endo-BCN-PEG3-acid is a click chemistry linker consisting of a BCN group with a terminal carboxylic acid. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) to yield a amide bond. The BCN group can react with azide-tagged biomolecules. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
endo-BCN-PEG3-acid is a click chemistry linker consisting of a BCN group with a terminal carboxylic acid. The terminal carboxylic acid can react with primary amine groups in the presence of activators (e.g. EDC, or HATU) to yield a amide bond. The BCN group can react with azide-tagged biomolecules. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
The ProteoSpin™ Total Protein Concentration, Detergent Clean-Up and Endotoxin Removal Kits are designed for the rapid removal of endotoxins from previously purified proteins or peptides, with protein recoveries of > 95% being achieved. Endotoxins, also known as lipopolysaccharides, are cell-membrane components of Gram-negative bacteria such as E. coli. Endotoxins liberated by Gram-negative bacteria are frequent contaminations of protein solutions derived from bioprocesses. Due to the high toxicity of endotoxins in vivo and in vitro, their removal from protein preparations is often necessary prior to the use of the protein in downstream applications. These kits efficiently reduce endotoxin levels to ≤ 0.01 EU/mg of protein, using spin column chromatography based on Norgen’s proprietary resin as the separation matrix. These kits are highly efficient in removing many different salts commonly used in the laboratory including, but not limited to, MgCl2, NaCl, KCl, CaCl2, LiCl and CsCl. The purified protein samples can be used in a number of downstream applications including sequencing, cloning, and in vitro and in vivo introduction into cells and organisms for various purposes. The simultaneous removal of salts while concentrating a dilute protein solution makes the kit a convenient method for preparing proteins before running many downstream applications such as SDS-PAGE, isoelectric focusing, X-ray crystallography, NMR spectroscopy, mass spectroscopy and other applications.
Mini Kit
The ProteoSpin™ Total Protein Concentration, Detergent Clean-Up and Endotoxin Removal Mini Kit is designed for the rapid removal of endotoxins from up to 200 μg of previously purified proteins or peptides, with protein recoveries of > 95% being achieved.
Maxi Kit
The ProteoSpin™ Total Protein Concentration, Detergent Clean-Up and Endotoxin Removal Maxi Kit is designed for the rapid removal of endotoxins from up to 4 mg of previously purified proteins or peptides, with protein recoveries of > 95% being achieved.
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| Kit Specifications | |
| Maximum Protein Input | 200 μg |
| Maximum Column Volume Input | 600 μL |
| Molecular Weight of Recovered Proteins | No Molecular Weight cut-off |
| Final Endotoxin Levels | ≤ 0.01 EU/μg protein |
| Protein Recovery | 90-95% |
| % Detergent Removal | 90-95% |
| Detergents that can be Removed | Including Triton® X-100, CHAPS, NP-40 and Tween 20 |
| Minimum Elution Volume | 50 μL |
| Time to Complete 10 Purifications | 20 minutes |
Storage Conditions
All solutions should be kept tightly sealed and stored at room temperature. This kit is stable for 2 years from the date of shipment.
| Component | Cat. 22800 (25 preps) | Cat. 22200 (4 preps) |
|---|---|---|
| Binding Buffer J | 8 mL | 8 mL |
| Binding Buffer N | 4 mL | 20 mL |
| Wash Solution M | 50 mL | 130 mL |
| Wash Solution CIP | 20 mL | 60 mL |
| Wash Solution N | 30 mL | 130 mL |
| Wash Solution NIP | 20 mL | 60 mL |
| Elution Buffer G | 6 mL | 20 mL |
| Endotoxin Removal Solution | 1.5 mL | 1.5 mL |
| Protein Neutralizer EF | 2 mL | 2 mL |
| Maxi Spin Columns (assembled with Collection Tubes) | – | 4 |
| Mini Spin Columns | 25 | – |
| Collection Tubes | 25 | – |
| Maxi Spin Columns (assembled with Collection Tubes) | 4 | |
| Elution Tubes (1.7 mL) | 25 | – |
| Elution Tubes (50 mL) | 4 | – |
| Product Insert | 1 | 1 |
These kits are designed for the rapid spin column removal of endotoxins from previously purified DNA. Norgen’s spin columns bind DNA while endotoxins, salts and other contaminants are washed away. These kits reduce endotoxins to 0.1 EU/μg DNA or less providing plasmid DNA that is immediately ready for transfections or other endotoxin-sensitive applications. Typical recovery of DNA is >90% of the starting sample.
