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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
Propargyl-PEG4-(CH2)3-methyl ester
Product Info
Document
Product Info
Propargyl-PEG4-(CH2)3-methyl ester consists of a propargyl group and a methyl ester. The propargyl group reacts with azide-bearing compounds or biomolecules in copper catalyzed Click Chemistry reactions to form a stable triazole linkage. Under strong basic condition, methyl ester can be hydrolyzed. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Document
Propargyl-PEG4-(CH2)3-methyl ester consists of a propargyl group and a methyl ester. The propargyl group reacts with azide-bearing compounds or biomolecules in copper catalyzed Click Chemistry reactions to form a stable triazole linkage. Under strong basic condition, methyl ester can be hydrolyzed. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Thymidylate Synthase (TS) is a crucial enzyme responsible for the synthesis of 2′-deoxythymidine-5′-monophosphate (dTMP) a precursor for thymidylate which is necessary for DNA replication and repair from 2′-deoxyuridine-5′-monophosphate (dUMP). In terms of cancer, TS is an important target for cancer treatment as the inhibition of TS and therefore nucleotide synthesis necessary for cell growth has shown to be a vital part for successful treatment against colorectal, pancreatic and breast cancers.
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
Features
Specifications
Main Functions
Isolation up to 20µg plasmid DNA from 1.5ml bacterial culture using 96 well bind plate and 96 filterplate
Applications
Enzyme digestion, sequencing, PCR, labeling, etc.
Purification method
96 well plate
Purification technology
Silica technology
Process method
Manual (centrifugation or vacuum)
Sample type
Conventional plasmid, plasmid less than 30KB
Sample amount
1-1.5ml(x96)
Yield
1-15µg/1ml
Elution volume
≥70μl
Time per run
≤60 minutes
Liquid carrying volume per column
800µl
Binding yield of column
70µg
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
Contents
P100601
P100602
P100603
Purification Times
1 x 96 Preps
4 x 96 Preps
20 x 96 Preps
RNase A
5 mg
20 mg
100 mg
Buffer P1
30 ml
120 ml
600 ml
Buffer P2
30 ml
120 ml
600 ml
Buffer P3
40 ml
180 ml
800 ml
Buffer PW1
100 ml
500 ml
2 x 1000 ml
Buffer PW2
50 ml
2 x 100 ml
4 x 200 ml
Elution Buffer
150 ml
60 ml
300 ml
Lysate Clear Plate
1
4
20
HiPure DNA Plate
1
4
20
1.6 ml Collection Plate
1
4
20
0.5ml Elute Plate
1
4
20
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.
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.