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Description
Nucleocapsid His Tag Protein, SARS-CoV-2Product Specification Species SARS CoV 2 Synonyms SARS CoV 2 coronavirus NP Protein; SARS CoV 2 np Protein; SARS CoV 2 novel coronavirus Nucleoprotein Protein Accession P0DTC9 Amino Acid Sequence
Product Specification
| Species | SARS-CoV-2 |
| Synonyms | SARS-CoV-2 coronavirus NP Protein; SARS-CoV-2 np Protein; SARS-CoV-2 novel coronavirus Nucleoprotein Protein |
| Accession | P0DTC9 |
| Amino Acid Sequence | MSDNGPQNQRNAPRITFGGPSDSTGSNQNGERSGARSKQRRPQGLPNNTASWFTALTQHGKEDLKFPRGQGVPINTNSSPDDQIGYYRRATRRIRGGDGKMKDLSPRWYFYYLGTGPEAGLPYGANKDGIIWVATEGALNTPKDHIGTRNPANNAAIVLQLPQGTTLPKGFYAEGSRGGSQASSRSSSRSRNSSRNSTPGSSRGTSPARMAGNGGDAALALLLLDRLNQLESKMSGKGQQQQGQTVTKKSAAEASKKPRQKRTATKAYNVTQAFGRRGPEQTQGNFGDQELIRQGTDYKHWPQIAQFAPSASAFFGMSRIGMEVTPSGTWLTYTGAIKLDDKDPNFKDQVILLNKHIDAYKTFPPTEPKKDKKKKADETQALPQRQKKQQTVTLLPAADLDDFSKQLQQSMSSADSTQAGGGGSHHHHHHHHHH. |
| Expression System | E.coli |
| Molecular Weight | 47.3 kDa (Reducing) |
| Purity | ＞95%, by SDS-PAGE under reducing conditions |
| Endotoxin | <2EU/μg |
| Conjugation | Unconjugated |
| Tag | His Tag |
| Physical Appearance | Lyophilized Powder |
| Storage Buffer | 20mM PB, 100mM NaCl, pH7.4 |
| Reconstitution | Reconstitute at less than 1 mg/mL according to the size in ultrapure water after rapid centrifugation . |
| Stability & Storage | · 12 months from date of receipt, lyophilized powder stored at -20 to -80℃. · 3 months, -20 to -80℃ under sterile conditions after reconstitution. · 1 week, 2 to 8℃ under sterile conditions after reconstitution. · Please avoid repeated freeze-thaw cycles. |
Background
Nucleocapsid, nucleocapsid protein, is an important structural protein of novel coronavirus SARS-CoV-2, which is responsible for wrapping the virus RNA genome to form a long spiral nucleocapsid complex (Long Helical Ribonucleocapsid complex, RNP), and then assemble into virus particles. Nucleocapsid can induce host immune response. Among the infected cells, the abundance of Nucleocapsid is the highest and the detection is the most convenient. In SARS-CoV-2 mutants, Nucleocapsid is highly conserved. The antigen detection kit developed for this protein can effectively avoid mutation escape and improve the detection accuracy. The high abundance and high conservation of Nucleocapsid make it the most ideal antigen for the development of SARS-CoV-2 antigen detection kit and play an important role in SARS-CoV-2 detection.
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4.8 ★★★★★
Based on 1513 reviews
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Product Reviews
★★★★★ 5
Great for dogs like to to chew and like squeakers!
Color: Mixed, Size: Medium, Color: Mixed, Size: Medium
Harder to hold up to his bites. He started to pounce on it to make it squeak like he was honking the horn. He likes it and carries it around the house. Its a must buy for medium to large dogs
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Reviewed in the United States on December 18, 2025
★★★★★ 3
Dog & I Disagree/ Aggressive Chewers Short-Term Toy
Color: Red, Size: Medium
This is day two, and, My dog LOVED this toy! He loved the squeaking aspect, chewing the center squeaky area so he could squeak it himself (adorable!). He also loved playing fetch with it, but he loves fetch, but this was fun for him as it wasn't a ball. The chewing enjoyment is where it was at for him as he Loves to chew, and it was a nice weight that he could really carry around and have fun.
I did love this toy, as it was cute, and he was having such a great time with it! Until his teeth kept getting stuck in the rubber around the center squeaker area when getting it to squeak by himself. That was almost it, but he LOVES this toy, so I gave it another chance. Then, one of his teeth got stuck in the center and his teeth became hooked on the top of the outer round and he couldn't get it out of his mouth. That was the End.
Perhaps more size options, small, medium, and large, with safer spaces, at each size, between the squeaker area and the outer ring- so they can squeak it, yet avoid getting their teeth stuck and/or their mouths stuck open. I would say the durability is lacking, as, while similar, a Benebone it is not, though it gets sharp too-ouch! He had the outer rounds pretty tore up on the first day, and even more tore up today, so if you have a truly aggressive chewer, this is also a short term toy. This is a fun toy and many love it, though many more could love it with a few modifications.
As it is, I did not find it a value for my money, even with as much fun as he had; at this time, the safety aspect and the ease with which he chewed it requires I look somewhere else. I hope this helps.
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Reviewed in the United States on January 2, 2026
★★★★★ 1
Plastic cut my dog
Color: Mixed, Size: Medium
If your pet chews a lot do not buy. My dog chewed the plastic and cut her nose when grabbing the toy because of how sharp it became.
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Great for aggressive chewers
Color: Mixed, Size: Medium
This toy held up well. My dog is a very aggressive chewer and will shred apart any toy she can. She was not able to tear up this one. I have not found many toys that she doesn't destroy
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Best Balls Ever!!!
Size: Medium
These are the best balls ever! We have 2 very active ball loving dogs and these bounce very well and they actually hold up with active play and chewing. They still look brand new after daily use for months!
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Reviewed in the United States on May 15, 2026