

Western blotting, also known as Western Blot (WB), is a comprehensive immunological detection technique. The protein molecules in the biological samples were separated on the gel according to their molecular weights by SDS-PAGE technology. Then, the proteins were transferred to the solid-phase membrane by electrotransfer. The proteins on the solid-phase membrane were used as antigens to have an immune reaction with the corresponding antibodies, and then reacted with the enzyme-labeled secondary antibodies. Proteins expressing specific target genes separated by electrophoresis are detected through methods such as substrate coloration or fluorescence imaging. This technology has been widely applied in multiple aspects such as the study of gene expression at the protein level, antibody activity detection, and early diagnosis of diseases.



1.
Maximize the signal strength ★
2.
Minimize background intensity to the greatest extent ★
3.
Maximize the saving of experimental time ★



01
Cracking module
WB
RIPA Lysis Buffer (Strong, Medium and Weak)
RIPA(Radio Immunoprecipitation Assay) Lysis Buffer is a traditional rapid lysis buffer for cells and tissues, mainly used for extracting soluble proteins from animal cells and tissues. The protein samples obtained from its lysis can be used in conventional experiments such as Western Blot, IP and Elisa.
There are many formulations for RIPA lysis buffer, which can be roughly classified into strong, medium and weak categories based on their lysis strength.

Lysate selection diagram
Protease and Phosphatase Inhibitor Cocktail
Samples such as cell or tissue extracts contain many endogenous proteases, phosphatases, etc., which can easily lead to protein degradation or demodification in the extracts, thereby affecting subsequent protein detection. Therefore, adding appropriate inhibitors of proteases, phosphatases, etc. to extracts and other samples is an effective method to prevent protein degradation and demodification.
The core components of Baorui Biological protease and phosphatase inhibitors are as follows:


02
Protein quantificationModule
WB
BradfordProtein Assay Kit
The Bradford protein concentration determination method is one of the commonly used and highly sensitive protein concentration determination methods at present.
The principle is that Coomassie Brilliant Blue G-250 combines with the basic and aromatic amino acids of proteins to form a blue compound. The maximum absorbance wavelength of this substance is 595 nm. The absorbance value has a good linear relationship with the protein content within a certain concentration range. By measuring the absorbance value and comparing it with the absorbance value of standard proteins, the protein concentration can be calculated So as to achieve rapid determination of protein concentration.
1.
High sensitivity ★
This product has been improved on the traditional Bradford method, with an optimal protein content detection range of 100 to 500 μg/mL and high sensitivity.
2.
The detergent has high tolerance. ★
It can withstand various commonly used detergents such as NP-40, Triton X-100, Brij35 and Tween 20。
3.
Convenient and fast ★
The kit is equipped with a series of gradient concentration protein standard solutions (BSA solutions), which are ready to use immediately without dilution, making it convenient and fast.
BCA Protein Quantification Kit
This kit is based on the principle that protein molecules can dissolve Cu in alkaline solutions2 +Restore to Cu+2,2 '-biquinoline-4,4' -dicarboxylic acid (BCA) and Cu+The combination forms a purple complex. Within a certain range, the depth of its color is directly proportional to the protein concentration. The protein standard solution is used as the standard curve, and the protein content in the test sample is determined by colorimetry.
1.
The linear relationship of the standard product is stable ★
Linear fitting equation R of the standard substance2≥0.99。
2.
High precision ★
The RSD% of the duplicate Wells for standard substances and test samples shall be ≤10%.
3.
High accuracy ★
The detection error of the enterprise's self-made internal control products is no more than 10%.
03
Protein electrophoresisModule
WB
Tris-Glycine-SDS Running Buffer
Tris-Glycine-SDS Running Buffer is commonly used as the electrophoresis buffer for protein SDS-PAGE. This buffer solution is a 10-fold concentrated solution. Before use, it only needs to be diluted to 1× working solution with deionized water.
1.
Simple operation ★
It can be directly diluted to 1× with distilled water or deionized water for use.
2.
Wide range of applications ★
Commonly used protein electrophoresis buffer: Suitable for the Tris-glycine system.
5×SDS-PAGE Protein Loading Buffer
This product is a denatured reduced protein loading buffer。
1.
Inhibit degradation ★
A new formula is adopted to ensure that the pH value of the sample is neutral after boiling, avoiding protein degradation.
2.
Odorless ★
By adopting a new type of reducing agent, the strong reducing property is guaranteed while avoiding the odor of β -mercaptoethanol or DTT.
3.
Rapid settlement ★
The sample will quickly sink to the bottom of the sample loading hole and is not likely to float up.
4.
"Quick Melt ★
After being taken out at -20℃, it melts quickly, is not sticky, and saves waiting time.
One-Step PAGE Gel Fast Preparation Kit
This product is suitable for the TrIS-glycine electrophoresis system. It adopts a premixed formula of upper and lower layers of gel. Just add the improved coagulant and it will gel, which is simple and fast. The upper layer of tape provided is blue/red, and the sampling holes are clear and easily distinguishable, making it convenient for sampling. Blue/red concentrated gels can be used to distinguish gels containing different samples. This product comes with an improved accelerator, which has better stability and catalytic efficiency. No additional TEMED needs to be added during the glue mixing process.

