Anti-SARS-CoV-2 Spike Glycoprotein S2 antibody [EPR25038-122] - BSA and Azide free
- RabMAb
- Recombinant
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Rabbit Recombinant Monoclonal SPIKE antibody. Carrier free. Suitable for Dot, Flow Cyt (Intra), ICC/IF, WB, I-ELISA and reacts with Recombinant fragment - SARS-CoV-2, Transfected cell line - SARS-CoV-2 samples.
View Alternative Names
2, S, Spike glycoprotein, S glycoprotein, E2, Peplomer protein
- Flow Cyt (Intra)
Collaborator
Flow Cytometry (Intracellular) - Anti-SARS-CoV-2 Spike Glycoprotein S2 antibody [EPR25038-122] - BSA and Azide free (AB284041)
Flow cytometric analysis of 2% paraformaldehyde fixed 0.1% Tween-20 permeabilized HEK-293T (Human embryonic kidney epithelial cell) cells transfected with a Spike SARS-CoV-1 (Left) or Spike SARS-CoV-2 (Right) expression vector. SARS-CoV-2 Spike Glycoprotein S2 was labelled with ab283913 at 1/50 dilution (1 μg)/ Left and Right. Cells were surface stained with ab283913. Then fixed with 2% PFA for 10 minutes followed by intracellularly stained with anti-Flag tag conjugated to BV421. A Goat anti rabbit IgG (Alexa Fluor® 488, ab150081) at 1/5000 dilution was used as the secondary antibody. No cross-reactivity with Spike SARS-CoV-1.
- I-ELISA
Lab
Indirect ELISA - Anti-SARS-CoV-2 Spike Glycoprotein S2 antibody [EPR25038-122] - BSA and Azide free (AB284041)
This data was developed using ab283913, the same antibody clone in a different buffer formulation.
Indirect ELISA showing primary antibody ab283913 binding to the antigen ab272106 (recombinant human coronavirus SARS-CoV-2 spike glycoprotein S2 (Fc Chimera)). Plates were coated with recombinant human coronavirus SARS-CoV-2 spike glycoprotein S2 (Fc Chimera, ab272106) and recombinant human coronavirus SARS spike glycoprotein (Tagged, ab270844) at 1000 ng/ml. Binding of ab283913 was assessed in a serial dilution range 0.016- 1000 ng/mL (a 3-fold serial dilution).
Binding was detected using pre-adsorbed secondary antibody, goat anti-rabbit IgG H&L (HRP, ab97080) at 1/2000 dilution.
- I-ELISA
Lab
Indirect ELISA - Anti-SARS-CoV-2 Spike Glycoprotein S2 antibody [EPR25038-122] - BSA and Azide free (AB284041)
This data was developed using ab283913, the same antibody clone in a different buffer formulation.
Indirect ELISA showing primary antibody ab283913 binding to the antigen ab272106 (recombinant human coronavirus SARS-CoV-2 spike glycoprotein S2 (Fc Chimera)). Plates were coated with recombinant human coronavirus SARS-CoV-2 spike glycoprotein S2 (Fc Chimera, ab272106) and recombinant human coronavirus SARS-CoV-2 spike glycoprotein S1 (Fc Chimera, ab273068) at 1000 ng/ml. Binding of ab283913 was assessed in a serial dilution range 0.028- 5000 ng/mL (a 3-fold serial dilution).
Binding was detected using pre-adsorbed secondary antibody, goat anti-rabbit IgG H&L (HRP, ab97080) at 1/2000 dilution.
- ICC/IF
Lab
Immunocytochemistry/ Immunofluorescence - Anti-SARS-CoV-2 Spike Glycoprotein S2 antibody [EPR25038-122] - BSA and Azide free (AB284041)
Immunofluorescent analysis of 4% paraformaldehyde- fixed, 0.1% Triton X-100 permeabilized HEK-293T (human epithelial cell line from embryonic kidney) cells labelling SARS-CoV-2 spike glycoprotein S2 with primary antibody anti-SARS-CoV-2 spike glycoprotein S2 (ab283913) at 1/500 dilution, followed by AlexaFluor®488 Goat anti-Rabbit (green) (ab150081) secondary antibody at 1/1000 dilution. Confocal image showing cytoplasmic staining in HEK-293T cells transfected with a Spike-SARS-CoV2 expression vector containing a FLAG tag, no staining in HEK-293T cells transfected with a Spike-SARS-CoV1 expression vector containing a FLAG tag. Anti-FLAG mouse monoclonal antibody was used to counterstain at 1/500 dilution. AlexaFluor®594 Goat anti-Mouse (red) (ab150120) secondary antibody was used to counterstain at 1/1000 dilution. The nuclear counterstain is DAPI (blue).
This data was developed using ab283913, the same antibody clone in a different buffer formulation.
