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Goat anti hamster igg h l alexa fluor 488

Manufactured by Thermo Fisher Scientific

Goat anti-hamster IgG (H + L) Alexa Fluor 488 is a secondary antibody conjugated with Alexa Fluor 488 dye. It is designed to detect and bind to hamster immunoglobulin G (IgG) heavy and light chains.

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2 protocols using goat anti hamster igg h l alexa fluor 488

1

SARS-CoV-2 Spike Protein Expression in Expi293F Cells

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SARS-CoV-2 S-expressing expi293F cells were generated by transfection with linearized plasmid (pcDNA3.1) encoding codon-optimized full-length SARS-CoV-2 S protein matching the amino acid sequence of the IL-CDC-IL1/2020 isolate (GenBank ACC# MN988713), the B.1.1.7 isolate9 , or the B.1.351 isolate37 (link). Stable transfectants were single-cell sorted and selected to obtain a high-level Spike surface expressing clone (293F-Spike-S2A). 293F-Spike-S2A cells were incubated with 100 μl of plasma diluted 100-fold in RPMI containing 10% FBS (R10) for 30 min at 37 °C. Cells were washed three times and stained with a goat anti-hamster IgG (H + L) Alexa Fluor 488 diluted 1:250 (Cat A-21110, ThermoFisher Scientific). Cells were then fixed with 4% formaldehyde solution and fluorescence was evaluated on a LSRII analytic cytometer (BD Bioscience).
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2

SARS-CoV-2 Spike Protein Expression and Antibody Binding Assay

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SARS-CoV-2 S-expressing expi293F cells were generated by transfection with linearized plasmid (pcDNA3.1) encoding codon-optimized full-length SARS-CoV-2 S protein matching the amino acid sequence of the IL-CDC-IL1/2020 isolate (GenBank ACC# MN988713), the B.1.1.7 isolate9 , or the B.1.351 isolate41 (link). Stable transfectants were single-cell sorted and selected to obtain a high-level Spike surface expressing clone (293F-Spike-S2A). 293F-Spike-S2A cells were incubated with 100 μl of plasma diluted 100-fold in RPMI containing 10% FBS (R10) for 30 minutes at 37°C. Cells were washed 3 times and stained with a goat anti-hamster IgG (H+L) Alexa Fluor 488 (ThermoFisher Scientific). Cells were then fixed with 4% formaldehyde solution and fluorescence was evaluated on a LSRII analytic cytometer (BD Bioscience).
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