| Description | L3MBTL1 Human Pre-designed siRNA Set A contains three designed siRNAs for L3MBTL1 gene (Human), as well as a negative control, a positive control, and a FAM-labeled negative control. Components L3MBTL1 siRNA-1: 5 nmol (HPLC) L3MBTL1 siRNA-2: 5 nmol (HPLC) L3MBTL1 siRNA-3: 5 nmol (HPLC) siRNA L3MBTL1 Human Pre-designed siRNA Set A contains three designed siRNAs for L3MBTL1 gene (Human), as well as a negative control, a positive control, and a FAM-labeled negative control. Components L3MBTL1 siRNA-1: 5 nmol (HPLC) L3MBTL1 siRNA-2: 5 nmol (HPLC) L3MBTL1 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 | 6-Bromo-2-naphthyl β-D-glucuronide is a histochemical substrate for β-D-glucuronidase | Inquire | Malic Dehydrogenase is a ubiquitous enzyme, which exists in two isoforms in eukaryotic cells.Malic dehydrogenase exists as a dimer with each subunit containing an NAD-binding domain and a substrate-binding carboxy-terminal domain required for activity. Malic dehydrogenase is a cytoplasmic isozyme Malic Dehydrogenase is a ubiquitous enzyme, which exists in two isoforms in eukaryotic cells.Malic dehydrogenase exists as a dimer with each subunit containing an NAD-binding domain and a substrate-binding carboxy-terminal domain required for activity. Malic dehydrogenase is a cytoplasmic isozyme and an important catalyst in the tricarboxylic acid cycle.ReagentsA. 0.1 M Tris-HCl buffer (pH7.8)B. 0.01 M Phosphate buffer (KH2PO4-NaOH, pH 7.0)C. Triton X-100 solution (50 mg/ml)D. 0.01 M Phosphate buffer containing 0.1% Triton X-100 (KH2PO4-NaOH, pH 7.0)Dilute 20 ml of Triton X-100 solution (C) with approx. 800 ml of 0.01M Phosphate buffer (B). Fill up to 1,000 ml with 0.01M Phosphate buffer (B).E. NADH soluton Weigh 9 mg of NADH and dissolve in 0.1M Tris-HCl bufer (A). Fill up to 50 ml with 0.1M Tris-HCl Buffer (A). (Can be used for 5 days if kept refrigerated)F. Substrate solutionWeigh 11 mg of oxaloacetic acid and dissolve in 0.1M Tris-HCl buffer (A). Fill up to 50 ml with 0.1M Tris-HCl buffer (A) (Make a fresh solution for each use.)G. Enzyme solutionWeigh out Malate Dehydrogenase and dissolve in chilled 0.01M Phosphate Bufer containing 0.1% Triton X-100 (D). Enzyme solution should be prepared so that the value of AOD/minute becomes in the range of 0.025 ± 0.010.ProcedurePipette 2.0 ml of NADH solution (E) and 0.90 ml of Substrate solution (F) respectively into a quartz cell (d=10 mm) and keep at 25 + 0.5'℃ for 5 minutes. Then, pipete 0.10 ml of Enzyme solution (G) into the quartz cell and mix well immediately. Keep the reaction mixture at 25 ±0.5'C.Exaclly at 2 minutes and 5 minutes after the addition of Enzyme solution (G), measure the absorbances of the reaction mixture at 340 nm(A2 and A5).As a blank, pipette 0.01M Phosphate buffer (D) into another quartz cel (d=10 mm) instead of the Enzyme solution (G) and follow the same procedure described above (Ab2 and Ab5).CalculationMalate dehydrogenase activity (u/mg)=[(A2-A5)-(Ab2-Ab5)]/3*(1/6.22)*(n/0.1) ApplicationThis enzyme is used for the enzymatic determination of L-malate and gluamate oxalo-acetate transaminase(GOT)in clinical diagnosis... Read More | This reagent kit is based on TRIzon's improved columnar total RNA extraction kit. This product can be extracted from animal groupsExtract total RNA from samples such as textiles, plant materials, various microorganisms, and cultured cells. Firstly, the cracking solution is fully cracked This reagent kit is based on TRIzon's improved columnar total RNA extraction kit. This product can be extracted from animal groupsExtract total RNA from samples such as textiles, plant materials, various microorganisms, and cultured cells. Firstly, the cracking solution is fully cracked andHomogenized samples, in their unique high salt state, RNA specifically binds to silicon matrix membranes, greatly reducingEffectively removing organic solvent contamination while removing protein contamination, resulting in higher purity and quality of RNA. bookThe product can quickly extract total RNA from various cells or tissues, and can process 30-50 mg of tissue or 5 × 10 ⁶ cells each time,Can handle multiple different samples simultaneously. If it is an RNA experiment that is very sensitive to trace amounts of DNA, the residual DNA can be utilizedUsing DNase without RNase for digestion and removal on the column, the extracted RNA can be directly applied to RT-PCR Experiments such as Northern Blot, Dot Blot, and in vitro translation. U665516 Component 50 T Storage U665516A DNase I 1000 U -20℃. Avoid freeze/thaw cycle. U665516B 10×Reaction Buffer 1000 µL -20℃. Avoid freeze/thaw cycle. U665516C TRIzon Reagent 60 mL 2-8℃. Protect from light. U665516D TRIzon PaI™ 10 mL 2-8℃. Protect from light. U665516E