For rapid, sensitive and accurate screening of potential Tyrosinase inhibitors
Tyrosinase (EC 1.14.18.1) is a copper-binding enzyme that is expressed across a vast range of species ranging from bacteria and fungi to mammals. It is involved in two sequential reactions of the melanin synthesis pathway: first being the hydroxylation of a monophenol and second the conversion of an ortho-diphenol to a quinone. Quinone then undergoes a series of reactions including polymerization to form melanin.
Tyrosinase is of great interest to the agriculture industry since it causes browning of fruits, vegetable, and mushrooms, as well as to the cosmetic industry as it causes skin darkening. Development and screening of tyrosinase inhibitors, therefore, is very useful for conditions such as hyperpigmentation and melasma. Tyrosinase activity is significantly increased in melanoma. Therefore, the detection of tyrosinase activity could be promising as a specific diagnostic test for melanoma and may be useful in monitoring patient response to melanoma treatments.
This Tyrosinase Activity Assay Kit is a simple one-step, plate-based assay for the measurement of tyrosinase activity in biological samples. In this assay, tyrosinase catalyzes the conversion of a phenolic substrate to a Quinone intermediate, which reacts with the tyrosine enhancer forming a highly stable chromophore with absorbance at 520 nm. The assay can detect as low as 30 μU Tyrosinase in biological samples.
Other Products
E.coli O157:H7 TaqMan PCR Detection Kits
Product Info
Document
Product Info
Overview
Detection kits for E.coli O157:H7
Available in TaqMan format for analysis
E. coli O157:H7 is a rod-shaped, gram negative bacterium. It is an enterohemorrhagic strain of the common E. coli bacterium and infection by the O157:H7 strain is commonly associated with hemorrhagic colitis. E. coli O157:H7 is recognized by its somatic (cell wall) antigen (O157) and its flagella antigen (H7). In addition, E. coli O157:H7 is known to produce Shiga-like toxins, which cause severe symptoms. While most patients can recover from the infection, up to 15% of the patients may develop hemolytic uremic syndrome, a type of kidney failure that could be fatal. Infection of E. coli O157:H7 usually results from consumption of poorly prepared food including undercooked meat (particularly ground beef), untreated water or raw unpasteurized milk.
E.coli O157:H7 TaqMan PCR Kit, 100 reactions
Ready to use format, including Master Mix for the target and PCR control to monitor for PCR inhibition and validate the quality
Specific Primer and Probe mix for the pathogen/virus/viroid of interest
Primer and Probe mix
Positive and negative control to confirm the integrity of the kit reagents
E.coli O157:H7 TaqMan PCR Probe/Primer Set and Controls, 100 reactions
Specific Primer/Probe mix and Positive Control for the pathogen/virus/viroid of interest
Nuclease-free water
Can be used together with Norgen’s PCR Master Mix (#28007) or customer supplied master mix
For research use only and NOT intended for in vitro diagnostics.
Storage Conditions and Product Stability All kit components can be stored for 2 years after the date of production without showing any reduction in performance.
All kit components should be stored at -20°C upon arrival.
A highly efficient, easily automated PCR purification system that delivers superior quality DNA with no salt carryover. Requiring no centrifugation or filtration. This kit can be easily used in manual and automated 96 or 384-well formats.
Details
Specifications
Features
Specifications
Main Functions
Recover 100-400μl DNA/ RNA from PCR products / enzymatic reaction solution / or crude DNA / RNA
Applications
Automatic sequencing, enzyme digestion, PCR and labeling
The MagPure method contains magnetic particles in an optimized binding buffer to selectively bind DNA fragments 100bp and larger toparamagnetic beads. Excess primers, nucleotides, salts, and enzymes can be removed using a simple washing procedure.
