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SARS-CoV-2 Variants

Since emerging in 2019, SARS-CoV-2’s genome has proved to be relatively stable. However, the emergence of multiple new variants in late 2020 has caused concern over the efficacy of recently-developed countermeasures, including diagnostics, therapeutics and vaccines. Many mutations have occurred in the Spike protein and its receptor-binding domain (RBD), which plays a central role in pathogenesis and the induction of neutralising antibodies. To identify and investigate the effects of these mutations, extensive work is now underway. Click here to see our full coronavirus range.

Our Spike Mutants

To support the investigation of SARS-CoV-2 variants, The Native Antigen Company offers a growing range of mutant Spike antigens. Expressed from our proprietary mammalian expression system, these antigens display full glycosylation and proper folding for use in the development of high-performance assays and other applications. For more information on our available products, click the green text in the far-right column below:

 

Mutant Spike Trimer
SARS-CoV-2 Dominant Lineage
Spike Mutations
Antigen
Availability
Omicron Variant (BA.5)
G339D, S371F, S373P, S375F, T376A, D405N, R408S, K417N, N440K, L452R, S477N, T478K, E484A, F486V, Q498R, N501Y, Y505H
Spike Receptor-Binding Domain
REC32036 >>>
Omicron Variant (B.1.1.529)
A67V, Δ69-70, T95I, G142D, Δ143-145, Δ211, L212I, ins214EPE, G339D, S371L, S373P, S375F, K417N, N440K, G446S, S477N, T478K, E484A, Q493R, G496S, Q498R, N501Y, Y505H, T547K, D614G, H655Y, N679K, P681H, N764K, D796Y, N856K, Q954H, N969K, L981F
Pre-Fusion Stabilised Whole Spike
REC32008 >>>
Omicron Variant (B.1.1.529)
G339D, S371L, S373P, S375F, K417N, N440K, G446S, S477N, T478K, E484A, Q493R, G496S, Q498R, N501Y, Y505H
Spike Receptor-Binding Domain
REC32007 >>>
Omicron Variant (B.1.1.529)
A67V, Δ69-70, T95I, G142D, Δ143-145, Δ211, L212I, ins214EPE, G339D, S371L, S373P, S375F, K417N, N440K, G446S, S477N, T478K, E484A, Q493R, G496S, Q498R, N501Y, Y505H, T547K, D614G, H655Y, N679K, P681H, N764K, D796Y
Spike S1 Subunit
REC32006 >>>
Wuhan-Hu-1 Wild-Type
N/A
Pre-Fusion Stabilised Whole Spike
REC31966 >>>
Wuhan-Hu-1 Wild-Type
N/A
Spike Receptor-Binding Domain
REC31882 >>>
Alpha Variant (B.1.1.7)
69-70del, Y144del, N501Y, A570D, P681H, T716I, S982A, D1118H
Pre-Fusion Stabilised Whole Spike
REC31924 >>>
Alpha Variant (B.1.1.7)
N501Y
Spike Receptor-Binding Domain
REC31946 >>>
Beta Variant (B.351.1/501Y.V2)
L18F, D80A, D215G, del242-244, K417N, E484K, N501Y, D614G, A701V
Pre-Fusion Stabilised Whole Spike
REC31963 >>>
Beta Variant (B.1.351/501Y.V2)
D80A, D215G, K417N, E484K, N501Y, A701V
Pre-Fusion Stabilised Whole Spike
REC31926 >>>
Beta Variant (B.1.351/501Y.V2)
K417N, E484K, N501Y
Spike Receptor-Binding Domain
REC31945 >>>
Delta Variant (B.1.617.2)
T19R, T95I, G142D, E156G, del157-158, W258L, N417K, L452R, T478K, D614G, P681R, D950N
Pre-Fusion Stabilised Whole Spike
REC31975 >>>
Delta Variant (B.1.617.2)
L452R, T478K
Spike Receptor-Binding Domain
REC31974 >>>
Gamma Variant (B.1.1.28)
L18F, T20N, P26S, D138Y, R190S, K417T, E484K, N501Y, D614G, H655Y, T1027I, V1176F
Pre-Fusion Stabilised Whole Spike
REC31944 >>>
Gamma Variant (B.1.1.28)
K417T, E484K, N501Y
Spike Receptor-Binding Domain
REC31961 >>>
Kappa Variant (B.1.617.1)
E484Q, L452R
Spike Receptor-Binding Domain
REC31971 >>>
Lambda Variant (C.37)
G75V, T76I, 246-252del, L452Q, F490S, D614G, T859N
Pre-Fusion Stabilised Whole Spike
REC31976 >>>
Lambda Variant (C.37)
L452Q, F490S
Spike Receptor-Binding Domain
REC31992 >>>

Custom Services

The Native Antigen Company also offers services to develop custom variants via site-directed mutagenesis, including the ablation of specific glycans. For multiple, or more substantial mutations such as indels, we are able to develop antigens de novo. For the investigation of mutant binding, we also offer recombinant ACE2 proteins and services to raise monoclonal and polyclonal antibodies with mutant antigens. To get in touch with a member of our R&D team, click the button below:

Spike Mutation Map

The map below shows all the Spike mutations we currently provide or are developing in relation to the original Wuhan-Hu-1 sequence:

SARS-CoV-2 Variant Mutation Map

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