- Flow Cyt (Intra)
Lab
Flow Cytometry (Intracellular) - Anti-SARS-CoV-2 Spike Glycoprotein S2 antibody [EPR25038-122] - BSA and Azide free (AB284041)
Flow cytometric analysis of 2% paraformaldehyde fixed 0.1% Tween-20 permeabilized HEK-293T (Human embryonic kidney epithelial cell) cells transfected with a Spike SARS-CoV-1 (Left) or Spike SARS-CoV-2 (Right) expression vector. SARS-CoV-2 Spike Glycoprotein S2 was labelled with ab283913 at 1/500 dilution (0.1 μg)/ Left and Right. Cells were surface stained with ab283913. Then fixed with 2% PFA for 10 minutes followed by intracellularly stained with anti-DDDDK tag conjugated to BV421. A Goat anti rabbit IgG (Alexa Fluor® 488, ab150081) at 1/5000 dilution was used as the secondary antibody. No cross-reactivity with Spike SARS-CoV-1. This data was developed using ab283913, the same antibody clone in a different buffer formulation.
- ICC/IF
Lab
Immunocytochemistry/ Immunofluorescence - Anti-SARS-CoV-2 Spike Glycoprotein S2 antibody [EPR25038-122] - BSA and Azide free (AB284041)
Immunofluorescent analysis of 100% methanol- fixed, 0.1% Triton X-100 permeabilized HEK-293T (human epithelial cell line from embryonic kidney) cells labelling SARS-CoV-2 spike glycoprotein S2 with primary antibody anti-SARS-CoV-2 spike glycoprotein S2 (ab283913) at 1/500 dilution, followed by AlexaFluor®488 Goat anti-Rabbit (green) (ab150081) secondary antibody at 1/1000 dilution. Confocal image showing cytoplasmic staining in HEK-293T cells transfected with a Spike-SARS-CoV2 expression vector containing a FLAG tag, no staining in HEK-293T cells transfected with a Spike-SARS-CoV1 expression vector containing a FLAG tag. Anti-FLAG mouse monoclonal antibody was used to counterstain at 1/500 dilution. AlexaFluor®594 Goat anti-Mouse (red) (ab150120) secondary antibody was used to counterstain at 1/1000 dilution. The nuclear counterstain is DAPI (blue).
This data was developed using ab283913, the same antibody clone in a different buffer formulation.
- I-ELISA
Supplier Data
Indirect ELISA - Anti-SARS-CoV-2 Spike Glycoprotein S2 antibody [EPR25038-122] - BSA and Azide free (AB284041)
Indirect ELISA showing primary antibody ab283913 binding SARS-CoV-2 (Omicron variant) Spike Glycoprotein S1 (ab290828); SARS-CoV-2 (Omicron variant) Spike Glycoprotein RBD (ab290829); Recombinant SARS-CoV-2 Omicron variant Spike protein (GCN4-IZ) His tag; Recombinant Human coronavirus SARS-CoV-2 Spike Glycoprotein S2 (Fc Chimera) (ab272106). Antigen concentration is 1000 ng/ml. Substrate solution is p-nitrophenyl phosphate(PNPP). Binding of ab283913 was assessed in a serial dilution range 1000-0 ng/ml. Binding was detected using the secondary antibody, Alkaline Phosphatase-conjugated AffiniPure Goat Anti-Rabbit IgG(H+L) at 1/2500 dilution. This data was developed using ab283913, the same antibody clone in a different buffer formulation.
- WB
Lab
Western blot - Anti-SARS-CoV-2 Spike Glycoprotein S2 antibody [EPR25038-122] - BSA and Azide free (AB284041)
This data was developed using ab283913, the same antibody clone in a different buffer formulation.
Lane 1 : Red – loading control Donkey anti-Goat IgG H&L (IRDye® 800CW) preadsorbed (ab216775) binding to the sheep Fc Chimera tag on recombinant human coronavirus SARS-CoV-2 spike glycoprotein S2 – observed at 135 kDa
Lanes 2 : Green – ab283913 observed at 135 kDa.
ab283913 was shown to bind specifically to SARS-CoV-2 spike glycoprotein S2 in Western blot. Samples were run on an SDS-PAGE gel then transferred onto a nitrocellulose membrane. Membranes were blocked in 3 % milk in TBS-0.1 % Tween® 20 (TBS-T) before incubation with primary antibodies overnight at 4 °C. Blots were washed four times in TBS-T, incubated with secondary antibodies for 1 h at room temperature, washed again four times then imaged. Secondary antibodies used were Donkey anti-Goat IgG H&L (IRDye® 800CW) preadsorbed (ab216775) and Donkey anti-Rabbit IgG H&L (IRDye® 680RD) preadsorbed (ab216779) at 1/20000 dilution.
