| Description | This product is a premixed system composed of Pfu DNA Polymerase, Mg2+, dNTPs, PCR stabilizers and enhancers, with a concentration of 2 ×. Pfu DNA Polymerase exhibits 5 ′ -3 ′ DNA polymerase activity and 3 ′ -5 ′ exonuclease activity, thus possessing error correction This product is a premixed system composed of Pfu DNA Polymerase, Mg2+, dNTPs, PCR stabilizers and enhancers, with a concentration of 2 ×. Pfu DNA Polymerase exhibits 5 ′ -3 ′ DNA polymerase activity and 3 ′ -5 ′ exonuclease activity, thus possessing error correction ability during DNA amplification. Compared with Taq DNA Polymerase, it has high fidelity (6-8 times that of Taq enzyme) and better thermal stability. The pre prepared PCR mixture makes the operation simpler and faster, minimizing human error and contamination to the greatest extent possible. The original MasterMix formula makes the entire reaction system very stable and has good repeatability. This product has been added with a dye (blue), and can be directly subjected to electrophoresis detection after the reaction is completed. The Pfu DNA polymerase contained in this product has the characteristics of low mismatch rate and high temperature resistance, making it suitable for gene cloning, gene directed mutagenesis, SNP and end effector complement reactions. P665594 Component 1 mL 5 mL Storage P665594A 2×Pfu MasterMix (Dye) 1 mL 5×1 mL -20℃. Avoid freeze/thaw cycle. P665594B ddH2O 1 mL 5×1 mL -20℃. Avoid freeze/thaw cycle. Notes: 2×Pfu MasterMix contains Pfu DNA Polymerase, 3mM MgCl2 and 400µM each dNTP. Quality control:After testing, there was no exogenous nuclease activity; PCR method for detecting residual DNA without host; Can effectively amplify single copy genes from multiple genomes; Storage at 2-8 ℃ for three months showed no significant change in activity.Usage:The following is an example of a PCR reaction system and reaction conditions for amplifying a 1 kb fragment using human genomic DNA as a template. In practical operation, corresponding improvements and optimizations should be made based on the template, primer structure, and target fragment size.1. PCR reaction system Reagent 50 µlReaction system Final concentration 2×Taq MasterMix（Dye） 25 µL 1× Forward Primer，10 µM 2 µL 0.4 µM Reverse Primer，10 µM 2 µl 0.4 µM Template DNA <0.5 µg <0.5 µg/50 µL ddH2O up to 50 µL /Attention: When amplifying with Pfu enzyme, the purity of the primers is required to be high, and the length of the primers is greater than 18 bases. The primer concentration should be based on the final concentration of 0.1-1.0 µ M serves as a reference for setting the range. In the case of low amplification efficiency, the concentration of primers can be increased; When non-specific reactions occur, the primer concentration can be reduced to optimize the reaction system.2. PCR reaction conditions Step Temperature Time / Pre denaturation 94℃ 2 min / Denaturation 94℃ 30 s 25-35 cycles Anneal 55-65℃ 30 s 25-35 cycles Extend 72℃ 60 s 25-35 cycles Finally extended 72℃ 5 min / Attention:1) The thermal stability of Pfu enzyme is better than that of Taq enzyme. For templates with high GC content, the denaturation temperature can be increased to 98 ℃ without affecting the activity of Pfu enzyme.2) In general experiments, if the annealing temperature is 5 ℃ lower than the melting temperature Tm of the amplification primer, and the ideal amplification efficiency cannot be achieved, the annealing temperature should be appropriately reduced; When non-specific reactions occur, increase the annealing temperature to optimize the reaction conditions.3) Pfu enzyme has 3 '-5' exonuclease activity, so the extension rate of Pfu enzyme during amplification is much lower than that of Taq enzyme. The extension time is set according to the size of the amplified fragment, and the amplification extension rate of this product is 1 kb/min.4) The number of cycles can be set based on the downstream application of the amplification product. If the number of cycles is too small, the amplification amount is insufficient; If there are too many cycles, the probability of mismatches will increase, and non-specific backgrounds will be severe. So, while ensuring product yield, the number of cycles should be minimized as much as possible.5) This product has 3 '-5' exonuclease activity. The PCR product is a flat end and cannot be directly used for T/A cloning. If T/A cloning is required, "A" needs to be added at its end or cloned using a flat end vector... Read More | Sequence:Asp-Ala-Glu-Phe-Arg-His-Asp-Ser-Gly-Tyr-Glu-Val-His-His-Gln-Lys-Leu-Val-Phe-Phe-Ala-Glu-Asp-Val-Gly-Ser-Asn-Lys-Gly-Ala-Ile-Ile-Gly-Leu-Met-Val-Gly-Gly-Val-Val-Ile-AlaBiochemical mechanism:Amyloid protein β Protein segment 1-42 (A β 1-42) It has antioxidant and neuroprotective Sequence:Asp-Ala-Glu-Phe-Arg-His-Asp-Ser-Gly-Tyr-Glu-Val-His-His-Gln-Lys-Leu-Val-Phe-Phe-Ala-Glu-Asp-Val-Gly-Ser-Asn-Lys-Gly-Ala-Ile-Ile-Gly-Leu-Met-Val-Gly-Gly-Val-Val-Ile-AlaBiochemical mechanism:Amyloid protein β Protein segment 1-42 (A β 1-42) It has antioxidant and neuroprotective properties. Amyloid protein β Protein accumulation is associated with Alzheimer's disease (AD) and Down syndrome. A β 1-42 regulates cholesterol transport and acts