Buffer RW1 40 mL RT U665516F Buffer RW2 (concentrate) 11 mL RT U665516G RNase-Free Water 10 mL RT U665516H Spin Columns RM with Collection Tubes 50 sets RT U665516I RNase-Free Centrifuge Tubes (1.5 mL) 50 EA RTPreparation and important precautions before the experiment:1.To prevent RNase pollution, attention should be paid to the following aspects:1) RNase's plastic products and gun heads to avoid cross contamination.2) Prepare the solution using water without RNase.3) Operators should wear disposable masks and gloves, and change gloves frequently during the experiment.2. The sample should avoid repeated freezing and thawing, otherwise it will affect the yield and quality of RNA extraction.3. If TRIzon Reagent is found to have precipitates before use, it can be dissolved in a water bath at 56 ℃ for a few minutes.Before the first use, anhydrous ethanol should be added to Buffer RW2 according to the instructions on the reagent bottle label.5. All centrifugation steps should be carried out at room temperature unless otherwise specified, and all operation steps should be carried out quickly.Usage：1. Sample processing1a. Organization: 30-50 mg of tissue is thoroughly ground in liquid nitrogen and 1 mL of TRIzon Reagent is added, or 1 mL of TRIzon Reagent is added to the tissue sample and homogenized. Attention: The sample volume should not exceed 10% of the volume of TRIzon Reagent.2a. Single layer cell culture: Remove the culture medium and add an appropriate amount every 10 cm ² Add 1 mL of TRIzon Reagent.3a. Cell suspension: Collect cells by centrifugation. Add 1 mL of TRIzon Reagent to every 5 × 10 µ m cell.2. After adding TRIzon Reagent, repeatedly blow a few times to fully crack the sample. Leave at room temperature for 5 minutes to completely separate the protein nucleic acid complex.3. Add 200 to every 1 mL of TRIzon Reagent µ LTRIzon PaI ™， Cover the tube tightly, vigorously shake for 15 seconds, and let it sit at room temperature for 2 minutes.4. Centrifuge at 4 ℃ 12000 rpm (~13400 × g) for 10 minutes. At this time, the sample is divided into three layers: the red organic phase, the middle layer, and the upper colorless aqueous phase. RNA is mainly in the upper aqueous phase. Move the upper aqueous phase to a new RNase Free centrifuge tube (provided).5. Add an equal volume of 70% ethanol (prepared without RNase water) to the obtained aqueous solution, invert and mix well.6. Add all the solutions obtained in the previous step to the spin columns RM that have been loaded into the collection tube. If the solution cannot be added at once, it can be transferred in multiple batches. Centrifuge at 12000 rpm for 20 seconds, discard the waste liquid in the collection tube, and place the adsorption column back into the collection tube.7. Add 350 to the adsorption column µ L Buffer RW1, centrifuge at 12000 rpm for 20 seconds, discard the waste liquid in the collection tube, and place the adsorption column back into the collection tube.8. Preparation of DNase I mixture: Take 52 µ LRNase Free Water, add 8 to it µ L 10 x Reaction Buffer and 20 µ L DNase I (1 U/ µ L) Mix well and prepare to a final volume of 80 µ The reaction solution of L.9. Directly add 80 µ L DNase I mixture to the adsorption column and incubate at 20-30 ℃ for 15 minutes.10. Add 350 to the adsorption column µ L Buffer RW1, centrifuge at 12000 rpm for 1 minute, discard the waste liquid, and place the adsorption column back into the recovery manifold.11. Add 500 to the adsorption column µ L Buffer RW2 (check if anhydrous ethanol has been added before use), centrifuge at 12000 rpm for 20 seconds, discard the waste liquid in the collection tube, and place the adsorption column back into the collection tube.12. Repeat step 11.Centrifuge at 12000 rpm for 2 minutes and discard the waste liquid from the collection tube. Place the adsorption column at room temperature for a few minutes and thoroughly air dry. Attention: The purpose of this step is to remove residual ethanol from the adsorption column, which will affect subsequent enzymatic reactions (enzyme digestion,. )PCR, etc.14. Place the adsorption column in a new RNase free centrifuge tube and add 30-50 to the middle of the adsorption column µ Place RNase Free Water at room temperature for 1 minute, centrifuge at 12000 rpm for 1 minute, collect RNA solution, and store RNA at -70 ℃ to prevent degradation.Attention:1) The volume of RNase Free Water should not be less than 30 µ L. Small volume affects the recovery rate.2) If you want to increase RNA production, you can use 30-50 µ Repeat step 14 for the new RNase Free Water.3) If you want to increase the RNA concentration, you can add the obtained solution back to the adsorption column and repeat step 14... Read More |