| Description | Storage buffer: 10mM Tris HCl, 5mM EDTA, 0.03% Bromophenol Blue, 0.03% Xylene Cyanol, 30% Glycerol, pH7.6Product IntroductionThis product is composed of 9 linear double stranded DNA fragments, stored in a 1xLoading Buffer, with dense bands that require high concentration gel and low voltage Storage buffer: 10mM Tris HCl, 5mM EDTA, 0.03% Bromophenol Blue, 0.03% Xylene Cyanol, 30% Glycerol, pH7.6Product IntroductionThis product is composed of 9 linear double stranded DNA fragments, stored in a 1xLoading Buffer, with dense bands that require high concentration gel and low voltage electrophoresis. It is suitable for accurately confirming the size of DNA fragments. The size range is 50-500bp, which are 50bp, 100bp, 150bp, 200bp, 250bp, 300bp, 350bp, 400bp, and 500bp respectively; 250 bp is the bright band, with a concentration 2.5 times that of other bands; In the 5 ul product, each strip contains about 40 ng, and the highlight strip contains about 100 ng.Usage suggestions1. It is recommended to sample 5 ul and increase the sample size appropriately for wide adhesive holes.2. It is recommended to use 2.5-3.5% Agarose or 5% PAGE gel, voltage 4-10 v/cm, and 0.5xTBE buffer for electrophoresis. Pay attention to replacing the electrophoresis buffer in time and using the newly prepared gel to achieve ideal results.3. Stain with EB or other nucleic acid dyes, and observe the electrophoretic bands under UV light.matters needing attention1. This product has been saved in a 1xLoading Buffer and can be directly used for electrophoresis. It is easy to use and the electrophoresis image is clear.2. When using agarose gel containing EB for electrophoretic detection, the bromophenol blue band can be electrophoretic to about 2/3 of the distance, otherwise the small segment will become dark because EB is separated from DNA.3. The accompanying 5xLoading buffer can be used for sample detection.5x Loading Buffer components:10 mM Tris-HCl，5 mM EDTA， pH7.6， 0.03% bromophenol blue, 0.03% xylene blue, 30% glycerol Product componentD745352Component100 T500TStorageD745352ADNA Ladder (50-500bp)500 µL5× 500 µL-20℃. Avoid freeze/thaw cycle.D745352B5xLoading buffer1 mL5× 1 mL-20℃. Avoid freeze/thaw cycle... Read More | Inquire | Usually used industrially for the resolution of chiral compounds and the transesterification production of biodiesel | Inquire | Purity:>95%, by SDS-PAGE visualized with Coomassie® Blue Staining. Description： 100B, previously called S100 beta, belongs to the S100 family within the EF-hand superfamily of Ca2+ binding proteins. S100 proteins contain two EF-hand motifs that differ in affinity, separated by a hingePurity:>95%, by SDS-PAGE visualized with Coomassie® Blue Staining. Description： 100B, previously called S100 beta, belongs to the S100 family within the EF-hand superfamily of Ca2+ binding proteins. S100 proteins contain two EF-hand motifs that differ in affinity, separated by a hinge region with a hydrophobic cleft that is exposed upon Ca2+ binding. S100B is a 91 amino acid (aa) protein, after removal of the initial methionine, and is found as homodimers of 10.4 kDa monomers. Human S100B shares 99%, 98%, 100%, 99% and 97% aa sequence identity with mouse, rat, rabbit, equine and bovine S100B, respectively. Within the S100 family, human S100B shows the highest aa identity (59%) with S100A1. S100B is expressed primarily by astrocytes and oligodendrocytes in the central nervous system, and by Schwann cells in the peripheral nervous system. Ca2+-bound S100B interacts in vitro with at least 20 cytoplasmic proteins, including several structural molecules such as tubulin and GFAP. It can inhibit the phosphorylation of these kinase substrates and others such as tau and neuromodulin. Astrocytes can secrete S100B, which then acts in a cytokine-like manner. Nanomolar concentrations of S100B are secreted constitutively, promote proliferation, and are neurotrophic and anti-apoptotic. Blood levels of S100B reflect extracellular concentrations within the nervous system, and are elevated in Down’s syndrome, Alzheimer’s disease and Tourette’s syndrome, metabolic stress, acute brain injury and brain tumors. Micromolar concentrations of S100B can be destructive and pro-apoptotic; they induce the expression of iNOS, COX-2, IL-1, IL‑6 and TNF-alpha by microglia, astrocytes or neurons. Most extracellular actions of S100B can be mediated by RAGE (receptor for advanced glycation end products), which is also a receptor for other S100 proteins... Read More |