PEG13-bis(Amino-Tri-(Propargyl-PEG2-ethoxymethyl)-methane) is large molecule with two sets of three terminal alkynes joined together by a large PEG linker. The alkynes are most frequently used in copper click chemistry with azides. The PEG linkers as well as numerous amide bonds provide high aqueous solubility to this compound, which may alter ADME of this compound.
PEG13-bis(Amino-Tri-(Propargyl-PEG2-ethoxymethyl)-methane) is large molecule with two sets of three terminal alkynes joined together by a large PEG linker. The alkynes are most frequently used in copper click chemistry with azides. The PEG linkers as well as numerous amide bonds provide high aqueous solubility to this compound, which may alter ADME of this compound.
Norgen’s RNA purification kits isolate total RNA with minimal amounts of genomic DNA contamination. However, for some sensitive downstream applications, it may be desirable to remove all traces of residual DNA. Norgen’s RNase-free DNAse I Kit, with Enzyme Incubation Buffer, can be used for optional on-column DNase digestion with any of Norgen’s RNA purification kits. Alternatively, after isolating total RNA using one of Norgen’s RNA purification kits, the RNA elution can be treated with this DNase I. The RNA can then be purified from the DNase using Norgen’s RNA Clean-Up and Concentration Kit (Cat# 23600), and the RNA can then be used in downstream applications.
Each RNase-Free DNase I Kit is supplied complete with sufficient enzyme and enzyme incubation buffer for 50 or 200 reactions.
Storage Conditions
The DNase I provided is in lyophilized form. It is stable for at least 3 months if stored at room temperature. However, it is recommended to store the DNase I vial at 2 – 8ºC (or below) upon receipt to maintain stability beyond 3 months. Buffer DR and Enzyme Incubation Buffer can be stored at room temperature. After reconstitution with Buffer DR (see product manual), the DNase I should be stored at -20ºC. All reagents should remain stable for at least 1 year in their unopened containers at the appropriate storage temperature.
| Component | Cat. 25710 (50 rxns) | Cat. 25720 (200 rxns) |
|---|---|---|
| DNase I | 1 vial / 1,600 units | 4 vials (1,600 units/vial) |
| Buffer DR | 1 mL | 4 x 1 mL |
| Enzyme Incubation Buffer | 6 mL | 4 x 6 mL |
| Product Insert | 1 | 1 |
K-CellG5-4V
SKU: 700004272
| Content: | (K-CellG5-4V) 120 / 240 assays (manual) / 480 assays (auto-analyser) or (K-CellG5-2V) 60 / 120 assays (manual) / 240 assays (auto-analyser) |
| Shipping Temperature: | Ambient |
| Storage Temperature: | Short term stability: 2-8oC, Long term stability: See individual component labels |
| Stability: | > 2 years under recommended storage conditions |
| Analyte: | endo-Cellulase |
| Assay Format: | Spectrophotometer, Auto-analyser |
| Detection Method: | Absorbance |
| Wavelength (nm): | 400 |
| Signal Response: | Increase |
| Limit of Detection: | 1.2 x 10-3 U/mL |
| Reproducibility (%): | ~ 3% |
| Total Assay Time: | 10 min |
| Application examples: | Fermentation broths, industrial enzyme preparations and biofuels research. |
| Method recognition: | Novel method |
The K-CellG5-2V pack size has been discontinued (read more).
Cellulase Activity Assay Kit.
The CellG5 assay reagent for the measurement of endo-cellulase (endo-1,4-β-glucanase) contains two components; 1) 4,6-O-(3-Ketobutylidene)-4-nitrophenyl-β-D-cellopentaoside (BPNPG5) and 2) thermostable β-glucosidase. The ketone blocking group prevents any hydrolytic action by the β-glucosidase on BPNPG5. Incubation with an endo-cellulase generates a non-blocked colourimetric oligosaccharide that is rapidly hydrolysed by the ancillary β-glucosidase. The rate of formation of 4-nitrophenol is therefore directly related to the hydrolysis of BPNPG5 by the endo-cellulase. The reaction is terminated and the phenolate colour is developed on addition of Tris buffer solution (pH 9.0).
