{"product_id":"top1-70kda-human-bhz11000085","title":"TOP1 70kDa Human","description":"\u003cdiv class=\"bhp-desc\"\u003e\n\u003ch3 style=\"color:#1a5c58;margin:12px 0 4px\"\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eDNA Topoisomerase-I 70kDa Recombinant Human\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bhp-desc\"\u003e\n\u003ch3 style=\"color:#1a5c58;margin:12px 0 4px\"\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eTOP1 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.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bhp-desc\"\u003e\n\u003ch3 style=\"color:#1a5c58;margin:12px 0 4px\"\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:0.92em\"\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:4px 8px;background:#e8f4f3;width:180px;font-weight:bold\"\u003ePurity\u003c\/th\u003e\n\u003ctd style=\"padding:4px 8px\"\u003eGreater than 95% as determined by SDS-PAGE.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:4px 8px;background:#e8f4f3;width:180px;font-weight:bold\"\u003eFormulation\u003c\/th\u003e\n\u003ctd style=\"padding:4px 8px\"\u003eTOP1 70kDa is supplied in 20mM HEPES buffer pH-8.0, 500mM NaCl, and 20% glycerol.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:4px 8px;background:#e8f4f3;width:180px;font-weight:bold\"\u003eStorage\u003c\/th\u003e\n\u003ctd style=\"padding:4px 8px\"\u003eStore 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.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"text-align:left;padding:4px 8px;background:#e8f4f3;width:180px;font-weight:bold\"\u003eExpression System\u003c\/th\u003e\n\u003ctd style=\"padding:4px 8px\"\u003eSf9 insect cells.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"ProSpec-Tany TechnoGene Ltd","offers":[{"title":"5µg","offer_id":53340118057325,"sku":"ENZ-073-5µg","price":60.0,"currency_code":"USD","in_stock":true},{"title":"20µg","offer_id":53340170912109,"sku":"ENZ-073-20µg","price":145.0,"currency_code":"USD","in_stock":true},{"title":"1mg","offer_id":53340170944877,"sku":"ENZ-073-1mg","price":3900.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/Prospecbio-top1-70kda-human-ENZ-073.png?v=1782158415","url":"https:\/\/www.ebiohippo.com\/products\/top1-70kda-human-bhz11000085","provider":"BioHippo","version":"1.0","type":"link"}