SKU: 27311539742

SARS-CoV-2 (COVID-19) S1, His tag

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Description

SARS-CoV-2 (COVID-19) S1, His tagProduct Specification Species SARS CoV 2 Synonyms Spike glycoprotein, S glycoprotein, E2, Peplomer protein Accession P0DTC2 Amino Acid Sequence Protein sequence (P0DTC2, Val16 Arg685, with C His tag)

Product Specification


Species SARS-CoV-2
Synonyms Spike glycoprotein, S glycoprotein, E2, Peplomer protein
Accession P0DTC2
Amino Acid Sequence

Protein sequence (P0DTC2, Val16-Arg685, with C-His tag) VNLTTRTQLPPAYTNSFTRGVYYPDKVFRSSVLHSTQDLFLPFFSNVTWFHAIHVSGTNGTKRFDNPVLPFNDGVYFASTEKSNIIRGWIFGTTLDSKTQSLLIVNNATNVVIKVCEFQFCNDPFLGVYYHKNNKSWMESEFRVYSSANNCTFEYVSQPFLMDLEGKQGNFKNLREFVFKNIDGYFKIYSKHTPINLVRDLPQGFSALEPLVDLPIGINITRFQTLLALHRSYLTPGDSSSGWTAGAAAYYVGYLQPRTFLLKYNENGTITDAVDCALDPLSETKCTLKSFTVEKGIYQTSNFRVQPTESIVRFPNITNLCPFGEVFNATRFASVYAWNRKRISNCVADYSVLYNSASFSTFKCYGVSPTKLNDLCFTNVYADSFVIRGDEVRQIAPGQTGKIADYNYKLPDDFTGCVIAWNSNNLDSKVGGNYNYLYRLFRKSNLKPFERDISTEIYQAGSTPCNGVEGFNCYFPLQSYGFQPTNGVGYQPYRVVVLSFELLHAPATVCGPKKSTNLVKNKCVNFNFNGLTGTGVLTESNKKFLPFQQFGRDIADTTDAVRDPQTLEILDITPCSFGGVSVITPGTNTSNQVAVLYQDVNCTEVPVAIHADQLTPTWRVYSTGSNVFQTRAGCLIGAEHVNNSYECDIPIGAGICASYQTQTNSPRRAR

Expression System HEK293
Molecular Weight Predicted MW: 76.7 kDa Observed MW: 95-130 kDa
Purity >95% by SDS-PAGE
Endotoxin <0.1EU/μg
Tag with C-His tag
Physical Appearance Lyophilized Powder
Storage Buffer Lyophilized from a 0.2 μm filtered solution of 0.2M PBS, pH7.4.
Reconstitution Reconstitute no more than 1 mg/mL according to the size in deionized water after rapid centrifugation.
Stability & Storage

12 months from date of receipt, -20 to -70 °C as supplied.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
1 week, 2 to 8 °C under sterile conditions after reconstitution.
Please avoid repeated freeze-thaw cycles.

Background

Severe acute respiratory syndrome coronavirus 2 (SARS‑CoV‑2) is a strain of coronavirus that causes COVID-19, the respiratory illness responsible for the COVID-19 pandemic. SARS-CoV-2 has four structural proteins, known as the S (spike), E (envelope), M (membrane), and N (nucleocapsid) proteins; the N protein holds the RNA genome, and the S, E, and M proteins together create the viral envelope. Coronavirus S proteins are glycoproteins and also type I membrane proteins (membranes containing a single transmembrane domain oriented on the extracellular side). They are divided into two functional parts (S1 and S2). Spike is the protein responsible for allowing the virus to attach to and fuse with the membrane of a host cell; specifically, its S1 subunit catalyzes attachment, the S2 subunit fusion. The S1 region of the spike glycoprotein is responsible for interacting with receptor molecules on the surface of the host cell in the first step of viral entry. S1 contains two domains, called the N-terminal domain (NTD) and C-terminal domain (CTD). The CTD is responsible for the interactions of SARS-CoV-2 with angiotensin-converting enzyme 2 (ACE2).

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SKU: 27311539742

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4.4 ★★★★★
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Verified Purchase
Estefania P.
Bozeman, US
★★★★★ 5
TTS
Size: 5 Big Kid, Color: White
TTS, comfy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 24, 2025
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Verified Purchase
Amazon Customer
Massapequa, US
★★★★★ 5
True to size
Size: 6.5 Big Kid, Color: Navy/Peel
My a likes the fit. Says they’re comfortable, lines the color.
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Reviewed in the United States on January 12, 2026
P
paul d.
Lake Worth, US
★★★★★ 4
My son destroys shoes, same thing happened here.
Size: 5 Big Kid, Color: Black
For some reason my son started doing the duck walk at school and while performing this little trick for his classmates he ripped the rubber that wraps over top the toe. Now, instead of being glued up and into place, its basically sagging down. Thankfully that's the only thing that's gone wrong with these and honestly this sort of wear and tear is not typical. What I would say is that if your child is rough on shoes, I would pass on these. They are very nice, very light weight and are great for school. However, due to the design, they might not best good for some kids. In terms of sizing and comfort, my son wears a 5 and these fit him very well. He has wide feet like his dad, and these don't bother him at all. He's says they're very comfortable and does enjoy wearing them.
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Reviewed in the United States on September 17, 2025
A
Verified Purchase
ANGELA PEREZ
New York, US
★★★★★ 5
Buen producto
Size: 4.5 Wide Big Kid, Color: Navy/Blue
Recomendado, acorde a la talla y muy cómodos para correr.
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Reviewed in the United States on January 9, 2026
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MommaShark84
Lowell, US
★★★★★ 5
Comfortable Girls shoes
Size: 3 Wide Little Kid, Color: Pink
Cute and came as expected. Daughter loved them.
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Reviewed in the United States on July 2, 2025

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