{"title":"Protein Research \u0026 Quality Control","description":"\u003cp\u003eExplore our comprehensive range of protein research and quality control reagents, designed to support every stage of protein analysis; from expression and purification to quantification and characterization. Our portfolio includes protein assay kits, electrophoresis reagents, Western blot detection systems, protein standards, and purity assessment tools trusted by researchers worldwide.\u003c\/p\u003e\n\u003cp\u003eWhether you're working in drug discovery, biopharmaceutical development, or academic research, our products deliver the sensitivity, reproducibility, and traceability required for both exploratory and regulated environments. All reagents are rigorously validated to ensure consistent performance across sample types, helping your laboratory achieve reliable results with confidence.\u003c\/p\u003e","products":[{"product_id":"bsai-restriction-enzyme-gmp-grade","title":"BsaI Restriction Enzyme, GMP Grade","description":"","brand":"Cleavion","offers":[{"title":"20000 U","offer_id":57188440605047,"sku":"CLV-0151","price":617.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/7097\/6119\/files\/CLV-0151-0-cleavion-product.png?v=1781696384"},{"product_id":"tev-protease-with-his-tag","title":"TEV Protease (with His-Tag)","description":"TEV Protease (with His-tag) is derived from the tobacco etch virus and has been genetically engineered for recombinant expression in Escherichia coli. It retains the natural enzymatic activity of TEV protease while exhibiting improved tolerance to variations in pH and temperature. TEV Protease is a highly specific cysteine protease, widely utilized for the removal of affinity tags from fusion proteins. It precisely recognizes the seven-amino-acid sequence EXXYXQ↓ (G\/S) and cleaves between the glutamine and glycine\/serine residues. The most commonly recognized sequence is Glu-Asn-Leu-Tyr-Phe-Gln↓Gly. The inclusion of a His-tag at the N-terminus of TEV Protease allows for its efficient removal via Ni-affinity chromatography following digestion, thereby simplifying the purification of the target protein.","brand":"Cleavion","offers":[{"title":"1000 U","offer_id":57188442669431,"sku":"CLV-0222","price":81.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/7097\/6119\/files\/CLV-0222-0-cleavion-product.png?v=1781696415"},{"product_id":"color-prestained-protein-marker-10-180-kda","title":"Color Prestained Protein Marker (10~180 kDa)","description":"Color Prestained Protein Marker (10~180 kDa) is a tri-color pre-stained ready-to-use protein molecular weight standard that contains 10 known molecular weight pre-stained standard proteins with a molecular weight range of 10~180 kDa. After SDS-PAGE gel electrophoresis or Western blot transfer, clear 10 colored protein bands can be observed, with the 70 kDa band appearing red, the 10 kDa band appearing green, and the remaining 8 bands appearing blue. The concentration of each protein band is approximately 0.1~0.4 mg\/ml.","brand":"Cleavion","offers":[{"title":"250 µL","offer_id":57188442866039,"sku":"CLV-0223","price":63.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/7097\/6119\/files\/CLV-0223-0-cleavion-product.png?v=1781696415"},{"product_id":"color-prestained-protein-marker-10-180-kda-1","title":"Color Prestained Protein Marker (10~180 kDa)","description":"Color Prestained Protein Marker (10~180 kDa) is a tri-color pre-stained ready-to-use protein molecular weight standard that contains 10 known molecular weight pre-stained standard proteins with a molecular weight range of 10~180 kDa. After SDS-PAGE gel electrophoresis or Western blot transfer, clear 10 colored protein bands can be observed, with the 70 kDa band appearing red, the 10 kDa band appearing green, and the remaining 8 bands appearing blue. The concentration of each protein band is approximately 0.1~0.4 mg\/ml.","brand":"Cleavion","offers":[{"title":"5x 250 µL","offer_id":57188442997111,"sku":"CLV-0224","price":125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/7097\/6119\/files\/CLV-0224-0-cleavion-product.png?v=1781696415"},{"product_id":"color-prestained-protein-marker-8-250-kda","title":"Color Prestained Protein Marker (8~250 kDa)","description":"Color Prestained Protein Marker (8~250 kDa) is a tri-color pre-stained ready-to-use protein molecular weight standard that contains 11 known molecular weight pre-stained standard proteins with a molecular weight range of 8~250 kDa. After SDS-PAGE gel electrophoresis or Western blot transfer, clear 11 colored protein bands can be observed, with the 72 kDa band appearing orange-red, the 8 kDa band appearing green, and the remaining 9 bands appearing blue.","brand":"Cleavion","offers":[{"title":"250 µL","offer_id":57188443128183,"sku":"CLV-0225","price":66.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/7097\/6119\/files\/CLV-0225-0-cleavion-product.png?v=1781696416"},{"product_id":"color-prestained-protein-marker-8-250-kda-1","title":"Color Prestained Protein Marker (8~250 kDa)","description":"Color Prestained Protein Marker (8~250 kDa) is a tri-color pre-stained ready-to-use protein molecular weight standard that contains 11 known molecular weight pre-stained standard proteins with a molecular weight range of 8~250 kDa. After SDS-PAGE gel electrophoresis or Western blot transfer, clear 11 colored protein bands can be observed, with the 72 kDa band appearing orange-red, the 8 kDa band appearing green, and the remaining 9 bands appearing blue.","brand":"Cleavion","offers":[{"title":"5x 250 µL","offer_id":57188443292023,"sku":"CLV-0226","price":137.