88 research outputs found
Systems-Based Design of Bi-Ligand Inhibitors of Oxidoreductases: Filling the Chemical Proteomic Toolbox
Genomics-driven growth in the number of enzymes of unknown function has created a need for better strategies to characterize them. Since enzyme inhibitors have traditionally served this purpose, we present here an efficient systems-based inhibitor design strategy, enabled by bioinformatic and NMR structural developments. First, we parse the oxidoreductase gene family into structural subfamilies termed pharmacofamilies, which share pharmacophore features in their cofactor binding sites. Then we identify a ligand for this site and use NMR-based binding site mapping (NMR SOLVE) to determine where to extend a combinatorial library, such that diversity elements are directed into the adjacent substrate site. The cofactor mimic is reused in the library in a manner that parallels the reuse of cofactor domains in the oxidoreductase gene family. A library designed in this manner yielded specific inhibitors for multiple oxidoreductases
Fabrication, structure and properties of epoxy/metal nanocomposites
Gd2O3 nanoparticles surface-modiïŹed with IPDI were compounded with epoxy. IPDI provided an anchor into the porous Gd2O3 surface and a bridge into the matrix, thus creating strong bonds between matrix and Gd2O3. 1.7 vol.-% Gd2O3 increased the Youngâs modulus of epoxy by 16â19%; the surface-modiïŹed Gd2O3 nanoparticles improved the critical strain energy release rate by 64.3% as compared to 26.4% produced by the unmodiïŹed nanoparticles. The X-ray shielding efïŹciency of neat epoxy was enhanced by 300â360%, independent of the interface modiïŹcation. Interface debonding consumes energy and leads to crack pinning and matrix shear banding; most fracture energy is consumed by matrix shear banding as shown by the large number of ridges on the fracture surface
Spin Caloritronics
This is a brief overview of the state of the art of spin caloritronics, the
science and technology of controlling heat currents by the electron spin degree
of freedom (and vice versa).Comment: To be published in "Spin Current", edited by S. Maekawa, E. Saitoh,
S. Valenzuela and Y. Kimura, Oxford University Pres
Surface engineering and self-cleaning properties of the novel TiO2/PAA/PTFE ultrafiltration membranes
Molecular analysis of phylogeographic subspecies in three Ponto-Caspian sturgeon species
Acidâbase and electrolyte abnormalities in heart failure: pathophysiology and implications
Effect of clay dispersion on the synergism between clay and intumescent flame retardants in polystyrene
Enhancing antireflection property of silicon through direct picosecond laser surface texturing
Nanomorphology and fire behavior of polystyrene/organoclay nanocomposites containing brominated epoxy and antimony oxide
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