DBCO-PEG4-NHS Ester is a click chemistry PEG reagent containing NHS ester that is able to react specifically and efficiently with primary amines (e.g. the side chain of lysine residues or aminosilane-coated surfaces) at neutral or slightly basic condition to form a covalent bond. The hydrophilic PEG spacer arm improves water solubility and provides a long and flexible connection that minimizes steric hindrance involved with ligation. DBCO is commonly used for copper-free Click Chemistry reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
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DBCO-PEG4-NHS Ester is a click chemistry PEG reagent containing NHS ester that is able to react specifically and efficiently with primary amines (e.g. the side chain of lysine residues or aminosilane-coated surfaces) at neutral or slightly basic condition to form a covalent bond. The hydrophilic PEG spacer arm improves water solubility and provides a long and flexible connection that minimizes steric hindrance involved with ligation. DBCO is commonly used for copper-free Click Chemistry reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
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029999P1 Xylose Lysine Desoxycholate Agar
Product Info
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Product Info
Introduction
Usages: For selective isolation of Gram-negative bacteria, especially for Shigella and Salmonella.
Principle: Yeast extract powder provide nitrogen, vitamins, growth factors; sodium chloride to maintain osmotic equilibrium ferric ammonium citrate of iron salts to produce a black iron sulfide; agar as medium coagulant; phenol red as pH indicator.
Formulation（per liter）: Xylose 3.50g L-Lysine 5.00g Lactose 7.50g Sucrose 7.50 g Sodium Chloride 5.00 g Yeast Extract 3.00g Sodium Desoxycholate 2.50g Sodium Thiosulphate 6.80g Fe-Ammonium Citrate 0.80g Phenol Red 0.08g Agar 13.50 Final PH 7.4±0.2
How to use: 1.Suspend 55.2g in 1Lof distilled or deionized water. Heat with frequent agitation and boil to completely dissolve the powder. Do not autoclave ,cool to 50℃ and pour into sterile petri dishes. 2.Dilluted and treated samples.
Quality control: Quality control strains were inoculated ,and cultured at 36 ± 1 ℃ for 24h ,results show as follows: strain name strain code growth feature Arizona bacteria CMCC (B) 47001 good black colonies Salmonella typhimurium CMCC (B) 50115 good black colonies Streptococcus faecalis CMCC32223 prohibited —
Storage: Store in a dark, cool and dry place, tighten the cap immediately after use. Storage period of three years.
DBCO-PEG4-DBCO is a homobifunctional PEG linker containing two DBCO groups and a hydrophilic PEG spacer arm. DBCO will react with azide-bearing compounds or biomolecules to form a stable triazole linkage without copper catalyst. The hydrophilic PEG spacer arm can increase water solubility and membrane permability. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
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DBCO-PEG4-DBCO is a homobifunctional PEG linker containing two DBCO groups and a hydrophilic PEG spacer arm. DBCO will react with azide-bearing compounds or biomolecules to form a stable triazole linkage without copper catalyst. The hydrophilic PEG spacer arm can increase water solubility and membrane permability. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
The ssDNA Quantification Kit is developed for single stranded DNA quantification. The kit includes ssDNA Dye, ssDNA Dilution Buffer, and two ssDNA Standards. Simply dilute the ssDNA Dye with the ssDNA Dilution Buffer, add DNA sample (volume from 1-20 μL), then read the concentration using the Qubit® Fluorometer. The assay is accurate for DNA concentrations from 50 pg/µL to 200 ng/µL based on the line corresponding of the data to standards.
Our kit detects ssDNA by using fluorescent dye that enables sensitive single stranded DNA quantification , including ssDNA viruses, synthetic ssDNA, first-strand cDNA synthesis, denatured DNA, and bisulfate-converted DNA etc. ssDNA quantification is essential for the study of the biological process involves ssDNA.
Features
Optimized for use with the Qubit® Fluorometer
Uses the Qubit® ssDNA assay setting
Linear range: 1-200 ng ssDNA
Cost saving by more than 50%
A series of input ssDNA (200, 400, 600, 800, 1000, and 1200 ng) was used.
The performance of the BioDynami ssDNA Quantification Kit is nearly identical to that of Thermo Fisher’s Qubit ssDNA kit (figure below).
Comparison of BioDynami ssDNA Quantification Kit with Thermo Fisher kit.
Common contaminants such as salts, solvents, or detergents are well tolerated in the assay (Table 1).
Contaminants has been tested in BioDynami ssDNA Kit.
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The ssDNA Quantification Kit is developed for single stranded DNA quantification. The kit includes ssDNA Dye, ssDNA Dilution Buffer, and two ssDNA Standards. Simply dilute the ssDNA Dye with the ssDNA Dilution Buffer, add DNA sample (volume from 1-20 μL), then read the concentration using the Qubit® Fluorometer. The assay is accurate for DNA concentrations from 50 pg/µL to 200 ng/µL based on the line corresponding of the data to standards.
