SARS-CoV-2 Antigens

The coronavirus disease 2019 (COVID-19) pandemic, due to the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has caused a worldwide health crisis. To support COVID-19 research, Kactus has developed a series of SARS-CoV-2 and SARS antigens including domains of spike (S) proteins, host cell receptor ACE2.
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Advantages
Low-endotoxin(<1EU per μg by the LAL method) and high-purity (>95%);
High avidity;
High degree of batch-to-batch consistency;
Featured protein expression screening system for high-yield product (up to several grams);
Offering biotinylated proteins, with highest bioactivity and sensitivity.
Our Data
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Fig. 1 SDS-PAGE of SARS-CoV-2 Spike S1 and bioactivity assay by ELISA.
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Fig. 2 Human ACE2 captured on Protein A chip, can bind SARS-COV-2 Spike RBD, His Tag with an affinity constant of 13.8nM as determined in a SPR assay(Biacore T200).
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Fig. 3 Human ACE2 captured on Protein A chip, can bind SARS-COV-2 Spike RBD(N501Y), His Tag with an affinity constant of 1.74nM as determined in a SPR assay(Biacore T200).
Product List
Cat. No. Protein Name Species Tag Exp. System
COV-VM1S1 SARS-COV-2 Spike S1 Protein SARS-CoV-2 C-His Expi293 Inquiry Now
COV-VM1SY SARS-COV-2 Spike S1 (N501Y) Protein SARS-CoV-2 C-His Expi293 Inquiry Now
COV-VM1SM SARS-COV-2 Spike S1 ( N501Y,K417N,E484K) Protein SARS-CoV-2 C-His Expi293 Inquiry Now
COV-VM2S1 SARS-COV-2 Spike S1 Protein SARS-CoV-2 C-hFc Expi293 Inquiry Now
COV-VM4SG SARS-COV-2 Spike S1 (D614G) Protein SARS-CoV-2 C-His-Avi Expi293 Inquiry Now
COV-VM5S1 SARS-COV-2 Spike S1 Protein SARS-CoV-2 C-hFc-Avi Expi293 Inquiry Now
COV-VM5SS SARS-COV-2 Spike S Protein SARS-CoV-2 C-hFc-Avi Expi293 Inquiry Now
COV-VM4SS SARS-COV-2 Spike S Trimer Protein SARS-CoV-2 C-His-Avi Expi293 Inquiry Now
COV-VM4LG SARS-COV-2 Spike S Trimer (D614G) Protein SARS-CoV-2 C-His-Avi Expi293 Inquiry Now
COV-VM1BY SARS-COV-2 Spike RBD (N501Y) Protein SARS-CoV-2 C-His Expi293 Inquiry Now
COV-VM1RM SARS-COV-2 Spike RBD ( N501Y,K417N,E484K ) Protein SARS-CoV-2 C-His Expi293 Inquiry Now
COV-VM4BD SARS-COV-2 Spike RBD Protein SARS-CoV-2 C-His-Avi Expi293 Inquiry Now
COV-VM3BD SARS-COV-2 Spike RBD Protein SARS-CoV-2 C-mFc Expi293 Inquiry Now
COV-VM2BD SARS-COV-2 Spike RBD Protein SARS-CoV-2 C-hFc Expi293 Inquiry Now
COV-VE4NP SARS-COV-2 Nucleocapsid Protein SARS-CoV-2 N-His-Avi E.coli Inquiry Now
SAR-VM4S1 SARS Spike S1 Protein SARS C-His-Avi Expi293 Inquiry Now
SAR-VM5S1 SARS Spike S1 Protein SARS C-hFc-Avi Expi293 Inquiry Now
SAR-VM4BD SARS-CoV-2 Spike RBD Protein SARS C-His-Avi Expi293 Inquiry Now
ACE-HM101 Human ACE2/ACEH Protein Human C-His Expi293 Inquiry Now
ACE-HM201 Human ACE2/ACEH Protein Human C-hFc Expi293 Inquiry Now
ACE-CM401 Cynomolgus ACE2/ACEH Protein Cynomolgus C-His-Avi Expi293 Inquiry Now
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