商品介绍
Catalogue number
ENZ-073
Synonyms
DNA topoisomerase 1, EC 5.99.1.2, DNA topoisomerase I, TOP1, Scl-70.
Introduction
TOP1 is an important nuclear enzyme that interconverts supercoiled DNA to the necessary topological conformations for standard DNA replication and transcription. TOP1 is the target antigen for TOP1 autoantibodies. TOP1 antibodies are a specific marker in scleroderma patients (specificity 98-100%) and are related with the existence of diffuse skin involvement and pulmonary fibrosis. In human tissues top1 enzyme is primarily synthesized as a protein with a molecular weight of 100-kDa. Most of this precursor is then proteolytically processed to a 70-kDa size, from which the TOP1 antigen has derived its name.
Description
Recombinant TOP1 70kDa protein is an enzyme fragment having a molecular mass of 72KDa (pH 9.4). TOP1 70kDa protein is fused to a hexa-histidine purification tag.
Source
Sf9 insect cells.
Formulation
TOP1 70kDa is supplied in20mM HEPES buffer pH-8.0, 500mM NaCl, and 20% glycerol.
Immunological functions
1.Binds IgG-type human auto-antibodies.
2. Standard ELISA test (checkerboard analysis of positive/negative samples) and immunodot test with positive/negative samples.
Applications
Western blot with anti TOP1 70kDa autoantibody positive sample or monoclonal anti-hexa-His-tag antibody.
Coating concentration
0.5-0.8 µg/ml (depending on the type of ELISA plate and coating buffer). Suitable for labeling of functional groups.
Purity
Greater than 95% as determined by SDS-PAGE.
Stability
Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time.Avoid multiple freeze-thaw cycles.
Safety Data Sheet
Usage
Prospec"s products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
品牌介绍
ProSpec-Tany TechnoGene Ltd.公司创立人Dr. Tanchum (Tany) Amarant 主要致力于蛋白生物化学方面的研究工作，1947年出生于以色列。1991-1997创建ReProGen 公司，从事细胞因子和趋化因子的大量生产及纯化；1997-2000创建ProSpec-TechnoGene，主要生产用于生命科学研究的各种重组蛋白及相关抗体。拥有专利United States Patent 5434135。
ProSpec is an evolving biotech company providing highly purified proteins worldwide which serve the research community with cytokine-related products for cancer, apoptosis, development, endocrinology, immunology, neuroscience, proteases, and stem cell research.
Among our proteins are Interferons, Interleukins, Bone Morphogenic Proteins, Tumor Necrosis factors, Leptins, Stem Cell factors, Prolactins, Chemokines, Antibodies, Peptides, Enzymes, Viral Antigens, various growth factors such as: Platelet Derived, Epidermal, Insulin Like, Nerve, Connective Tissue, Vascular Endothelial, Fibroblast and more.....
Our research team and scientists have been able to assemble more than 1700 recombinant proteins, peptides and antibodies for your research needs. The proteins are rigorously tested to meet the research and development demand for excellent quality, uncompromising biological activity at competitive prices.
ProSpec has established sterling reputation among the scientific community, a reputation built on innovative products, customer service and attention to detail. Our reputation for quality is an essential factor in achieving a favorable position in the market place and the benefits associated with manufacturing top quality products.
