Description

For rapid, sensitive and accurate screening of potential Tyrosinase inhibitors

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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.

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

Introduction

Usages:
Soytone is an enzyme digest of soy, widely used in culture media.

Technical specification:
Total nitrogen(TN)—————————≥8.0%
Amino nitrogen(AN) ————————≥2.0%
Moisture—————————————≤6.0%
Ash———————————————≤12.5%

Storage: Keep container tightly closed, store in a cool, dry place, away from bright light.

Specifications: 500g/bottle; 10kg/bag

500g/bottle; 10kg/bag

Introduction

This Kit is designed to purify genomic DNA and total RNA simultaneously from a single biological sample. Lysate is first passed through a DNA spin column to selectively isolate DNA and then through an RNA column to selectively isolate RNA. Pure DNA and RNA are purified from the entire sample, in contrast to other procedures where either the biological sample or the purified total nucleic acids is divided into two before being processed separately. The kit is compatible with small amounts of a wide range of animal cells and tissues.

Details

Specifications

Features	Specifications
Main Functions	Co-isolation DNA and RNA(not include miRNA) from a single sample (cells, soft tissue, plant sample)
Applications	RT-PCR, cDNA synthesis, PCR andsecond-generation sequencing, etc.
Purification method	Mini spin column
Purification technology	Silica technology
Process method	Manual (centrifugation or vacuum)
Sample type	Soft tissue samples (viscera, excluding skin andmuscle), cultured cells and common plant tissues
Sample amount	Soft Tissue: < 30mg, Cell: <1 x 107, Plant: <100mg
Yield	DNA: 1 – 20 μg,  RNA: 3 – 100 μg

Principle

The Kits are designed to purify both genomic DNA and total RNA from the same cellor tissue sample. Samples are first lysed and homogenized. The lysate is passed through a DNA Mini column and bind DNA. Ethanol is added to the flow-through and the sample is applied to an RNA column. DNA/RNA binds to the membrane and contaminants are washed away. High-quality RNA is eluted in as little as 30µl water using the Kit. High-quality DNA is eluted in as little as 50µl water using the Kit.

Advantages

• High quality – high purity total RNA / DNA can be directly used in a variety of downstream applications
• Fast – column method can complete the extraction of several samples in 30 minutes
• Safe – no phenol chloroform extraction required
• Simultaneous extraction- simultaneously isolate DNA and RNA from one sample

Kit Contents

Contents	R511102	R511103
Purification Times	50 Preps	250 Preps
HiPure DNA Mini Columns	50	250
HiPure RNA Mini Columns	50	250
2ml Collection Tubes	100	2 x 250
Buffer RLC	50 ml	200 ml
Buffer DW1	30 ml	150 ml
Buffer RW1	30 ml	150 ml
Buffer RW2*	20 ml	2 x 50  ml
RNase Free Water	10 ml	30 ml
Buffer AE	10 ml	50 ml

Storage and Stability

HiPure DNA/RNA Kit can be stored dry at room temperature (15–25°C) and are stable for at least 18 months under these conditions.

This Kit is designed to purify genomic DNA and total RNA simultaneously from a single biological sample. Lysate is first passed through a DNA spin column to selectively isolate DNA and then through an RNA column to selectively isolate RNA. Pure DNA and RNA are purified from the entire sample, in contrast to other procedures where either the biological sample or the purified total nucleic acids is divided into two before being processed separately. The kit is compatible with small amounts of a wide range of animal cells and tissues.