HCoV-229E Spike/S Protein (APT69883, sf9, His)

Coronaviruses (CoVs) are enveloped, positive-sense, single-stranded RNA viruses with the largest genomes known among RNA viruses. The CoVs S-protein mediates receptor binding and fusion of the viral and host cell membranes. HCoV-229E is an alpha-coronaviruse that uses different host proteins as receptors.In HCoV-229E, its receptor binding domain (RBD) shows extensive sequence variation. HCoV-229E exploits trypsin, cathepsin L and TMPRSS2 to complete the fusion activation mediated by the S protein. HCoV-229E Spike/S Protein (APT69883, sf9, His) is the recombinant Virus-derived HCoV-229E Spike/S protein, expressed by Sf9 insect cells , with C-His labeled tag.

For research use only. We do not sell to patients.
  • Species: Virus
  • Source: Sf9 insect cells
  • Storage:
    Stored at -80°C for 1 year from date of receipt. It is stable at -20°C for 3 months after opening. It is recommended to freeze aliquots at -80°C for extended storage. Avoid repeated freeze-thaw cycles.
  • Biological Activity
  • Technical Parameters
  • Product Properties
  • Documentation
  • Help & FAQs

Biological Activity

Description

Coronaviruses (CoVs) are enveloped, positive-sense, single-stranded RNA viruses with the largest genomes known among RNA viruses. The CoVs S-protein mediates receptor binding and fusion of the viral and host cell membranes. HCoV-229E is an alpha-coronaviruse that uses different host proteins as receptors.In HCoV-229E, its receptor binding domain (RBD) shows extensive sequence variation. HCoV-229E exploits trypsin, cathepsin L and TMPRSS2 to complete the fusion activation mediated by the S protein[1][2]. HCoV-229E Spike/S Protein (APT69883, sf9, His) is the recombinant Virus-derived HCoV-229E Spike/S protein, expressed by Sf9 insect cells , with C-His labeled tag.

Background

Coronaviruses (CoVs) are enveloped, positive-sense, single-stranded RNA viruses with the largest genomes known among RNA viruses (~26–32 kb) belonging to the order Nidovirales1. Coronaviruses spike (S) glycoproteins mediate viral entry into host cells by binding to host receptors. To date, there are seven coronaviruses, namely the alphacoronaviruses HCoV-229E and HCoV-NL63, the betacoronaviruses HCoV-OC43, HCoV-HKU1, SARS-CoV, MERS-CoV and the emerging coronavirus (SARS-CoV-2). Moreover, fusion activation of HCoV-229E may be highly reliant on cleavage of the S2´ trigger loop (GSR685↓V686AG)[1][2].

Technical Parameters

  • Species Virus
  • Source Sf9 insect cells
  • Tag C-His
  • Accession
  • Gene ID
  • Molecular Construction
    • N-term
    • HCoV-229E S (C16-W1115)
      Accession # APT69883
    • His
    • C-term
  • Protein Length

    Partial

  • Synonyms

    Human coronAvirus (HCoV-229E) Spike Protein (S1+S2 ECD, His)

  • AA Sequence

    CQTTNGTNTSHSVCNGCVGHSENVFAVESGGYIPSNFSFNNWFLLTNTSSVVDGVVRSFQPLLLNCLWSVSGSQFTTGFVYFNGTGRGACKGFYSNASSDVIRYNINFEENLRRGTILFKTSYGAVVFYCTNNTLVSGDAHIPSGTVLGNFYCFVNTTIGNETTSAFVGALPKTVREFVISRTGHFYINGYRYFSLGDVEAVNFNVTNAATIVCTVALASYADVLVNVSQTAIANIIYCNSVINRLRCDQLSFDVPDGFYSTSPIQPVELPMSIVSLPVYHKHTFIVLHVKFEHQRGPGKCYNCRPSVINITLANFNETKGPLCVDTSHFTTQFVDNVKLARWSASINTGNCPFSFGKVNNFVKFGSVCFSLKDIPGGCAMPIMANLVNHKSHNIGSLYVSWSDGDVITGVPKPVEGVSSFMNVTLNKCTKYNIYDVSGVGVIRISNDTFLNGITYTSTSGNLLGFKDVTNGTIYSITPCNPPDQLVVYQQAVVGAMLSENFTSYGFSNVVEMPKFFYASNGTYNCTDAVLTYSSFGVCADGSIIAVQPRNVSYDSVSAIVTANLSIPSNWTTSVQVEYLQITSKPIVVDCSTYVCNGNVRCVELLKQYTSACKTIEDALRNSAMLESADVSEMLTFDKKAFTLANVSSFGDYNLSSVIPSLPRSGSRVAGRSAIEDILFSKLVTSGLGTVDADYKKCTKGLSIADLACAQYYNGIMVLPGVADAERMAMYTGSLIGGIALGGLTSAASIPFSLAIQSRLNYVALQTDVLQENQKILAASFNKAMTNIVDAFTGVNDAITQTSQALQTVATALNKIQDVVNQQGNSLNHLTSQLRQNFQAISSSIQAIYDRLDIIQADQQVDRLITGRLAALNVFVSHTLTKYTEVRASRQLAQQKVNECVKSQSKRYGFCGNGTHIFSLVNAAPEGLVFLHTVLLPTQYKDVEAWSGLCVDGINGYVLRQPNLALYKEGNYYRITSRIMFEPRIPTIADFVQIENCNVTFVNISRSELQTIVPEYIDVNKTLQELSYKLPNYTVPDLVVEQYNQTILNLTSEISTLENKSAELNYTVQKLQTLIDNINSTLVDLKWLNRVETYIKWPWW

  • Predicted Molecular Mass

    122.1 kDa

  • Purity

    ≥ 85%, as determined by reducing SDS-PAGE.

Product Properties

Appearance

Solution

Endotoxin Level

<1 EU/μg, determined by LAL method.

Storage & Stability

Stored at -80°C for 1 year from date of receipt. It is stable at -20°C for 3 months after opening. It is recommended to freeze aliquots at -80°C for extended storage. Avoid repeated freeze-thaw cycles.

Shipping

Shipping with dry ice.

Calculators

Reconstitution Calculator

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

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Dilution Calculator

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

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The Specific Activity Calculator Equation
  • Specific Activity (Unit/mg)
  • Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) Specific Activity (Unit/mg)
Unit/mg
= 106 ÷
Biological Activity (ED50) Biological Activity (ED50)
106 ÷
ng/mL
MOQ
Minimum order quantity
100 mg

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