成人欧美一区二区三区,天天干天天操天天爱,免费特黄一级欧美大片在线看 ,亚洲中文字幕无码一区日日添

    <span id="alen4"></span>

    <li id="alen4"></li>
    

      
    
        
       
       
       
       
      Recombinant SARS-COV-2 Spike RBD(Delta B.1.617.2) Protein,   His Tag
       
      更多活動(dòng)更多優(yōu)惠，盡在翌圣商城》
       
       
       
      批量采購， 請(qǐng)點(diǎn)擊詢價(jià)
       
       
      產(chǎn)品說明書
                  
      FAQ
                  
      COA
                  
      已發(fā)表文獻(xiàn)
                  
       
      

       
      


      Coronaviruses are commonly comprised of four structural proteins: Spike protein (S), Envelope protein (E), Membrane protein (M) and Nucleocapsid protein (N) . The SARS-CoV-2 S protein is a glycoprotein that mediates membrane fusion and viral entry. The S protein is homotrimeric, with each ~180-kDa monomer consisting of two subunits, S1 and S2 . The RBD of SARS-CoV-2 binds a metallopeptidase, angiotensin-converting enzyme 2 (ACE-2). First detected in India in December 2020, the B.1.617.2, or Delta variant, is considered a Variant of Concern (VOC) as it contains several mutations in the RBD domain that potentially affect viral fitness and transmissibility: L452R and T478K.   
      


       
      


      產(chǎn)品性質(zhì)
      


      
	
		
      
			
			
      別名
      
			      		
			
			
      S protein RBD; S glycoprotein RBD; Spike protein RBD
      
			      		
		
      
		
      
			
			
      Accession
      
			      		
			
			
      QHD43416.1
      
			      		
		
      
		
      
			
			
      表達(dá)區(qū)間及表達(dá)系統(tǒng)
      
			      		
			
			
      Recombinant SARS-COV-2 Spike RBD (Delta B.1.617.2) Protein is expressed from Expi293 with His tag at the C-terminal. It contains Arg319-Phe541(L452R, T478K). 
      
			      		
		
      
		
      
			
			
      分子量
      
			      		
			
			
      Approximately 26.26 kDa. Due to glycosylation, the protein migrates to 35-40 kDa based on Tris-Bis PAGE result.
      
			      		
		
      
		
      
			
			
      純度
      
			      		
			
			
      > 95% as determined by SDS-PAGE and HPLC.
      
			      		
		
      
		
      
			
			
      活性
      
			      		
			
			
      ELISA Data：Immobilized SARS-CoV-2 Spike RBD (Delta B.1.617.2) , His Tag at 1μg/ml (100μl/well) on the plate. Dose response curve for Human ACE2, hFc Tag with the EC50 of 9.8ng/ml determined by ELISA.
      
			      		
		
      
		
      
			
			
      內(nèi)毒素
      
			      		
			
			
      < 1.0 EU per 1μg of the protein by the LAL method.
      
			      		
		
      
		
      
			
			
      制劑
      
			      		
			
			
      Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). 
      
			      		
		
      
		
      
			
			
      復(fù)溶
      
			      		
			
			
      Centrifuge tubes before opening. Reconstituting to a concentration more than 100 μg/mL is recommended (usually we use 1 mg/mL solution for lyophilization). Dissolve the lyophilized protein in distilled water.
      
			      		
		
      
	      

      

      


       
      


      運(yùn)輸與保存方法
      


      冰袋運(yùn)輸。-20 ℃保存，一年有效期。
      


      復(fù)溶后，-20 °C，在未開封狀態(tài)下保存 3-6 個(gè)月。復(fù)溶后，2-8°C 保存 2-7 天。
      


      建議第一次使用時(shí)分裝凍存，避免反復(fù)凍融。
      


       
      


      注意事項(xiàng)
      


      1.避免反復(fù)凍融。
      


      2.為了您的安全和健康，請(qǐng)穿實(shí)驗(yàn)服并戴一次性手套操作。
      


      3.本產(chǎn)品僅作科研用途！
      


      HB221112
      

         
       
       
       
       
       
       
       
      400-6111-883