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Anti-2019-nCoV Spike (P681H) Mutant (7C11H11)

Monoclonal Antibody
Catalog No. C19S1-6704M

Catalog No. Pack Size Price (USD)
C19S1-6704M-20 20 ug $165
C19S1-6704M-100 100 ug $325
C19S1-6704M-BULK BULK Contact Us  


In September of 2020 a new lineage of SARS-CoV-2, known as B.1.1.7 and named as Alpha variant, was discovered in the United Kingdom. This lineage was found to have developed 14 lineage-specific amino acid replacements and 3 deletions prior to its discovery. The transmission of alpha variant (B.1.1.7 lineage) was increased at least 50%. Increased severity and higher death rate were also found in alpha variant. Alpha variant will not affect the effectiveness of COVID19 vaccine. One of the mutations associated with this lineage is a N501Y in the spike protein of the virus. It is believed that this mutation is able to increase the spike protein's affinity for the host ACE2 receptor and it has been associated with increased infectivity and virulence. B.1.1.7 viruses have also been shown to have a P681H mutation in the cleavage site of spike protein. This location is one of the residues that make up the furin cleavage site between S1 and S2 in spike protein.


1) Duchene et al. Virus Evolution 6(2): veaa061. 2) Gu et al. Science 369(6511):1603-1607 3) Hoffmann et al. Molecular Cell 78(4):779-784.e5 4) Davies et al. Science 372(6538):eabg3055. 5) Davies et al. Nature. 593(7858):270-274. 6) Graham, et al. The Lancet Public Health. 6(5): e335-e345. 7) Horby et al. New & Emerging Threats Advisory Group. 2020;91:264-266.

Sample Data:

Anti-2019-nCoV Spike P681H mutant specific antibody (7C11H11) can specifically detect UK variant (B.1.1.7) spike S1 protein, but not WT spike S1 protein.


May cross-react with several virus variant lineages containing the P681H mutation, including B.11.318, B.1.621, B.1.621.1, P.3. but all of these lineages are rarely present in current pandemic.

Cross Reactivity:




Storage and Stability:

Stable at 4˚C for three months and -20˚C for up to one year. As with all antibodies care should be taken to avoid repeated freeze thaw cycles. Antibodies should not be exposed to prolonged high temperatures.

Product Datasheets

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