| Description | Product Descriptionalpha-L-fucoside fucohydrolase, alpha-L-fucosidase, alpha-(1-6) fucosidaseRemoves non-reducing, terminal branched fucose when linked alpha-(1-6) to the core GlcNAc of a GlcNAc-GlcNAc disaccharide structure that has been labeled with a fluorescent molecule. To date, the fluorescentProduct Descriptionalpha-L-fucoside fucohydrolase, alpha-L-fucosidase, alpha-(1-6) fucosidaseRemoves non-reducing, terminal branched fucose when linked alpha-(1-6) to the core GlcNAc of a GlcNAc-GlcNAc disaccharide structure that has been labeled with a fluorescent molecule. To date, the fluorescent labels ANTS, ANDSA and 2-AA have been demonstrated to function with the fucosidase.There is no cleavage of unlabeled oligosaccharides.The one exception is that a terminal unbranched α(1-3) or α(1-4) fucose is cleaved in the absence of any reporter molecule.α(1-6) Fucosidase is useful for determining core fucosylation.ContentsAlpha-(1-6) fucosidase in 20 mM Tris-HCl, 25 mM NaCl,(pH 7.5).Included with 20 µL and 60 µL pack sizes:200 µl 5x Reaction Buffer 5.0 (250 mM sodium phosphate, pH 5.0)Molecular weight~55,000 daltonsFormulationThe enzyme is provided as a sterile-filtered solution in 20 mM Tris-HCl, 25 mM NaCl pH 7.5.Suggested usage1. Add up to 1 nmole of labeled oligosaccharide to a tube.2. Add de-ionized water to a total of 15 µl.3. Add 4 µl of 5x Reaction Buffer 5.0.4. Add 1 µl of Alpha-(1-6)-Fucosidase.5. Incubate for 3 hours at 37˚C.Specificityα(1-6) linked core fucose when covalently attached to a reporter molecule at the reducing terminal GlcNAc. The one exception is that a terminal unbranched α(1-3) ) or α(1-4) fucose is cleaved in the absence of any reporter molecule. Reporter molecules known to support cleavage are amino-napthalene disulfonic and tri- sulfonic acids and 2-aminobenzoic acid(2AA). However, 2-aminobenzamide(2-AB)will not support cleavage. Shorter oligosaccharides such as trimannosylchitobiose are more completely digested than longer derivatives which may require longer incubation times.Specific Activity AssayOne unit of Fucosidase activity is defined as the amount of enzyme required to cleave 1 µmole of fucose from 4-methylumbelliferyl-alpha-L-fucoside in 1 minute at 37˚C and pH 5.0.PurityEach lot of α(1-6) Fucosidase is tested for contaminating protease as follows: 10µg of denatured BSA is incubated for 24 hours with 2 µL of enzyme. Analysis of the BSA band after SDS-PAGE should show no evidence of degradation.The production host strain has been extensively tested and does not produce any detectable glycosidases.Stability Stable at least 12 months when stored properly. Several days exposure to ambient temperatures will not reduce activity... Read More | Inquire | Inquire | Inquire | EPOCROSTM is a reactive polymer with an oxazoline group on the side chain and is used as a cross-linking agent for water-based resins. Among the water-based polymers developed to address environmental issues and the increasing use of water-based products due to VOC regulations and desolventing, the EPOCROSTM is a reactive polymer with an oxazoline group on the side chain and is used as a cross-linking agent for water-based resins. Among the water-based polymers developed to address environmental issues and the increasing use of water-based products due to VOC regulations and desolventing, the EPOCROSTM WS series is a “water-soluble type” with the following structure.Features and PropertiesHigher reactivity than water-based epoxy, melamine, blocked isocyanateVOC free (EPOCROS™ WS-300 and EPOCROS™ WS-700)High crosslinking density with a small amount addedOne-pack type with long usage timeImproves water resistance, solvent resistance, heat resistance, and the strength of films, etc.Adhesion-imparting possible to PET, OPP, PVC, etc.Fast dryingLow toxicity (Ames Test: Negative, Primary Skin Irritation Test: No irritation)WS Series Product LineupApplicationsNonwoven fabric bindersPigment printingCoatings (metals, films, leather)Paint and coatings, Primers (plastics, building materials, vehicles)AdhesivesMethodASSAY for Product Code DILW:One unit equals a decrease in absorbance of 1.0 per minute at 25°C at pH 7.5 with 2,6-dichlorophenolindophenol as the chromogen.Reagents0.2 M Tris⋅HCl buffer, pH 7.50.006 M NADH. Prepare fresh daily.0.0012 M Dichlorophenolindophenol (DCPIP) Prepare fresh daily.EnzymePrepare a 10 mg/ml solution of enzyme in 0.2 M Tris⋅HCl, pH 7.5.Dilute further immediately before use to give ΔA/min of 0.15-0.20.ProcedureAdjust spectrophotometer to 600 nm and 25°C.Pipette into cuvettes as follows:Mix quickly and measure the decrease in absorbance at 600 nm for 2-3 minutes.Determine the ΔA/min. from the initial linear portion of the curve. (Use portion of curve from t=0 to t=1 minute; the rate is linear for 1/2 to 1 minute.)Calculation... Read More |