N-(t-butyl ester-PEG2)-N-bis(PEG2-propargyl) is a multi-functional PEG linker with two terminal propargyl groups and a t-butyl ester. The propargyl groups enables formation of triazole linkage with azide-bearing compounds or biomolecules in copper catalyzed Click Chemistry. The t-butyl protected carboxyl group can be deprotected under mild acidic conditions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Detail
N-(t-butyl ester-PEG2)-N-bis(PEG2-propargyl) is a multi-functional PEG linker with two terminal propargyl groups and a t-butyl ester. The propargyl groups enables formation of triazole linkage with azide-bearing compounds or biomolecules in copper catalyzed Click Chemistry. The t-butyl protected carboxyl group can be deprotected under mild acidic conditions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Other Products
RNA/DNA/Protein Purification Plus Kits
Product Info
Document
Product Info
Overview
Sequentially purify total RNA (and miRNA), DNA and proteins from a single sample
No sample splitting or need to use phenol or precipitation methods
Purify RNA/DNA/Protein from cultured animal cells, tissues, blood, bacteria, yeast, fungi or plants
Purification is based on spin column chromatography that uses Norgen’s proprietary resin separation matrix
RNA/DNA/Protein Purification Plus Kit
This kit provides a rapid method for the high throughput isolation and purification of total RNA, DNA and proteins sequentially from a single sample of cultured animal cells, small tissue samples, blood, bacteria, or yeast. The kit employs two columns: 1) for gDNA purification and 2) for RNA purification utilizing Norgen’s resin columns (superior for the binding of all RNA sizes including miRNA). The proteins are also purified on the second column after RNA elution. The proteins are eluted in buffer and are ready for downstream application without any further clean up required. The proteins can be quantified directly, used in western blots, ELISA or mass spectrometry. This kit provides a rapid spin-column method for the isolation and purification of total RNA, genomic DNA and proteins sequentially from a single sample of cultured animal cells, small tissue samples, blood, bacteria, yeast, fungi or plants.
RNA/DNA/Protein Purification Plus Micro Kit
This kit provides a rapid spin-column method for the isolation and purification of total RNA, DNA and proteins sequentially from a single sample of cultured animal cells, small tissue samples, microdissected samples including LCM, stem cells, sorted cells, and CTC. The total RNA, genomic DNA and proteins are all column purified in less than 30 minutes. The RNA and DNA can be eluted in as little as 20 µL while the protein can be eluted in as little as 50 µL. This kit provides the same performance as if the samples were isolated from dedicated kits.
RNA/DNA/Protein Purification 96-Well Plus Kit
The kit employs two plates: 1) for DNA purification and 2) for RNA purification utilizing Norgen’s resin (superior for the binding of all RNA sizes including miRNA). Please see the protocol schematic below.
Maximum Amount of Starting Material:Animal CellsAnimal TissuesBloodPlant / Fungi Tissues
5 x 105 cells5 mg (for selected tissues)50 µL25 mg
Average Yield* HeLa Cells (5 x 105 cells) HeLa Cells (5 x 105 cells) HeLa Cells (5 x 105 cells)
RNA: 7.5 μg DNA: 1-2 μg Protein: 70 μg
Storage Conditions and Product Stability The Protein Loading Dye should be stored at -20°C after the addition of DL-Dithiothreitol (DTT). All solutions should be kept tightly sealed and stored at room temperature. This kit is stable for 1 year after the date of shipment.
Huayi Cell Factory is a robust and easy-to-use cell culture platform for applications in the production of human and animal vaccines, therapeutic proteins, cell therapy, and gene therapy.
To address the needs of your workflow, We have three kinds of mouth, which is available on most cell culture products to ensure consistent performance from lot to lot and from format to format.
The product assembled with ultrasonic welded technology
Versatile port design facilitates both pouring and aseptic filling techniques
Gamma radiation sterilization
the cell culture surface area
of one 10-layer Cell Factory unit is equivalent to the area
of 36 T-175 flasks
Document
Huayi Cell Factory is a robust and easy-to-use cell culture platform for applications in the production of human and animal vaccines, therapeutic proteins, cell therapy, and gene therapy.
To address the needs of your workflow, We have three kinds of mouth, which is available on most cell culture products to ensure consistent performance from lot to lot and from format to format.
For the isolation and differentiation of sorbitol-negative Escherichia coli serotype O157 from food and animal feed and other materials
Principle and Interpretation
Enzymatic digest of casein and enzymatic digest of animal tissue provides nitrogen source, vitamins and growth factors; sodium chloride maintains balanced osmoticpressure; sorbitol is a fermentable sugar; No. 3 bile salt and crystal violet inhibit Gram-positive bacteria, potassiumtellurite inhibits non-o157 Escherichia coli, and cefixime inhibits Proteus; neutral red is a pH indicator; and agar is the coagulant of the culture medium.
Formulation
Ingredients
/liter
Enzymatic digest of casein
17.0g
Enzymatic digest of animal tissue
3.0g
Sorbitol
10.0g
Bile salt No.3
1.5g
Sodium chloride
5.0g
Neutral red
0.03g
Crystal violet
0.001g
Agar
15.0g
pH 7.1±0.2 at 25°C
Preparation
Weigh 51.5g of this product, add 1L of distilled water or deionized water, stir, heat and boil until completely dissolved, dispense into Erlenmeyer flasks, and sterilize at 121℃ for 15min. Melt the sterilized culture medium and cool it to about 45℃, add 1 tube of supporting reagent (SR0240) (0.25mg potassium tellurite and 0.005mg Cefixime) to every 100mL of basal culture medium, mix and pour into the plate.
Quality Control
Cultural characteristics observed after incubation at 35-37°C for 18-24hours
Quality control strains
Growth
Colony color
Escherichia coli ATCC25922
PR≥0.7
pale pink to red
Escherichia coli 0157:H7 NCTC12900
PR≥0.7
colorless
Staphylococcus aureus ATCC 25923
Total inhibition
–
Sorage and Shelf Life
Keep container tightly closed, store in a cool, dry place, away from bright light. Storage period of 3 years.
Precautions
1. When weighing the dehydrated medium, please wear masks to avoid causing respiratory system discomfort
2. Keep container tightly closed after using to prevent clumping.
Waste Disposal
Microbiological contamination was disposed by autoclaving at 121°C for 30 minutes.
Document
Intended Use For the isolation and differentiation of sorbitol-negative Escherichia coli serotype O157 from food and animal feed and other materials Principle and Interpretation Enzymatic ……