as a transcription factor. It may also have anti-inflammatory and antimicrobial effects.Application:Amyloid protein is found in the brain of patients with Alzheimer's disease and Down syndrome β- The main segment of the protein.Amyloid protein β Protein fragments 1-42 have been used to:1. A β Preparation of 1-42 oligomer2. Western blot analysis3. Immunomagnetic Reduction (IMR) Plasma A β 42 Detected interference test4. Study the effect of resveratrol on A β 1-42 induced impairment of spatial learning, memory and synaptic plasticity5. Study A β Role in epithelial cell culture... Read More | Purity＞98% (SDS-PAGE; HPLC). Purity is greater than 98% as determined by SEC-HPLC and reducing SDS-PAGE.FunctionCytokine that stimulates the growth and differentiation of hematopoietic precursor cells from various lineages, including granulocytes, macrophages, eosinophils and erythrocytes.Purity＞98% (SDS-PAGE; HPLC). Purity is greater than 98% as determined by SEC-HPLC and reducing SDS-PAGE.FunctionCytokine that stimulates the growth and differentiation of hematopoietic precursor cells from various lineages, including granulocytes, macrophages, eosinophils and erythrocytes.Human Granulocyte-Macrophage Colony Stimulating Factor Granulocyte-Macrophage Colony Stimulating Factor (GM-CSF) is secreted by a number of different cell types (including activated T cells, B cells, macrophages, mast cells, endothelial cells and fibroblasts) in response to cytokine or immune and inflammatory stimulation. It was initially characterized as a growth factor that can support the in vitro colony formation of granulocyte-macrophage progenitors and has functions of stimulates the growth and differentiation of hematopoietic precursor cells from various lineages. GM-CSF has also been reported to have a functional role on non-hematopoietic cells and can induce human endothelial cells to migrate and proliferate. Additionally, it can stimulate the proliferation of a number of tumor cell lines, including osteogenic sarcoma, carcinoma and adenocarcinoma cell lines. GM-CSF is used as a medication to stimulate the production of white blood cells following chemotherapy and has also recently been evaluated in clinical trials for its potential as a vaccine adjuvant in HIV-infected patients. The recombinant Human GM-CSF is a non-glycosylated polypeptide chain containing 127 amino acids... Read More | Purity:>95%, by SDS-PAGE visualized with Coomassie® Blue Staining. Description： Interleukin 33 (IL-33), also known as DVS27 or NF-HEV (Nuclear Factor from High Endothelial Venules), is a pro-inflammatory protein and a chromatin-associated cytokine of the IL-1 family with high sequencePurity:>95%, by SDS-PAGE visualized with Coomassie® Blue Staining. Description： Interleukin 33 (IL-33), also known as DVS27 or NF-HEV (Nuclear Factor from High Endothelial Venules), is a pro-inflammatory protein and a chromatin-associated cytokine of the IL-1 family with high sequence and structural similarity to IL-1 and IL-18. IL-33 protein is expressed highly and rather selectively by high endothelial venule endothelial cells (HEVECs) in human tonsils, Peyer's patches, and lymph nodes. IL-33 protein has transcriptional regulatory properties, and the researches suggested that IL-33 is a dual-function protein that might act both as a cytokine and as an intracellular nuclear factor. As a type 2 cytokines, IL-33 protein also play a pivotal role in helminthic infection and allergic disorders... Read More | Product IntroductionKGF keratinocyte growth factor (KGF), a cytokine identified by Rubin et al (1989) from the culture supernatant of embryonic lung fibroblasts, is an FGF family member, namely FGF-7.KGF is secreted by stromal cells and its receptor is distributed in epithelial cells, where it is a Product IntroductionKGF keratinocyte growth factor (KGF), a cytokine identified by Rubin et al (1989) from the culture supernatant of embryonic lung fibroblasts, is an FGF family member, namely FGF-7.KGF is secreted by stromal cells and its receptor is distributed in epithelial cells, where it is a potent epithelial cell specific growth factor, and its mitogenic activity is mainly expressed in keratinocytes, which can specifically promote epithelial cell proliferation, migration and differentiation, and is closely related to many aspects, such as organ development, wound repair, tumorigenesis and immune reconstitution.Osrhkgf was created using genetic recombination, expressed from rice endosperm cells and through a protein purification process.Specification parametersSource Oryza sativaAppearance white lyophilized powderActivity ≥1.0×105IU/mgpH 6.5-7.5Molecular weight 19.0 kDEndotoxin ≦0.1EU/ugCAS No 148348-15-6Matters needing attentionReconstitution: it is recommended to lyophilize the powder of osrhkgf to 100-200 UG/ml with sterile water to make further dilutions with other solvents.The dissolved osrhkgf could be stored for 2-7 days at 4 ◦ C and used up as soon as possible.To not use for short periods, store at - 20 ℃.Use as soon as possible after opening to avoid contamination.Limitations of useIt is suitable for research, laboratory and production use only and cannot be used directly in humans... 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