摘要:
Provided herein are bitter taste receptor ligands, related agents, combinations, compositions, methods and systems for modulating release of a metabolic hormone in vitro or in vivo from cells of the GI tract of an individual.
摘要:
Single component metallocene catalysts for α-olefin polymerization are disclosed. Prior art cation metallocene catalysts have required a separate anion co-catalyst like methyl aluminoxane (MAO). However, because the inventive zwitterion ansa metallocene (ZAM) catalysts have a 'built-in' anion co-catalyst functionality, the need for a separate anion co-catalyst is eliminated.
摘要:
Computer-implemented methods and apparatus implement a hierarchy of molecular modeling techniques for predicting binding sites of ligands in proteins, designing new pharmaceuticals and understanding the interactions of proteins involved in microbial pathogens. The techniques employ a hierarchical strategy ranging from coarse grain to fine grain conformational search methods combined with hierarchical levels of accuracy in scoring functions.
摘要:
The Generic Protein method is a computer-implemented system for determining the three-dimensional structure of a protein from its amino acid sequence. The method incorporates a hierarchical approach wherein the number of candidate structures decreases at each step. The starting point is the use of a sequence independent ensemble of compact structures which represents an exhaustive enumeration of all possible self-avoiding folded topologies for a n residue polypeptide. Because the number of candidate conformations is dramatically reduced, recognition filters such as radius of gyration, distribution of hydrophobic residues, and the satisfaction of disulfide constraints can be used to further reduce the number of candidate conformations. The complexity of the initial ab initio structure prediction problem can be reduced to a complexity on the order of a homology modeling exercise. The final refinement step may involve molecular mechanics procedures with explicit solvation parameters on full-atom representations of the remaining candidate structures.