 + C1' H3C' + HCl (hydrogen abstraction from methane) acceptor number (AN)

Three water-soluble cobalt porphyrins have been investigated as water oxidation catalysts via photo-initiation using Ru(II)(bpy)3(2+)/Na2S2O8. The pH dependence of the turnover frequency revealed maximum activity at pH 11. Based on the second order dependence on catalyst concentration for the rate of water oxidation, we suggest a bimolecular radical coupling process as the rate determining step.

TiO2 photocatalysis can be performed for the addition of pyridines to vinylarenes in an anti-Markovnikov manner. Seven examples with considerable yields (56-91%) and selectivity were demonstrated. A comparative survey of the involved process through ESR revealed a novel concerted two electron transfer pathway for these photocatalytic bimolecular addition reactions.

Modern computational methods have become so powerful for predicting the outcome for the H + H2 → H2 + H bimolecular exchange reaction that it might seem further experiments are not needed. Nevertheless, experiments have led the way to cause theorists to look more deeply into this simplest of all chemical reactions. The findings are less simple.

Extrapolation procedures are shown to be useful for obtaining kinetic parameters from irreversible enzymic reactions in which there are two intermediates, under both single-turnover and steady-state conditions. Small excesses of one component are treated as if they were large excesses, which is convenient in practice. The method has also been applied to a non-enzymic reversible bimolecular reac...

[reaction: see text] Tautomeric equilibria involving hydrogen migration in methylacenes were explored computationally using DFT methods. As the aromatic system becomes more extended, the methylene isomer is predicted to become favored. Reasonable-looking pericyclic sigmatropic hydrogen shifts are found to be energetically prohibitive, and bimolecular mechanisms involving radical pair intermedia...

The title bimolecular compound, C(4)H(5)N(3).C(21)H(18)O(2), constructed from 2-aminopyrimidine and 3,3,3-triphenylpropanoic acid, forms a tetramolecular hydrogen-bonded motif via O-H...N, N-H...O and N-H...N contacts. This aggregate organizes to give crystal-packing motifs with hydrophilic and hydrophobic regions.

The potential of using capillary electromigration techniques for biomimicking essential biological interactions is described. most commonly used methodologies with their exploitation in calculations kinetics and biomolecular interaction data are briefly discussed. Experimental approaches bimolecular some selected examples, including lipoproteins, glycosaminoglycan, liposomes DNA or RNA interact...

Atherosclerosis Research Unit, Department of Medicine/Cardiology, Department of Molecular and Medical Pharmacology, Department of Chemical and Bimolecular Engineering, Department of Obstetrics and Gynecology, The Semel Institute for Neuroscience and Human Behavior, Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, Division of Immunology, Beckman Research...