{"product_id":"recombinant-sars-cov-2-spike-rbd-protein-his-tag-animal-free-bhp13700127","title":"Recombinant SARS-CoV-2 Spike RBD Protein, His tag (Animal-Free)","description":"\u003ch2\u003eBackground\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eSARS-CoV-2 Spike RBD Protein\u003c\/strong\u003e is supplied as a recombinant protein reagent for \u003cstrong\u003eresearch use only\u003c\/strong\u003e. In RUO settings, recombinant proteins provide defined inputs for biochemical assays, interaction mapping, and assay development where control over protein identity and concentration supports reproducibility.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eAlso known as:\u003c\/strong\u003e SARS-CoV-2-Spike-RBD，RBD，SARS-CoV-2 Spike RBD，SARS-CoV-2 SP RBD，2019-nCoV SARS-CoV-2 Spike Protein (RBD).\u003c\/p\u003e\u003cp\u003eRecombinant SARS-CoV-2 Spike RBD Protein, His tag (Animal-Free), expressed in HEK 293 Cells\u003c\/p\u003e\u003cp\u003eEndotoxin: \u0026lt; 1 EU per µg of the protein as determined by the LAL method.\u003c\/p\u003e\u003ch2\u003eBiological significance and function\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eSARS-CoV-2 Spike RBD Protein\u003c\/strong\u003e is used in RUO research to interrogate molecular mechanisms, interaction networks, and pathway-linked phenotypes in experimental systems. This target is frequently investigated in research themes such as \u003cstrong\u003eInfectious Disease\u003c\/strong\u003e.\u003c\/p\u003e\u003ch2\u003eMolecular characteristics\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eMolecular characteristics:\u003c\/strong\u003e Protein domains, oligomeric state, and modification-sensitive surfaces can influence binding behavior and functional readouts in vitro. Where relevant, isoforms and PTMs may alter activity, stability, or interaction specificity.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMolecular weight:\u003c\/strong\u003e 26.5kDa\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtein length:\u003c\/strong\u003e The recombinant SARS-CoV-2 (COVID-19) Spike RBD protein consists of 229 amino acids and predicts a molecular mass of 26.5 kD.The apparent molecular mass of the human CD33 is approximately 32-35 kDa in SDS-PAGE under reducing conditions due to glycosylation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpression region:\u003c\/strong\u003e Amino acid sequence derived from SARS-CoV-2 (COVID-19) Spike RBD protein (YP_009724390.1, Arg319-Phe541) was expressed with a polyhistidine tag at the C-terminus.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity:\u003c\/strong\u003e \u0026gt; 95 % as determined by SDS-PAGE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiological activity:\u003c\/strong\u003e Testing in progress\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003ePost-translational considerations:\u003c\/strong\u003e Mammalian expression can support native-like folding, disulfide bond formation, and glycosylation—features that are often important for secreted proteins, receptors, and adhesion molecules.\u003c\/p\u003e\u003ch2\u003eExpression and purification strategy\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eExpression system:\u003c\/strong\u003e HEK 293 Cells. Expression system selection can influence folding state and PTM profile, which may affect binding or activity for PTM-sensitive targets.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTagging:\u003c\/strong\u003e His tag tags are commonly used to streamline purification and enable capture\/immobilization in interaction assays. Tag presence or removal can influence some binding measurements depending on assay design.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFormulation:\u003c\/strong\u003e Lyophilized from sterile PBS, pH 7.4.. Formulation and buffer composition can influence stability, aggregation propensity, and assay background in downstream biochemical experiments.\u003c\/p\u003e\u003ch2\u003eResearch interpretation\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eResearch interpretation:\u003c\/strong\u003e Recombinant protein reagents enable controlled experiments such as interaction reconstitution, quantitative calibration, and mechanistic perturbation with defined inputs. Interpretation is strengthened by pairing the primary readout with orthogonal markers that report on pathway state, localization, and complex assembly.\u003c\/p\u003e","brand":"Abbkine Scientific Co., Ltd.","offers":[{"title":"5 ug","offer_id":52997738594669,"sku":"PRP2039-5UG","price":69.0,"currency_code":"USD","in_stock":true},{"title":"20 ug","offer_id":52997738627437,"sku":"PRP2039-20UG","price":139.0,"currency_code":"USD","in_stock":true},{"title":"100 ug","offer_id":52997738660205,"sku":"PRP2039-100UG","price":499.0,"currency_code":"USD","in_stock":true},{"title":"1 mg","offer_id":52997738692973,"sku":"PRP2039-1MG","price":3819.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/PRP2039.jpg?v=1770191172","url":"https:\/\/www.ebiohippo.com\/products\/recombinant-sars-cov-2-spike-rbd-protein-his-tag-animal-free-bhp13700127","provider":"BioHippo","version":"1.0","type":"link"}