Probe compound for detecting and isolating enzymes and means and methods using the same
申请人:Helmholtz-Zentrum für Infektionsforschung GmbH
公开号:EP2230312A1
公开(公告)日:2010-09-22
The present invention relates to a probe compound that can comprise any substrate or metabolite of an enzymatic reaction in addition to an indicator component, such as, for example, a fluorescence dye, or the like. Moreover, the present invention relates to means for detecting enzymes in form of an array, which comprises any number of probe compounds of the invention which each comprise a different metabolite of interconnected metabolites representing the central pathways in all forms of life. Moreover, the present invention relates to a method for detecting enzymes involving the application of cell extracts or the like to the array of the invention which leads to reproducible enzymatic reactions with the substrates. These specific enzymatic reactions trigger the indicator (e.g. a fluorescence signal) and bind the enzymes to the respective cognate substrates. Moreover, the invention relates to means for isolating enzymes in form of nanoparticles coated with the probe compound of the invention. The immobilisation of the cognate substrates or metabolites on the surface of nanoparticles by means of the probe compounds allows capturing and isolating the respective enzyme, e.g. for subsequent sequencing.
One-Pot Synthesis of Furans from Various Saccharides Using a Combination of Solid Acid and Base Catalysts
作者:Jaya Tuteja、Shun Nishimura、Kohki Ebitani
DOI:10.1246/bcsj.20110287
日期:2012.3.15
One-pot synthesis of furans from various saccharides such as arabinose, rhamnose, and lactose were performed over solid acid and base catalysts. The combination of Amberlyst-15 and hydrotalcite catalysts showed successful activity for corresponding furans formation such as 2-furaldehyde (furfural), 5-hydroxymethyl-2-furaldehyde (HMF), and 5-methyl-2-furaldehyde (MF) via one-pot synthesis including isomerization and dehydration reactions. Moreover, the acid–base pair catalysts were also found to display excellent activity for the transformation from mixed-sources of sugars to furans. It was indicated that the isomerization of saccharides and successive dehydration in the one-pot synthesis of furans will be a great approach in a biorefinery.