| Description | IFT27 Human Pre-designed siRNA Set A contains three designed siRNAs for IFT27 gene (Human), as well as a negative control, a positive control, and a FAM-labeled negative control. Components IFT27 siRNA-1: 5 nmol (HPLC) IFT27 siRNA-2: 5 nmol (HPLC) IFT27 siRNA-3: 5 nmol (HPLC) siRNA Negative Control:IFT27 Human Pre-designed siRNA Set A contains three designed siRNAs for IFT27 gene (Human), as well as a negative control, a positive control, and a FAM-labeled negative control. Components IFT27 siRNA-1: 5 nmol (HPLC) IFT27 siRNA-2: 5 nmol (HPLC) IFT27 siRNA-3: 5 nmol (HPLC) siRNA Negative Control: 5 nmol (HPLC) FAM-labeled siRNA Negative Control: 5 nmol (HPLC) GAPDH siRNA Positive Control:5 nmol (HPLC)... Read More | Product Content:F665667Component5 mL40 mLStorageF665667A2×Flash PCR MasterMix (Dye) 5×1 mL 40×1 mL-20℃. Avoid freeze/thaw cycle.F665667BddH2O 5×1 mL40×1 mL-20℃. Avoid freeze/thaw cycle. Products Introduction This product is a premixed system consisting of a new Product Content:F665667Component5 mL40 mLStorageF665667A2×Flash PCR MasterMix (Dye) 5×1 mL 40×1 mL-20℃. Avoid freeze/thaw cycle.F665667BddH2O 5×1 mL40×1 mL-20℃. Avoid freeze/thaw cycle. Products Introduction This product is a premixed system consisting of a new high efficient fast DNA Polymerase, Mg2+, dNTPs, and PCR stabilizers and enhancers at 2× concentration. It is a new rapid DNA polymerase developed by CombiSigma with high amplification speed and stability. The extension speed is up to 5 s/kb, and the PCR can be completed in as little as 15 minutes, while longer fragments (>3 kb) or complex templates can be extended at a speed of 10-30 s/kb or a higher number of cycles. The unique MasterMix formula makes the whole reaction system very stable, while complex templates can be amplified effectively, and more than 98% of PCR amplification can be successful in one run. Simply add the DNA template and primers and top up with water to minimize human error, contamination and time.The dye (blue) has been added to the product and it is ready for electrophoretic detection at the end of the reaction. The PCR product is amplified with an 'A' base at the 3′ end and can therefore be used directly for T/A cloning and is suitable for use in the CombiVerge Seamless Cloning Kit, T4 Ligation Kit and sensory products.This product is mainly suitable for ultra-fast PCR, complex templates, complex secondary structures, gene cloning and large-scale genetic testing that requires high fidelity. quality control No exogenous nuclease activity was detected; no host residual DNA was detected by PCR; single-copy genes in various genomes could be amplified efficiently. UsageThe 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, which should be improved and optimized according to the template, primer structure and size of the target fragment in actual operation.PCR reaction system Note: Please use the final concentration of 0.1-1.0 µM as a reference for setting the range of primer concentration. If the amplification efficiency is not high, the primer concentration can be increased; if a non-specific reaction occurs, the primer concentration can be decreased to optimize the reaction system.PCR reaction conditions Note: 1) Note: For simple templates, the pre-denaturation time can be controlled at 30 s-1 min, for complex templates such as bacterial fluids, the pre-denaturation time can be increased to 2 min.Optimization of parameter settings 1. Template DNA amount setting:Excessive amounts of template may result in non-specific amplification or smear. The recommended amount of template DNA in a 50 µl PCR reaction system is as follows:-Human genomic DNA 5 ng-500 ng-Escherichia coli genomic DNA 50 pg-100 ng-plasmid DNA 10 pg-1 ng 1. 30-35 number of cycles2. Primer concentration setting: The primer concentration can be set between 0.1 µM and 1.0 µM. A low primer concentration may result in low amplification products. Too high a primer concentration will inhibit specific amplification and may result in non-specific amplification.3. Annealing temperature setting: In general, the annealing temperature is 5℃ lower than the melting temperature of amplification primer Tm, so the annealing temperature can be lowered appropriately when the desired amplification efficiency cannot be obtained; the annealing temperature can be raised appropriately when non-specific reaction occurs. For complex templates, it is necessary to adjust the annealing temperature to achieve efficient amplification.4. Extension time setting: The extension time should be set according to the size of the amplified fragments. The following extension times are recommended: simple templates such as plasmids: 