GoldStar Probe Mixture - Low ROX, high purity

Item Number

G665760

• Specifications & Purity: Low ROX
• Storage Temp: Store at -20°C,Avoid repeated freezing and thawing
• Shipped In: Ice chest + Ice pads

Product Description

Product content

G665760	Component	5 mL	Storage
G665760A	2×GoldStar Probe Mixture	5×1 mL	-20℃. Avoid freeze/thaw cycle.
G665760B	50×Low ROX	200 μL	-20℃. Avoid freeze/thaw cycle.
G665760C	ddH₂O	5×1 mL	-20℃. Avoid freeze/thaw cycle.

Product Introduction

GoldStar Probe Mixture is a premixed system for real-time fluorescence quantitative PCR by probe method (TaqMan, Molecular Beacon, etc.), with a concentration of 2×, containing GoldStar Taq DNA Polymerase, PCR Buffer, dNTPs and Mg2+, which is easy and convenient to operate. It is mainly used for genomic DNA target sequence and RNA reverse transcription cDNA target sequence detection, such as gene expression analysis, copy number analysis, SNP genotype analysis, etc. It is suitable for fluorescence quantification by different types of probe methods. GoldStar Taq DNA Polymerase is a chemically modified, new and highly efficient hot-start enzyme, which has no polymerase activity at room temperature and effectively avoids non-specific amplification caused by non-specific binding of primers and templates or primer dimerization at room temperature, and the activation of the enzyme must be incubated at 95℃ for 10 minutes. The unique combination of PCR buffer system and hot-start enzyme significantly improves the amplification efficiency of PCR with stronger fluorescent signal and higher sensitivity to detect single-copy templates. A wider linear range and more accurate quantification of target genes can be obtained with this product. It is suitable for all fluorescent quantitative PCR instruments that do not require ROX as a calibration dye.

ROX dye is used to correct the fluorescence signal error generated between wells of a quantitative PCR instrument, and is generally used in Real Time PCR amplifiers from ABI, Stratagene, and others. The excitation optics vary from instrument to instrument, so the concentration of ROX dye must be matched to the corresponding fluorescence quantitative PCR instrument.

Instruments that do not require ROX calibration  (G665832) :

Roche LightCycler 480, Roche LightCyler 96, Bio-rad iCyler iQ, iQ5, CFX96 and others.

Instruments requiring Low ROX calibration  (G665832) :

ABI Prism7500/7500 Fast, QuantStudio®3 System, QuantStudio®5 System, QuantStudio®6 Flex System, QuantStudio®7 Flex System, ViiA7 system. Stratagene Mx3000/Mx3005P, Corbett Rotor Gene 3000, and more.

Instruments requiring High ROX calibration  (G665832) :

ABI Prism 7000/7300/7700/7900, Eppendorf, ABI Step One/Step One Plus, and others.

matters needing attention

1. Before use, please mix gently by turning up and down, avoid foaming as much as possible, and use after brief centrifugation.

2. Avoid repeated freezing and thawing of this product, repeated freezing and thawing may degrade the product performance. This product can be stored for long term at -20℃, protected from light. If frequent use is required within a short period of time, it can be stored at 2-8℃.

Usage

The following examples are conventional PCR reaction systems and reaction conditions, which should be improved and optimized according to the template, primer structure and target fragment size in actual operation.

1.PCR reaction system

reagents	50μl reaction system	final concentration
2×GoldStar Probe Mixture	25μl	1×
Forward Primer, 10µM	1μl	0.2μM¹⁾
Reverse Primer, 10µM	1μl	0.2μM¹⁾
Probe, 10µM	1μl	0.2μM²⁾
Template DNA	2μl³⁾
50xLow ROX or High ROX(optional)⁴⁾	1μl	1×
ddH₂O	Up to 50μl

Note: 1) Usually, the primer concentration of 0.2μM can get better results, and 0.1-1.0μM can be used as a reference for setting the range. 2) The concentration of the probe used is related to the fluorescent quantitative PCR instrument used, the type of probe, and the type of fluorescent labeling substance, so please refer to the instruction manual of the instrument or the specific requirements of the use of each fluorescent probe for the adjustment of the concentration during the actual use.

(3) Usually the amount of DNA template is 10-100ng genomic DNA or 1-10ng cDNA as a reference. Since the templates of different species contain different copy numbers of target genes, the templates can be subjected to gradient dilution to determine the optimal amount of template to be used.

(4) The excitation optical system varies from instrument to instrument, choose to add 50×Low ROX or 50×High ROX according to the instrument using fluorescence quantification.

2.PCR reaction program

Caution! The pre-denaturation reaction of this product must be completed at 95°C for 10 minutes!

Two-step PCR::

Note: 1) The hot start enzyme used in this product must be activated under the condition of pre-denaturation 95℃, 10min. 

2) It is recommended to use two-step PCR reaction program, if you can't get good experimental results due to the use of primers with lower Tm value, etc., you can try to carry out a three-step PCR amplification, and the annealing temperature should be set in the range of 56℃-64℃ as a reference.