The CellG5 assay represents a huge step forward in the methodology for the measurement of cellulase that traditionally relied on substrates such as CM-cellulose, Avicel, cellooligosaccharides, filter paper or dyed polysaccharides including CMC Congo red or cellulose azure.
View Cellulase Activity Assay Protocol.
View our complete list of assay kits for enzyme activities.
The CellG5 assay reagent for the measurement of endo-cellulase (endo-1,4-β-glucanase) contains two components; 1) 4,6-O-(3-Ketobutylidene)-4-nitrophenyl-β-D-cellopentaoside (BPNPG5) and 2) thermostable β-glucosidase. The ketone blocking group prevents any hydrolytic action by the β-glucosidase on BPNPG5. Incubation with an endo-cellulase generates a non-blocked colourimetric oligosaccharide that is rapidly hydrolysed by the ancillary β-glucosidase. The rate of formation of 4-nitrophenol is therefore directly related to the hydrolysis of BPNPG5 by the endo-cellulase. The reaction is terminated and the phenolate colour is developed on addition of Tris buffer solution (pH 9.0).
Hipure Stool RNA Kit is specially designed for stool RNA extraction. This kit is suitable for extracting high-purity microbial or host cell RNA from ≤0.1g stool samples. The kit adopts silica gel column purification technology and original solution system, which can effectively remove humic acid and other inhibitory factors in stool samples. The purified RNA can be directly used in RT-PCR, Northern hybridization and other experiments.
Specifications
| Features | Specifications |
| Main Functions | Isolation total RNA from 100-150mg stool sample |
| Applications | RT-PCR, Northern hybridization and other experiments |
| Purification method | Mini spin column |
| Purification technology | Silica technology |
| Process method | Manual (centrifugation or vacuum) |
| Sample type | Stool |
| Sample amount | 100-150 mg |
| Elution volume | ≥30μl |
| Time per run | ≤50 minutes |
| Liquid carrying volume per column | 100µg |
| Binding yield of column | 800µl |
The HiPure silica gel column uses a high binding ability glass fiber filter membrane as the substrate. Under the condition of high concentration of ionizing agent (such as Guanidinium chloride or guanidine isothiocyanate), the filter membrane can adsorb nucleic acid through hydrogen bonding and electrostatic and other physical factors, while protein or other impurities are not adsorbed and removed. The filter membrane that has adsorbed nucleic acids is washed to remove proteins and salts. Finally, low salt buffer solution (such as Buffer TE) or water can be used to wash out the nucleic acids adsorbed on the filter membrane. The obtained nucleic acid has high purity and can be directly used in various downstream experiments.
The stool samples are homogenized in the lysis solution, further lysed in a high-temperature water bath, and RNA is released into the lysis solution. Chloroform extraction removes genomic DNA and impurities, transfer the supernatant to an alcohol free binding solution, purify RNA through a column, and finally elute RNA with RNase Free Water. The purified RNA can be directly used for experiments such as PCR, Southern hybridization, and enzyme digestion.
Advantages
Kit Contents
| Contents | R418502 | R418503 |
| Purification Times | 50 Preps | 250 Preps |
| HiPure RNA Mini Columns | 50 | 250 |
| 2ml Collection Tubes | 50 | 250 |
| Glass Beads (0.1~0.6mm) | 30 g | 150 g |
| Buffer SPL | 30 ml | 140 ml |
| Buffer PHC | 30 ml | 140 ml |
| Buffer GRP | 60 ml | 250 ml |
| Buffer RW1 | 50 ml | 250 ml |
| Buffer RW2 * | 20 ml | 2 x 50 ml |
| RNase Free Water | 15 ml | 30 ml |
Storage and Stability
The kit components can be stored at room temperature (15–25°C) and are stable for 18 months under these conditions. At low temperatures, Buffer SPL may form precipitates, dissolve it by 55°C water bath. After receiving the product, Buffer PHC should be stored at 2-8°C.
Hipure Stool RNA Kit is specially designed for stool RNA extraction. This kit is suitable for extracting high-purity microbial or host cell RNA from ≤0.1g stool samples. The kit adopts silica gel column purification technology and original solution system, which can effectively remove humic acid and other inhibitory factors in stool samples. The purified RNA can be directly used in RT-PCR, Northern hybridization and other experiments.