5-15 s/kb; regular genomes, cDNA templates: 10-15 s/kb; complex templates, crude templates: 20-30 s/kb; (the extension time should not be too short and should be at least 5 s/kb, but should not exceed 30 s/kb).5. Number of cycles: The number of cycles can be set according to the downstream application of the amplified product. If the number of cycles is too low, the amount of amplification will be insufficient; if the number of cycles is too high, the chance of mismatch will increase and the non-specific background will be serious. Therefore, the number of cycles should be minimized under the premise of ensuring the product yield... Read More | Protein Purity≥85% by SDS PAGEExtinction CoeffA280 nm = 10.16 at 1.0 mg/ml for pure C3Molecular Weight187,000 Da (2 chains)General DescriptionRat C3 is purified from pooled normal rat serum. C3 is central to the activation of all three pathways of complement activation (Law, S.K.A. and Reid, KProtein Purity≥85% by SDS PAGEExtinction CoeffA280 nm = 10.16 at 1.0 mg/ml for pure C3Molecular Weight187,000 Da (2 chains)General DescriptionRat C3 is purified from pooled normal rat serum. C3 is central to the activation of all three pathways of complement activation (Law, S.K.A. and Reid, K.B.M. (1995)). Initiation of each pathway generates proteolytic enzyme complexes (C3 convertases) which are bound to the target surface. These enzymes cleave a peptide bond in C3 releasing the anaphylatoxin C3a and activating C3b. For a brief time (~60 µs) this nascent C3b is capable of reacting with and covalently coupling to hydroxyl groups on the target surface. Carbohydrates are the favored target, but protein hydroxyls and amino groups also react. This process of tagging the target surface with C3b is called opsonization. The reactive site in nascent C3b is a thioester (Tack B.J., et al. (1980); Pangburn M.K. and MüllerEberhard H.J. (1980)) and C3b is linked to the target through a covalent ester bond (an amide bond is formed if C3b is attached to amino groups). Most of the C3 activated during complement activation never attaches to the surface because its thioester reacts with water forming fluid phase C3b which is rapidly inactivated by factors H and I forming iC3b. Surface-bound C3b is necessary in all three pathways for efficient activation of C5 and formation of C5b-9 complexes that lyse the target cell membrane. Surface-bound C3b and its breakdown products iC3b and C3d are recognized by numerous receptors on lymphoid and phagocytic cells which use the C3b ligand to stimulate antigen presentation to cells of the adaptive immune system. The end result is an expansion of target-specific B-cell and T-cell populations.Physical Characteristics & StructureThe calculated molecular weight of rat C3 based on its amino acid sequence is 184,111daltons (without the signal peptide) and is similar to that of human C3 (185,000 daltons).The molecular weight of rat C3 as determined by SDS/polyacrylamide gel electrophoresis has been reported by Daha, M.R. et al., (1979) to be 187,000 daltons composed of two disulfide linked chains, alpha chain (123,000 daltons) and beta chain (76,000 daltons). The extinction coefficient of rat C3 (E1%/280nm = 10.16) is calculated based on its amino acid sequence using ProtParam and assumes all pairs of Cys residues form cystines (i.e. a pair of cysteine molecules are joined by a disulfide bond). The theoretical pI of rat C3 is 6.12. The normal plasma concentration of C3 inWistar rats has been reported to be 0.581mg/ml (Daha, M.R. et al., (1979)).FunctionThe biological functions of C3 are described above in the General Description section.GeneticsRat C3 chromosome location 9. The NCBI Gene ID number for rat C3 is 24232 and UniProt accession number is P01026.Precautions/Toxicity/HazardsThis protein is purified from animal plasma/serum and therefore precautions appropriate for handling any animal blood-derived product must be used.ReferencesLaw, S.K.A. and Reid, K.B.M. (1995) Complement 2nd Edition (ISBN 0199633568) Oxford University Press, Oxford.Tack BF, Harrison RA, Janatova J, Thomas ML, Prahl JW. (1980) Evidence for presence of an internal thiolester bond in third component of human complement. Proc Natl Acad Sci U S A. 77:5764-8.Pangburn M.K. and Müller-Eberhard H.J. (1980) Relation of putative thioester bond in C3 to activation of the alternative pathway and the binding of C3b to biological targets of complement. J Exp Med. 152:1102-14.Daha MR, Stuffers-Heiman M, Kijlstra A and Van ES LA. (1979) Isolation and characterization of the third component of rat complement. Immunology 36:63-70... Read More | Bovine pancreatic deoxyribonuclease is an endonuclease which splits