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/7097\/6119\/files\/CLV-0226-0-cleavion-product.png?v=1781696417"},{"product_id":"benzonase-elisa-kit","title":"Benzonase ELISA Kit","description":"This assay employs the quantitative sandwich enzyme immunoassay technique. A monoclonal antibody specific for Benzonase has been pre- coated onto a microplate. Standards and samples are pipetted into the wells and any Benzonase present is bound by the immobilized antibody. After washing away any unbound substances, an enzyme-linked monoclonal antibody specific for Benzonase is added to the wells. Following a wash to remove any unbound antibody-enzyme reagent, a substrate solution is added to the wells and color develops in proportion to the amount of Benzonase bound in the initial step. The color development is stopped and the intensity of the color is measured. And the residual degree of Benzonase in the sample is measured. Detection range: 0.094~6 ng\/ml Quantification limit: 0.094 ng\/ml Detection limit: 0.019 ng\/ml","brand":"Cleavion","offers":[{"title":"96 Tests","offer_id":57188443488631,"sku":"CLV-0267","price":466.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/7097\/6119\/files\/CLV-0267-0-cleavion-product.png?v=1781696418"},{"product_id":"bsai-elisa-kit","title":"BsaI ELISA Kit","description":"This assay employs the quantitative sandwich enzyme immunoassay technique. A monoclonal antibody specific for BsaI has been pre-coated onto a microplate. 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Detection range: 0.188~12 ng\/ml Quantification limit: 0.188 ng\/ml Detection limit: 0.094 ng\/ml","brand":"Cleavion","offers":[{"title":"96 Tests","offer_id":57188443619703,"sku":"CLV-0268","price":466.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/7097\/6119\/files\/CLV-0268-0-cleavion-product.png?v=1781696419"},{"product_id":"bsmbi-elisa-kit","title":"BsmBI ELISA Kit","description":"This assay employs the quantitative sandwich enzyme immunoassay technique. A monoclonal antibody specific for BsmBI has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and any BsmBI present is bound by the immobilized antibody. After washing away any unbound substances, an enzyme-linked monoclonal antibody specific for BsmBI is added to the wells. Following a wash to remove any unbound antibody-enzyme reagent, a substrate solution is added to the wells and color develops in proportion to the amount of BsmBI bound in the initial step. The color development is stopped and the intensity of the color is measured. And the residual degree of BsmBI in the sample is measured. Detection range: 0.156~10 ng\/ml Quantification limit: 0.156 ng\/ml Detection limit: 0.07 ng\/ml","brand":"Cleavion","offers":[{"title":"96 Tests","offer_id":57188443783543,"sku":"CLV-0269","price":466.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/7097\/6119\/files\/CLV-0269-0-cleavion-product.png?v=1781696420"},{"product_id":"collagenase-ii","title":"Collagenase II","description":"Collagenase products are purified from Clostridium histolyticum, which is a protease with specificity for the bond between a neutral amino acid (X) and glycine in the sequence Pro-XGly-Pro. This sequence is found in high frequency in collagen. Collagenase is unique among proteases in its ability to degrade the triplehelical native collagen fibrils commonly found in connective tissue. This product is Type II collagenase with ≥125 U\/mg solid, suitable for dissociation of tissues and cells in heart, thyroid, salivary gland, liver, bone, cartilage, etc.","brand":"Cleavion","offers":[{"title":"100 mg","offer_id":57188443816311,"sku":"CLV-0229","price":73.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/7097\/6119\/files\/CLV-0229-0-cleavion-product.png?v=1781696420"},{"product_id":"xbai-elisa-kit","title":"XbaI ELISA Kit","description":"This assay employs the quantitative sandwich enzyme immunoassay technique. A monoclonal antibody specific for XbaI has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and any XbaI present is bound by the immobilized antibody. After washing away any unbound substances, an enzyme-linked monoclonal antibody specific for XbaI is added to the wells. Following a wash to remove any unbound antibody-enzyme reagent, a substrate solution is added to the wells and color develops in proportion to the amount of XbaI bound in the initial step. The color development is stopped and the intensity of the color is measured. And the residual degree of XbaI in the sample is measured. Detection range: 0.156~10 ng\/ml Quantification limit: 0.188 ng\/ml Detection limit: 0.094 ng\/ml","brand":"Cleavion","offers":[{"title":"96 Tests","offer_id":57188443947383,"sku":"CLV-0270","price":466.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/7097\/6119\/files\/CLV-0270-0-cleavion-product.png?v=1781696420"},{"product_id":"collagenase-ii-1","title":"Collagenase II","description":"Collagenase products are purified from Clostridium histolyticum, which is a protease with specificity for the bond between a neutral amino acid (X) and glycine in the sequence Pro-XGly-Pro. This sequence is found in high frequency in collagen. Collagenase is unique among proteases in its ability to degrade the triplehelical native collagen fibrils commonly found in connective tissue. 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Following a wash to remove any unbound antibody- enzyme reagent, a substrate solution is added to the wells and color develops in proportion to the amount of XhoI bound in the initial step. The color development is stopped and the intensity of the color is measured. And the residual degree of XhoI in the sample is measured. Detection range: 0.125~4 ng\/ml Quantification limit: 0.125 ng\/ml Detection limit: 0.021 ng\/ml","brand":"Cleavion","offers":[{"title":"96 Tests","offer_id":57188444111223,"sku":"CLV-0271","price":466.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0991\/7097\/6119\/files\/CLV-0271-0-cleavion-product.png?v=1781696421"},{"product_id":"collagenase-iv","title":"Collagenase IV","description":"Collagenase products are purified from Clostridium histolyticum, which is a protease with specificity for the bond between a neutral amino acid (X) and glycine in the sequence Pro-XGly-Pro. 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