Advantages
High recovery efficiency – up to 80% DNA recovery
Kit Contents
Contents
D500301
D500302
D500303
Purification Times
50 Preps
500 Preps
5000 Preps
Buffer AL
10 ml
60 ml
550 ml
Buffer BD*
5 ml
25 ml
2 x 100 ml
MagPure RNA Particles
1.2 ml
12 ml
120 ml
RNase Free Water
5 ml
30 ml
250 ml
Storage and Stability
MagPure RNA Particles should be stored at 2-8°C upon arrival. However, short-term storage (up to 12 weeks) at room temperature (15-25°C) does not affect its performance. The remaining kit components can be stored dry at room temperature (15-25°C) and are stable for at least 18 months under these conditions. The entire kit can be stored at 2-8°C, but in this case buffers should be redissolved before use. Make sure that all buffers are at room temperature when used.
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A highly efficient, easily automated PCR purification system that delivers superior quality DNA with no salt carryover. Requiring no centrifugation or filtration. This kit can be easily used in manual and automated 96 or 384-well formats.
Magen’s HiPure columns are prepared by high quality glass fiber filter membrane as raw materials through membrane cutting, membrane release, ring release, ring pressing, gland, weighing and other processes. HiPure nucleic acid adsorption columns have the characteristics of long-term stability and high binding capacity. Experiments show that the highest binding capacity and binding efficiency of HiPure nucleic acid adsorption columns are basically unchanged when stored at room temperature for 4 years.
The series of nucleic acid columns produced by Magen Biotech are based on carefully selected imported glass fiber membranes (GF/B, GF/D, GF/F). Columns production processes such as polypropylene injection molding materials, injection molding process, and downstream membrane packing and compression rings are strictly controlled. This is to ensure that the column has extremely high adsorption capacity and long-term stability. Compared with conventional products on the market, Magen’s columns are with varieties, and binding rate will not change when stored at room temperature for 4 years.
C13114 HiPure cfDNA Mini Column Set I (Centrifuge Method)
C13115 HiPure cfDNA Column Set Ⅱ (Vacuum Method)
Details
Specifications
Features
Specifications
Recommended application
Circulating or viral nucleic acid isolation from large volumes of cell free samples (1-5ml)
Preservation conditions
Room temperature
Stability
Up to 4 years
Filter membrane
High quality glass fiber filter GF/F, 4 layers (3 x GF/F, 1 x GF/B)
Membrane aperture
3 x 0.7μm, 1 x 1.0μm
Maximum binding yield of plasmid
30 μg
Maximum yield of alcohol mediated Binding
200 μg
Single liquid carrying capacity of column
800 μl
Minimum elution volume
30 μl
Withstand centrifugal force
16,000 x g
Centrifuge
Small high speed centrifuge (2ml)
Adsorption Mechanism
Based on the negatively charged DNA skeleton, it has a high affinity for positively charged glass fibers. In high salt and ethanol solutions, DNA/RNA binds to glass fiber and interacts with hydrophilic matrix on silica through hydrogen bond. DNA/RNA is tightly bound. All pollutants can be removed by washing solution. At high salt concentration, nucleic acids selectively bind to silica gel membrane, while other pollutants, mainly proteins, are removed by membrane washing.
Ordering information
CAT.No.
Product Name
Package
C13113
HiPure cfDNA Mini Column (3 x GF/F, 1 x GF/B)
100/Bag
C13114
HiPure cfDNA Mini Column (3 x GF/F, 1 x GF/B)with 50ml Centrifuge Tube, Extender Tube, Collection Tube, Collection Tube Ⅲ
100/Pack
C13115
HiPure cfDNA Mini Column (3 x GF/F, 1 x GF/B)with Collection Tubes, Extender Tube, Vac-Connector
100/Pack
C13301
Vac connector
100/Bag
C13302
Extender Tube
50/Bag
Purchase Guide
Item No.
Product Name
Membrane type/number of layers
Collection tubes
Plasmid DNA binding capacity (Physical adsorption)
Note: GF/B pore size is for 1.0μM glass fiber membrane; GF/F pore size is for 0.7μm glass fiber membrane.
Document
Magen’s HiPure columns are prepared by high quality glass fiber filter membrane as raw materials through membrane cutting, membrane release, ring release, ring pressing, gland, weighing and other processes. HiPure nucleic acid adsorption columns have the characteristics of long-term stability and high binding capacity. Experiments show that the highest binding capacity and binding efficiency of HiPure nucleic acid adsorption columns are basically unchanged when stored at room temperature for 4 years.