Endotoxin Removal Kit (Mini)
This kit is designed for the rapid spin column removal of endotoxins from up to 25 µg of previously purified DNA. The convenient spin column procedure can be completed in approximately 20 minutes.
Endotoxin Removal Kit (Midi)
This kit is designed for the rapid spin column removal of endotoxins from up to 200 μg of previously purified DNA. The convenient spin column procedure can be completed in approximately 30 minutes.
Endotoxin Removal Kit (Maxi)
This kit is designed for the rapid spin column removal of endotoxins from up to 1 mg of previously purified DNA. The convenient spin column procedure can be completed in approximately 30 minutes.
About Endotoxins
Endotoxins (also called lipopolysaccharides), are cell-membrane components of Gram-negative bacteria such as E. coli. Endotoxins are released during the lysis step of plasmid purification and significantly reduce transfection efficiencies in endotoxin sensitive cell lines. Therefore, the removal of endotoxins from plasmid preparations is often necessary prior to the use of the DNA in such downstream applications.
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| Kit Specifications | |
| Maximum DNA Input | 25 μg |
| Final Endotoxin Level | ≤ 0.1 EU/µg DNA |
| Size of DNA Purified | Up to 13,000 bp |
| Maximum DNA Volume Input | 100 μL |
| Average Recovery | > 90% |
| Time to Complete 10 Purifications | 20 minutes |
Storage Conditions and Product Stability
All solutions should be kept tightly sealed and stored at room temperature. This kit is stable for 2 years after the date of shipment.
| Component | Cat. 22700 (25 preps) | Cat. 52200 (10 preps) | Cat. 21900 (4 preps) |
|---|---|---|---|
| Buffer SK | 15 mL | 60 mL | 60 mL |
| Wash Solution H | 18 mL | 18 mL | 18 mL |
| Elution Buffer I | 6 mL | 12 mL | 12 mL |
| Endotoxin Removal Solution | 1.5 mL | 1.5 mL | 1.5 mL |
| Precipitation Solution | – | 1.5 mL | 1.5 mL |
| Spin Columns (assembled with Collection Tubes) | – | 10 | 4 |
| Spin Columns | 25 | – | – |
| Collection Tubes | 25 | – | – |
| Elution Tubes (1.7 mL) | 25 | – | – |
| Elution Tubes (15 mL) | – | 10 | – |
| Elution Tubes (50 mL) | – | – | 4 |
| Product Insert | 1 | 1 | 1 |
| Content: | 100 assays per kit |
| 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: | Histamine |
| Assay Format: | Spectrophotometer |
| Detection Method: | Absorbance |
| Wavelength (nm): | 492 |
| Signal Response: | Increase |
| Linear Range: | 0.5 to 12 μg of histamine per assay |
| Limit of Detection: | ~ 0.09 μg of histamine per test or ~ 0.75 mg/Kg (ppm) of histamine in a fish sample |
| Limit of Quantification: | ~ 0.5 mg of histamine per test or ~ 4.2 mg/Kg (ppm) of histamine in a fish sample |
| Reproducibility (%): | ~ 3% |
| Reaction Time (min): | ~ 20 min |
| Application examples: | Fish samples in various forms (e.g. fresh, canned, frozen, etc). |
This product has been discontinued.
The Histamine Assay Kit for the detection of histamine in food including fish samples in various forms.
High levels of histamine may develop in a variety of foods as they decompose, this is an issue that particulary affects fish.
Megazyme’s Histamine Assay Kit provides a simple robust method with a fast reaction time of ~ 20 mins.
View all of our assay kits.
Advantages
The Histamine Assay Kit for the detection of histamine in food including fish samples in various forms.
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