摘要:
Two-dimensional and three-dimensional arrays of a polydiacetylene backbone having a substrate incorporated are used in chemical sensing methods to detect the interaction of an analyte with the substrate by monitoring the change in the fluorescence of the array.
摘要:
A method for identifying active site inhibitors of scission enzyme that cleaves the backbones or side groups of peptides, and for using the resultant inactivators to inhibit the target scission enzyme. Kinetic assays are employed to identify peptide substrates that tightly bind to the active site of the target protease but that are not easily cleaved. These noncleavable but tightly binding substrates are optionally structurally modified to yield inhibitory compounds with optimized properties. Additionally these substrates exhibit apparent specificity for a transition state or ground state configuration of the protease.
摘要:
This invention relates to the inhibition of histone deacetylase expression and enzymatic activity. The invention provides methods and reagents for inhibiting specific histone deacetylase (HDAC) isoforms by inhibiting expression at the nucleic acid level or enzymatic activity at the protein level.
摘要:
A sensor for detecting an analyte in an environment includes a first reaction system including a first enzyme and a substrate for the first enzyme. The analyte inhibits the reaction of the substrate catalyzed by the first enzyme. The sensor further includes at least a second reaction system that reacts to produce a first detectable state when the first enzyme is inhibited. In some embodiments, the reaction of the first reaction system can produce a second detectible state, different from the first detectible state. Another sensor for detecting an analyte in an environment includes a first reaction system including a first enzyme or a first substrate for the first enzyme. In this embodiment, the analyte is either a substrate for the first enzyme or the first enzyme if the first reaction system includes the first substrate. Figure (1) illustrates reaction schematics of one embodiment of a sensor of the present invention for detecting nerve agents.
摘要:
A method for identifying active site inhibitors of scission enzyme that cleaves the backbones or side groups of peptides, and for using the resultant inactivators to inhibit the target scission enzyme. Kinetic assays are employed to identify peptide substrates that tightly bind to the active site of the target protease but that are not easily cleaved. These noncleavable but tightly binding substrates are optionally structurally modified to yield inhibitory compounds with optimized properties. Additionally these substrates exhibit apparent specificity for a transition state or ground state configuration of the protease.
摘要:
A diagnostic agent for colon cancer, which comprises a reagent for detecting a tannase high-producing bacterium or measuring an amount of tannase contained in an intracolonic microflora sample, and a test method for colon cancer, which comprises the step of detecting a tannase high-producing bacterium or measuring an amount of tannase contained in an intracolonic microflora sample.
摘要:
Systems, including compositions and methods, for measuring pH, particularly in cells, organelles, and other samples. The compositions include pH-sensitive fluorescent and fluorogenic 2',7'-dialkylfluorescein derivatives and associated nonfluorescent precursor compounds of the formula shown below. The compositions may permit ratiometric measurement in the excitation spectrum and the emission spectrum. The methods include adding a precursor compound to a sample cell, incubating the sample cell to release the free indicator, illuminating the sample cell, and detecting the fluorescence response of the free indicator.
摘要:
PDE7a3 polypeptides and polynucleotides and methods for producing such polypeptides by recombinant techniques are disclosed. Also disclosed are method for utilizing PDE7a3 polypeptides and polynucleotides in diagnostic assays.
摘要:
This invention relates to newly identified polypeptides and polynucleotides encoding such polypeptides sometimes hereinafter referred to as 'novel phosphodiesterase type 7b (PDE7b)', to their use in diagnostic and in identifying compounds that may be agonists, antagonists that are potentially useful in therapy, and to production of such polypeptides and polynucleotides.