{"product_id":"streptavidinst-ii-resin-4ff","title":"Streptavidin(ST II) Resin 4FF","description":"\u003cstyle\u003e\n\/* =========================\n   Biofargo Product Page SOP\n========================== *\/\n\n.biofargo-wrap{\n  max-width:1000px;\n  margin:0 auto;\n  padding:10px;\n  font-family:'Segoe UI', Roboto, Helvetica, Arial, sans-serif;\n  color:#333;\n  line-height:1.7;\n}\n\n.biofargo-wrap .biofargo-sec{\n  margin-bottom:32px;\n}\n\n.biofargo-wrap .biofargo-h2{\n  border-left:4px solid #0056b3;\n  padding-left:15px;\n  color:#0056b3;\n  font-size:20px;\n  text-transform:uppercase;\n  margin:0 0 15px 0;\n}\n\n.biofargo-wrap .biofargo-card{\n  background:#f9f9f9;\n  padding:18px;\n  border-radius:10px;\n  border:1px solid #eee;\n}\n\n.biofargo-wrap ul{\n  padding-left:22px;\n}\n\n.biofargo-wrap li{\n  margin:8px 0;\n}\n\n\/* =========================\n   Table Style\n========================== *\/\n\n.biofargo-wrap .biofargo-table-wrap{\n  overflow-x:auto;\n  border:1px solid #eee;\n  border-radius:10px;\n  padding:6px;\n  background:#fff;\n}\n\n.biofargo-wrap table.biofargo-table{\n  width:100%;\n  border-collapse:collapse;\n  font-size:14px;\n}\n\n.biofargo-wrap table.biofargo-table th,\n.biofargo-wrap table.biofargo-table td{\n  border:1px solid #ddd;\n  padding:12px;\n  vertical-align:middle;\n  word-break:break-word;\n}\n\n.biofargo-wrap table.biofargo-table thead th{\n  background:#f2f2f2;\n  font-weight:700;\n}\n\n.biofargo-wrap table.biofargo-table tbody td:first-child{\n  font-weight:700;\n  background:#f8f9fa;\n}\n\n.biofargo-wrap table.w-640{\n  min-width:640px;\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"biofargo-wrap\"\u003e\n\n\u003c!-- Description --\u003e\n\u003cdiv class=\"biofargo-sec\"\u003e\n\u003ch2 class=\"biofargo-h2\"\u003eDescription\u003c\/h2\u003e\n\n\u003cdiv class=\"biofargo-card\"\u003e\n\n\u003cp\u003e\nStrep Tag II is a small tag with 8 amino acids (WSHPQFEK), which is only about 1.06 kDa due to its small size and does not affect the structure and function of the fused protein. These mild purification parameters can maintain the biological activity of the protein and yield over 99% purity through only one step of extraction. Among numerous affinity tags, although Strep-tag II appeared later than Flag, c-Myc, and His tags, it has been widely used due to its high affinity, high single-step purification purity (better than His tags), mild purification conditions, and fusion of both ends of the protein.\n\u003c\/p\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Specifications --\u003e\n\u003cdiv class=\"biofargo-sec\"\u003e\n\u003ch2 class=\"biofargo-h2\"\u003eSpecifications\u003c\/h2\u003e\n\n\u003cdiv class=\"biofargo-table-wrap\"\u003e\n\n\u003ctable class=\"biofargo-table w-640\"\u003e\n\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"width:40%\"\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eSubstrate\u003c\/td\u003e\n\u003ctd\u003eHighly cross-linked 4% agarose\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eAverage Particle Size\u003c\/td\u003e\n\u003ctd\u003e0\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eParticle Size\u003c\/td\u003e\n\u003ctd\u003e45 μm~165 μm\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eProtein Binding Ability\u003c\/td\u003e\n\u003ctd\u003e≈4 mg Twin Strep-tag II protein\/mL filler\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eMaximum Flow Rate\u003c\/td\u003e\n\u003ctd\u003e300 cm\/h\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003ePressurization\u003c\/td\u003e\n\u003ctd\u003e0.3 MPa, 3 bar\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eStorage Buffer\u003c\/td\u003e\n\u003ctd\u003e1X PBS solution containing 20% ethanol\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eComponent\u003c\/td\u003e\n\u003ctd\u003e1 mL\/5 mL\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\u003ctd\u003eStorage\u003c\/td\u003e\n\u003ctd\u003e2~8°C, do not freeze\u003c\/td\u003e\n\u003c\/tr\u003e\n\n\u003c\/tbody\u003e\n\n\u003c\/table\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- Features --\u003e\n\u003cdiv class=\"biofargo-sec\"\u003e\n\u003ch2 class=\"biofargo-h2\"\u003eFeatures\u003c\/h2\u003e\n\n\u003cul\u003e\n\n\u003cli\u003eStrep-Tag II–specific purification for recombinant protein workflows.\u003c\/li\u003e\n\n\u003cli\u003eBroad expression-system compatibility, including rod-shaped viruses, mammalian cells, and yeast.\u003c\/li\u003e\n\n\u003cli\u003eCold-chain stability for routine lab handling (2–8 °C storage; avoid freezing).\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\n\u003c!-- Applications --\u003e\n\u003cdiv class=\"biofargo-sec\"\u003e\n\u003ch2 class=\"biofargo-h2\"\u003eApplications\u003c\/h2\u003e\n\n\u003cdiv class=\"biofargo-card\" style=\"background:#fff;\"\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\nAffinity purification of Strep-Tag II–labeled recombinant proteins from diverse expression sources (e.g., rod-shaped viruses, mammalian cells, yeast).\n\u003c\/li\u003e\n\n\u003cli\u003e\nPreparation of purified tagged proteins for downstream functional assays, interaction studies, or analytical characterization (typical downstream uses for Strep-tag purification workflows).\n\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"KleanAB","offers":[{"title":"1ml","offer_id":52400875667637,"sku":"P310130-1ml","price":98.0,"currency_code":"USD","in_stock":true},{"title":"5ml","offer_id":52400875700405,"sku":"P310130-5ml","price":427.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/5312\/2997\/files\/biofargo.jpg?v=1761012618","url":"https:\/\/biofargo.com\/products\/streptavidinst-ii-resin-4ff","provider":"Biofargo","version":"1.0","type":"link"}