phosphodiester linkages, preferentially adjacent to a pyrimidine nucleotide yielding polynucleotides with free hydroxyl group at the 3' position and phosphate group at the 5' position. The average chain length of a limit digest is aBovine pancreatic deoxyribonuclease is an endonuclease which splits phosphodiester linkages, preferentially adjacent to a pyrimidine nucleotide yielding polynucleotides with free hydroxyl group at the 3' position and phosphate group at the 5' position. The average chain length of a limit digest is a tetranucleotide.Used for the removal of DNA from protein samples. Deoxyribonuclease I from bovine pancreas has been used in a study to compare several procedures for reducing RNase contamination in preparations of DNase. Deoxyribonuclease I from bovine pancreas has also been used in a study to investigate the effect of the composition of sodium dodecyl sulfate preparations on the renaturation of enzymes after polyacrylamide gel electrophoresis... Read More | This product is a mixture of fast reverse transcription reagents. The 5 x EasyQuick RT MasterMix contains all the reagents required for reverse transcription from RNA templates to cDNA first strand, including EasyQuick RT Reversase, RNase Inhibitor, Random 6 mers, Oligo dT Primer, dNTP, EQ-RT BufferThis product is a mixture of fast reverse transcription reagents. The 5 x EasyQuick RT MasterMix contains all the reagents required for reverse transcription from RNA templates to cDNA first strand, including EasyQuick RT Reversase, RNase Inhibitor, Random 6 mers, Oligo dT Primer, dNTP, EQ-RT Buffer, etc. The reverse transcription efficiency of this product is high, and it can perform a good reverse transcription reaction on a small amount of RNA templates. The fluorescence quantitative template cDNA first strand synthesis can be completed in 15 minutes. This reagent kit is very convenient and fast to operate, and only RNA templates and water need to be added for reverse transcription reaction, making it particularly suitable for high-throughput detection.E665905Component200 TStorageE665905A5×EasyQuick RT MasterMix 400 µL-20℃. Avoid freeze/thaw cycle.E665905BRNase-Free Water 2×1 mL-20℃. Avoid freeze/thaw cycle. Product features1. Convenience: The ready to use reverse transcription Mix only requires the addition of RNA templates and water to initiate the reaction.2. Fast: Complete cDNA first strand synthesis in 15 minutes.3. High reverse transcription efficiency: The reverse transcription efficiency is above 90%.4. High sensitivity: PG level templates can also obtain high-quality cDNA.5. Read through complex templates: templates with high GC content and complex secondary structures.Matters needing attention1. During the operation, RNase contamination should be avoided to prevent RNA degradation or cross contamination during experiments. It is recommended that operators wear masks and disposable gloves, frequently change gloves, and use specialized instruments and consumables.2. The reverse transcription system is prepared on ice for operation to prevent RNA degradation. The MasterMix of the reagent kit should be stored at -20 ℃ as soon as possible after use, and repeated freeze-thaw should be avoided as much as possible.3.10 µ The reaction system can be used up to 1 µ G Total RNA, if the amount of template RNA is greater than 1 µ g. Please expand the reaction system proportionally.4. For RNA templates with complex secondary structures, it is recommended to incubate the template RNA at 65 ℃ for 5 minutes on ice before proceeding with the next step, followed by brief centrifugation.Operation steps1. Thaw the template RNA on ice; After thawing the components of the reagent kit at room temperature, immediately place them on ice. Before use, vortex shake and mix each solution, and centrifuge briefly before use.2. Prepare the reaction system according to the following table (please prepare the reaction solution on ice), vortex shake and mix well, briefly centrifuge, and collect the solution on the tube wall to the bottom of the tube. Reagent 10 µl Reaction system Final concentration RNA Template X µl 1 pg～0.5 µg ¹⁾ 5×EasyQuick RT MasterMix ²⁾ 2 µl 1× RNase-Free Water up to 10 µl /Attention:1) If the total RNA content is greater than 1 µ g, please expand the reaction system proportionally.2) 5 x EasyQuick RT MasterMix contains Oligo (dT), Random Prime, RNase Inhibitor, dNTP Mixture, EQ-RT Buffer, etc. 3. Incubate at 37 ℃ for 15 minutes. 4. Incubate at 85 ℃ for 5 seconds to inactivate reverse transcriptase.5. After a brief centrifugation, place it on ice for subsequent experiments. If it needs to be stored for a long time, please place it at -20 ℃... Read More |