1.
One-step potting ★
After filling the lower layer of glue, the upper layer of glue can be directly injected without a liquid seal.
2.
Simple and fast operation ★
There is no need to calculate the required amount of solution or dilute it.
3.
Colored upper layer glue ★
It can prepare the upper layer gel in red and blue colors, providing convenience for sampling and distinguishing different gels.
4.
Avoid unpleasant odors ★
No need to use TEMED, avoiding foul odors.
5.
Clear bands ★
Especially, the bands of small molecule proteins are clearer than those in traditional gels.
6.
No special electrophoresis solution required ★
Match the traditional Tris-Gly electrophoresis buffer.

04
Pre-stained protein MarkerModule
WB
180 kDa Prestained Protein Marker
The 180 kDa Prestained Protein Marker is composed of 10 proteins of different molecular weights pre-stained in three colors, with molecular weights ranging from 13 to 180 kDa. Among them, 75 kDa is an orange-red band, 13 kDa, 17 kDa, 36 kDa, 45 kDa, 60 kDa, 100 kDa, 140 kDa and 180 kDa are blue bands, and 25 kDa is a green band. This product is used in SDS-PAGE experiments, which can clearly indicate the electrophoresis process and accurately determine the molecular weight of the target protein. In Western blot experiments, it can be used to monitor the transfer effect of PVDF membranes or NC membranes and determine the detection status of target proteins. This product can be applied to different buffer systems of Tris-Glycine and Bis-Tris gels (Tris-Glycine, MOPS and MES). The protein bands of this product have all been calibrated by non-pre-stained protein markers, and the band sizes are accurate.
1.
Colorful strips make it easy to determine the exact position of each strip。
2.
It can clearly indicate the electrophoresis process。
3.
Used for detecting the transfer efficiency of WB experiments.

05
Transfer and incubationModule
WB
10× Fast Transfer Buffer
The 10× Fast Transfer Buffer is a highly efficient, safe and non-toxic rapid transfer buffer specially designed for Western Blot wet rapid transfer. This product is a 10 times concentrated buffer and needs to be diluted to a 1× concentration with an appropriate amount of deionized water and ethanol before use.
1.
Safe and environmentally friendly ★
This product contains no toxic components. During the preparation process, anhydrous ethanol can be used instead of methanol, avoiding the use of highly toxic reagents such as methanol, making the operation safer and more environmentally friendly.
2.
Efficient and convenient ★
This product is highly efficient and convenient to use. Western Blot wet transfer can be completed within 20 to 40 minutes, and it generates little heat during the transfer process. An internal ice box is sufficient for transfer, eliminating the need for an external ice bath.
3.
Good compatibility ★
It is also applicable to proteins with a wide molecular weight range, effectively solving the problem that large and small proteins cannot be transferred simultaneously on the same membrane. It is compatible with various gels such as the Tris-Gly system, Hepes system, and Bis-Tris system.

0.45 μm /0.22 μm PVDF Membrane
PVDF membrane, namely polyvinylidene fluoride membrane, is a solid-phase support widely used in Western blotting. This membrane is hydrophobic, and its pore sizes vary. As the pore sizes gradually decrease, its binding ability to low-molecular-weight proteins becomes increasingly firm。
1.
Low background, high sensitivity.
2.
High chemical compatibility.
3.
High permeability resistance to gases and liquids.
4.
Good heat resistance stability.
0.45 μm /0.22 μm NC Membrane
NC Membrane, also known as nitrocellulose membrane, is the most commonly used blotting membrane for protein and nucleic acid hybridization. The NC membrane is hydrophilic and does not need to be activated in methanol or ethanol. It only requires simple wetting in water during transfer. Its uniform pore structure can bind biomolecules and is mainly used in Western blot to transfer proteins from various gel matrices to membranes。
1.
No methanol activation is required.
2.
The protein has a strong binding ability.
3.
Reduce non-specific binding, lower the hybridization background, and eliminate the need for highly rigorous elution steps.
4.
High cost performance.
10×TBST Buffer
10×TBST Buffer is a widely used isotropic buffer salt solution in biological experiments. It is mainly used in Western Blot experiments to wash away non-specifically bound antibodies and other reagents on the membrane, thereby reducing the background and enhancing the signal-to-noise ratio.
This product is suitable for Immunofluorescence (IF), Immunohistochemistry (IHC) and Immunocytochemistry. In experiments such as IC), the preparation of blocking solutions, the dilution of primary or secondary antibodies, and the washing after incubation。
1.
To lower the background and enhance the signal-to-noise ratio.
2.
Applicable to all antibody dilutions (IF, IHC, IC, ELISA, WB).
3.
It does not contain BSA, skimmed milk powder or other animal-derived proteins.
06
Color renderingModule
WB
DAB Peroxidase Substrate Kit
DAB Peroxidase Substrate Kit is a HRP-DAB substrate chromogenic reagent kit product developed by Baorui Biotechnology.
This product contains all the reagents for detecting horseradish peroxidase (HRP). Staining of PVDF membranes and NC membranes suitable for Western Blot hybridization. DAB (3, 3’n-diaminobenzidine Tertrahydrochloride) is a commonly used substrate for horseradish peroxidase (HRP). Under the catalysis of horseradish peroxidase, DAB will produce a brown precipitate that is insoluble in water and ethanol. HRP fixed by immune reaction can catalyze the transformation of the substrate DAB at the location of the target protein into a brown compound. The location and expression of the target protein can be determined based on the color reaction。
1.
Simplified components and simple operation ★
The Baorui Biotechnology DAB Peroxidase Substrate Kit consists of two components, DAB-A and DAB B-. The components are simplified and the operation is simple.

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