Methyltetrazine-PEG5-DBCO is a TCO reactive reagent with a DBCO group and water-soluble PEG spacer. This reagent can be used to convert azido-containing peptides or proteins into tetrazine-modified peptides or protein without catalyst or axillary reagents. DBCO is commonly used for copper-free Click Chemistry reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Methyltetrazine-PEG5-DBCO is a TCO reactive reagent with a DBCO group and water-soluble PEG spacer. This reagent can be used to convert azido-containing peptides or proteins into tetrazine-modified peptides or protein without catalyst or axillary reagents. DBCO is commonly used for copper-free Click Chemistry reactions. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
The NGS DNA Fragmentation & Library Prep Kit (illumina and MGI Platforms) was developed for construction of high quality libraries for next generation sequencing. The kit uses intact genomic DNA (EDTA-free DNA or DNA resuspended in TE buffer) as input DNA without an additional DNA fragmentation step. Our technology provides a fast and simple workflow. DNA libraries can be generated around 2 hours with only 10 min hands-on time. Library multiplexing is possible.
NGS DNA Fragmentation & Library Prep Kit Workflow
The incorporation of DNA fragmentation in the kit makes it possible to directly use intact genomic DNA as input DNA without the need of mechanical DNA shearing or enzymatic DNA fragmentation. The NGS DNA Fragmentation & Library Prep Kit does not generate sequencing bias as compared to library using mechanical sheared DNA as input. Sequence coverage is also consistent between enzymatic shearing and mechanical shearing. The library size is inversely correlated with the incubation time of step 1 at 20°C.
Three index types are available for the kit of the illumina platform:
Non-index (Cat.# 30026): Libraries do not have index.
Index (Cat.# 30028): Each of the index primers contains a unique index sequence of 6 bases. Library multiplexing for 48 samples is possible. Index information can be downloaded here.
Unique dual index (Cat.# 30030): Library multiplexing for 96 samples is possible. With the unique features of our 4-Base Difference Index System, the index sequence is 8-base long and each index has 4 bases different from others. Our unique dual index primers effectively identify sequencing errors such as index hopping, mis-assignment of reads, and de-multiplexing errors etc. The unique dual index primers set consists of 96 pre-mixed unique pairs of index primers. Index information can be downloaded here.
Indexes are available for the MGI platform kits (Cat.# 34028).
Kit features:
Library conversion efficiency: 100 ng, 300 ng and 500 ng of intact genomic DNA were used as input.
The library size is inversely correlated with the incubation time of step 1 at 20°C.
NGS data comparison: enzymatic shearing versus mechanical shearing
Enzymatic shearing
• DNA shearing and library prep: BioDynami NGS DNA Fragmentation & Library Prep Kit
Mechanical shearing
• DNA shearing: Covaris sonication
• Library prep: BioDynami NGS DNA Library Prep Kit.
The NGS DNA Fragmentation & Library Prep Kit (illumina and MGI Platforms) was developed for construction of high quality libraries for next generation sequencing. The kit uses intact genomic DNA (EDTA-free DNA or DNA resuspended in TE buffer) as input DNA without an additional DNA fragmentation step. Our technology provides a fast and simple workflow. DNA libraries can be generated around 2 hours with only 10 min hands-on time. Library multiplexing is possible.
Used for the selective isolation and culture of Listeria monocytogenes.
Columbia Blood Agar Base provide carbon and nitrogen sources, vitamins and growth factors，maintains balanced osmotic pressure; Listeria hydrolyzes aesculin and reacts with iron ions to form black 6,7-dihydroxycoumarin; lithium chloride and other antibiotics can inhibit Gram-negative bacteria and most Gram-positive bacteria; agar is the coagulant of the culture medium.
| Ingredients | /liter |
| Columbia blood agar base | 39.0 g |
| Aesculin | 1.0 g |
| Ferric ammonium citrate | 0.5 g |
| Lithium chloride | 15.0 g |
| pH7.0±0.2 at 25°C | |
Weigh 55.5 g of this product, add 1000 mL of distilled water or deionized water, stir, heat and boil until completely dissolved, divide into Erlenmeyer bottles, sterilize at 121℃ for 15 min. Cool to about 50℃, add 1 bottle of SR0500 supporting reagent A and 1 bottle of B per 100 mL, mix well and set aside.
The following quality control strains were inoculated and cultured at 35-37℃ for 24h. The results are as follows:
| Quality control strains | Growth |
| Listeria monocytogenes ATCC19115 | Gray-green colonies with a black depression in the center and black surrounding |
| Enterococcus faecalis ATCC29212 | – |
| Escherichia coli ATCC25922 | – |
2-30℃，Keep container tightly closed, avoid direct sunlight.
Use before expiry date on the label.
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.
Microbiological contamination was disposed by autoclaving at 121°C for 30 minutes.
Intended Use Used for the selective isolation and culture of Listeria monocytogenes. Principle and Interpretation Columbia Blood Agar Base provide carbon and nitrogen sources, vitamins and……
Description
The PM2610/PM2611 ExcelBand™ Enhanced 3-color High Range Protein Marker is a ready to use three-color protein standard with 12 pre-stained proteins covering a wide range of molecular weights from 10 to 245 kDa in Tris-Glycine buffer (9 to 235 kDa in BisTris (MOPS) buffer and 10-235 kDa in Bis-Tris (MES) buffer). Proteins are covalently coupled with different chromophores for easy identification of bands, with two reference proteins carrying enhanced intensity corresponding to a green at 25 kDa and red at 75 kDa, respectively, as separated on SDS-PAGE (Tris-Glycine buffer). The ExcelBand™ Enhanced 3-color High Range Protein Marker is designed for monitoring protein separation during SDS-polyacrylamide gel electrophoresis, verification of Western transfer efficiency on membranes (PVDF, nylon, or nitrocellulose) and for approximating the size of proteins.
Features
Contents
Approximately 0.2~0.6 mg/ml of each protein in the buffer (20 mM Tris-phosphate (pH 7.5 at 25°C), 2 % SDS, 3.6 M Urea, and 15 % (v/v) Glycerol).
Quality Control
Under suggested conditions, the PM2610/PM2611 Enhanced 3-color High Range Protein Marker resolves 12 major bands in 15% SDS-PAGE (Tris-Glycine buffer, MOPS, and MES buffer) and after Western blotting to nitrocellulose membrane.
Storage
4°C for 3 months
-20°C for long term storage
The PM2610/PM2611 ExcelBand™ Enhanced 3-color High Range Protein Marker is a ready to use three-color protein standard with 12 pre-stained proteins covering a wide range of molecular weights from 10 to 245 kDa in Tris-Glycine buffer (9 to 235 kDa in BisTris (MOPS) buffer and 10-235 kDa in Bis-Tris (MES) buffer). Proteins are covalently coupled with different chromophores for easy identification of bands, with two reference proteins carrying enhanced intensity corresponding to a green at 25 kDa and red at 75 kDa, respectively, as separated on SDS-PAGE (Tris-Glycine buffer). The ExcelBand™ Enhanced 3-color High Range Protein Marker is designed for monitoring protein separation during SDS-polyacrylamide gel electrophoresis, verification of Western transfer efficiency on membranes (PVDF, nylon, or nitrocellulose) and for approximating the size of proteins.
