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Tyrosinase Activity Assay Kit

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Highly reproducibility
Highly Sensitive Assay to Screen for Tyrosinase Activity
Stable formulation of ready to use Reaction Facilitator (tyrosinase)

Detail

Description

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.

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Description

Specifications

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P1006 HiPure Plasmid Plus 96 Kit

Introduction

The HiPure Plasmid DNA Plus 96 Kit enables up to 96 minipreps to be performed simultaneously in less than 45 minutes on the Vacuum Manifold (Qiavac 96). This kit provides a fast, simple,and cost-effective plasmid DNA high-throughput method for routine molecular biology laboratory applications. HiPure Kits use silica membrane technology to eliminate the cumbersome steps associated with loose resins or slurries.Plasmid DNA purified with Kits is immediately ready for use. Phenol extraction and ethanol precipitation are not required, and high quality plasmid DNA is eluted in a small volume of Tris buffer or water.

Details

Specifications

FeaturesSpecifications
Main FunctionsIsolation up to 20µg plasmid DNA from 1.5ml bacterial culture using 96 well bind plate and 96 filterplate
ApplicationsEnzyme digestion, sequencing, PCR, labeling, etc.
Purification method96 well plate
Purification technologySilica technology
Process methodManual (centrifugation or vacuum)
Sample typeConventional plasmid, plasmid less than 30KB
Sample amount1-1.5ml(x96)
Yield1-15µg/1ml
Elution volume≥70μl
Time per run≤60 minutes
Liquid carrying volume per column800µl
Binding yield of column70µg


Principle

The HiPure Plasmid procedure is based on alkaline lysis of bacterial cells followed by adsorption of DNA onto silica in the presence of high salt. The unique silica membrane used in the kit completely replaces glass or silica slurries for plasmid DNA minipreps. The procedure consists of 3 basic steps: Preparation and clearing of a bacterial lysate by alkaline method,then transfer the supernatant to column to bind DNA. After washing proteins and other impurities, nucleic acid was finally eluted with low-salt buffer (10mm Tris, pH9.0, 0.5mm EDTA).

Advantages

  • High purity – purified plasmid can be directly used in sequencing, enzyme digestion and PCR, etc.
  • Fast – it takes only 60 minutes to complete the isolation
  • High yield – up to 1mg plasmid can be binded in one column
  • Economy – high cost performance

Kit Contents

ContentsP100601P100602P100603
Purification Times1 x 96 Preps4 x 96 Preps20 x 96 Preps
RNase A5 mg20 mg100 mg
Buffer P130 ml120 ml600 ml
Buffer P230 ml120 ml600 ml
Buffer P340 ml180 ml800 ml
Buffer PW1100 ml500 ml2 x 1000 ml
Buffer PW250 ml2 x 100 ml4 x 200 ml
Elution Buffer150 ml60 ml300 ml
Lysate Clear Plate1420
HiPure DNA Plate1420
1.6 ml Collection Plate1420
0.5ml Elute Plate1420

Storage and Stability

The kit components can be stored dry at room temperature (15-25°C) and are stable for at least 18 months under these conditions. If any precipitates form in the buffers, warm at 37℃ to dissolve. After addition of RNase A,Buffer P1 is stable for 6 months when stored at 2-8°C.

Purchase Guide

NameCAT NOFeaturesSampleamountElutionvolumeYield
HiPure Plasmid Mini KitP1001Classic, Regular application1-5ml LB30-50μl5–35µg/5ml
HiPure Plasmid Mini Kit IIP1002Classic, Regular application5-15ml LB75-100μl20-80µg/15ml
HiPure Plasmid Plus 96 KitP1006Classic, Regular application1-1.5ml LB70-150μl1-15μg/1ml
HiPure Fastfilter Plasmid Midi KitP1013Fast30-50ml LB0.3-0.8ml50–250µg/50ml
HiPure Fastfilter Plasmid Maxi KitP1014Fast100-200ml LB0.5-1.5ml0.4–1mg/200ml
Low endotoxin/Endotoxin-free Plasmid
HiPure Plasmid EF Maxi KitP1156Classic method, General for all kinds of vectors100-200ml LB≥0.7ml200–1500µg
HiPure Plasmid EF Mini KitP1154Recommend for low copy vector, Thoroughly remove RNA5-15ml LB≥60μl10–80µg
HiPure Plasmid EF 96 KitP1157Recommend for low copy vector, Thoroughly remove RNA1-5ml LBx96≥75μl30µg
HiPure Plasmid EF Midi KitP1231Recommend for High copy vector, Low elution volume, High concentration25-50ml LB≥100μl10-500μg
HiPure Plasmid EF Mega KitP1116Recommend for High copy vector(>3μg/ml)500ml LB≥2ml1-10mg

For any technical problems or customized products, please contact us.

F&Q about Endotoxin-free Plasmid Extraction Kit — P1156 ←click here