Blocking buffer : 3% milk in TBS-0.1% Tween® 20 (TBS-T)
All lanes:
Western blot - Anti-SARS-CoV-2 Spike Glycoprotein S2 antibody [EPR25038-122] - BSA and Azide free (ab284041)
All lanes:
Western blot - Recombinant Human coronavirus SARS-CoV-2 Spike Glycoprotein S2 (Fc Chimera) (<a href='/en-us/products/proteins-peptides/recombinant-human-coronavirus-sars-cov-2-spike-glycoprotein-s2-fc-chimera-ab272106'>ab272106</a>) at 0.2 µg
Secondary
Lane 1:
Western blot - Donkey anti-Goat IgG H&L (IRDye® 800CW) preadsorbed (<a href='/en-us/products/secondary-antibodies/donkey-goat-igg-h-l-irdye-800cw-preadsorbed-ab216775'>ab216775</a>)
Lane 2:
Western blot - Donkey anti-Goat IgG H&L (IRDye® 800CW) preadsorbed (<a href='/en-us/products/secondary-antibodies/donkey-goat-igg-h-l-irdye-800cw-preadsorbed-ab216775'>ab216775</a>) at 1/20000 dilution
false
- Dot
Lab
Dot Blot - Anti-SARS-CoV-2 Spike Glycoprotein S2 antibody [EPR25038-122] - BSA and Azide free (AB284041)
Dot blot analysis using ab283913 at 1/1000 dilution followed by a Goat Anti-Rabbit IgG (HRP) with minimal cross-reactivity with human IgG at 1/2000 dilution.
Lane 1 : Recombinant Human coronavirus SARS-CoV-2 (B.1.1.529/Omicron) Spike Glycoprotein S1 (ab290828).
Lane 2 : Recombinant Human coronavirus SARS-CoV-2 (B.1.1.529/Omicron) Spike Glycoprotein S1 RBD protein (ab290829).
Lane 3 : Recombinant Human coronavirus SARS-CoV-2 (B.1.1.529/Omicron) Spike protein.
Lane 4 : Recombinant Human coronavirus SARS-CoV-2 Spike Glycoprotein S2 (ab272106).
Blocking buffer and concentration : 5% NFDM/TBST.
Diluting buffer and concentration : 5% NFDM/TBST.
Exposure Time : 180 seconds.
This data was developed using ab283913, the same antibody clone in a different buffer formulation.
Related conjugates and formulations (1)
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Anti-SARS-CoV-2 Spike Glycoprotein S2 antibody [EPR25038-122]
Reactivity data
Product details
ab284041 is the carrier free version of ab283913
Patented technology
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.
What are the advantages of a recombinant monoclonal antibody?
This product is a recombinant monoclonal antibody, which offers several advantages including:
- - High batch-to-batch consistency and reproducibility
- - Improved sensitivity and specificity
- - Long-term security of supply
- - Animal-free batch production
For more information, read more on recombinant antibodies.
Conjugation ready
Our carrier-free antibodies are typically supplied in a PBS-only formulation, purified and free of BSA, sodium azide and glycerol. This conjugation-ready format is designed for use with fluorochromes, metal isotopes, oligonucleotides, and enzymes, which makes them ideal for antibody labelling, functional and cell-based assays, flow-based assays (e.g. mass cytometry) and Multiplex Imaging applications.
Use our conjugation kits for antibody conjugates that are ready-to-use in as little as 20 minutes with 1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.
Compatibility
This product is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm, without the need for antibody preparation. Maxpar® is a trademark of Fluidigm Canada Inc.
Properties and storage information
Form
Purification technique
Storage buffer
Shipped at conditions
Appropriate short-term storage conditions
Appropriate long-term storage conditions
Supplementary information
This supplementary information is collated from multiple sources and compiled automatically.
Biological function summary
The SARS-CoV-2 Spike Glycoprotein S2 plays an important role in the viral infectivity process. It is part of a trimeric spike protein complex which undergoes a conformational shift during host cell entry. The S2 subunit specifically triggers the fusion process following receptor binding of another component the S1 subunit. During infection immune response typically generates anti-spike antibodies that target this protein aiming to block viral invasion or clear infected cells.
Pathways
The SARS-CoV-2 Spike Glycoprotein S2 is critical in the viral entry and replication pathway. It interacts with host proteins in pathways involving endocytosis. The fusion activity of S2 is closely associated with cellular proteases like TMPRSS2 and furin which prime the spike protein for entry. These interactions are important for the initiation of the viral replication cycle and help shape the host's pathophysiological response to infection.
Product protocols
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Target data
Additional targets
Product promise
Please note: All products are 'FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC OR THERAPEUTIC PROCEDURES'.
For licensing inquiries, please contact partnerships@abcam.com