1. Recombinant Proteins
  2. Viral Proteins
  3. SARS-CoV-2 Proteins
  4. SARS-CoV-2 Nucleocapsid Proteins
  5. SARS-CoV-2 N Protein (NP)
  6. SARS-CoV-2 Nucleocapsid Protein, Human (His)

SARS-CoV-2 Nucleocapsid Protein, Human (His)

Cat. No.: HY-P72034
COA Handling Instructions

The SARS-CoV-2 nucleocapsid protein plays a crucial role in assembling the virion, forming the helical ribonucleocapsid (RNP), and interacting with the viral genome and membrane protein M. In addition to its structural function, it also enhances subgenomic viral RNA transcription and overall replication. SARS-CoV-2 Nucleocapsid Protein, Human (His) is the recombinant human-derived SARS-CoV-2 Nucleocapsid protein, expressed by E. coli , with N-6*His labeled tag. The total length of SARS-CoV-2 Nucleocapsid Protein, Human (His) is 419 a.a., with molecular weight of ~48 kDa.

For research use only. We do not sell to patients.

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  • Biological Activity

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Description

The SARS-CoV-2 nucleocapsid protein plays a crucial role in assembling the virion, forming the helical ribonucleocapsid (RNP), and interacting with the viral genome and membrane protein M. In addition to its structural function, it also enhances subgenomic viral RNA transcription and overall replication. SARS-CoV-2 Nucleocapsid Protein, Human (His) is the recombinant human-derived SARS-CoV-2 Nucleocapsid protein, expressed by E. coli , with N-6*His labeled tag. The total length of SARS-CoV-2 Nucleocapsid Protein, Human (His) is 419 a.a., with molecular weight of ~48 kDa.

Background

The SARS-CoV-2 Nucleocapsid Protein assumes a pivotal role in virion assembly, orchestrating the packaging of the positive-strand viral genome RNA into a helical ribonucleocapsid (RNP) and establishing crucial interactions with the viral genome and membrane protein M. Beyond its structural functions, this protein significantly contributes to the efficiency of subgenomic viral RNA transcription and overall viral replication. Notably, it exhibits an additional role in modulating host chemokine function, a mechanism that may favor viral replication and transmission. The Nucleocapsid Protein achieves this modulation by being secreted into the extracellular space, where it competes with host chemokines for binding to host glycosaminoglycans (GAG), thus potentially disrupting host defense mechanisms and supporting the viral life cycle.

Biological Activity

1.Measured by its binding ability in a functional ELISA. Immobilized SARS-CoV-2-N at 2 μg/mL can bind SARS-CoV-2-N Antibody and the EC50 is 0.9081 -8.795 ng/mL.
2.Immobilized SARS-CoV-2 Nucleocapsid protein, His Tag at 1 μg/mL (100 μL/well) can bind Anti-SARS-CoV- 2 Nucleocapsid Antibody. The ED50 for this effect is 5.118 ng/mL.

Species

Human

Source

E. coli

Tag

N-6*His

Accession

P0DTC9 (M1-A419)

Gene ID

43740575  [NCBI]

Molecular Construction
N-term
6*His
Nucleocapsid (M1-A419)
Accession # P0DTC9
C-term
Synonyms
Nucleocapsid protein
AA Sequence

MSDNGPQNQRNAPRITFGGPSDSTGSNQNGERSGARSKQRRPQGLPNNTASWFTALTQHGKEDLKFPRGQGVPINTNSSPDDQIGYYRRATRRIRGGDGKMKDLSPRWYFYYLGTGPEAGLPYGANKDGIIWVATEGALNTPKDHIGTRNPANNAAIVLQLPQGTTLPKGFYAEGSRGGSQASSRSSSRSRNSSRNSTPGSSRGTSPARMAGNGGDAALALLLLDRLNQLESKMSGKGQQQQGQTVTKKSAAEASKKPRQKRTATKAYNVTQAFGRRGPEQTQGNFGDQELIRQGTDYKHWPQIAQFAPSASAFFGMSRIGMEVTPSGTWLTYTAAIKLDDKDPNFKDQVILLNKHIDAYKTFPPTEPKKDKKKKADETQALPQRQKKQQTVTLLPAADLDDFSKQLQQSMSSADSTQA

Molecular Weight

Approximately 48-50 kDa

Purity
  • Greater than 90% as determined by reducing SDS-PAGE.
Appearance

Lyophilized powder

Formulation

Lyophilized from a 0.2 μm solution of 20 mM Tris-HC1, 0.5 M NaCl, 6% Trehalose, pH 8.0 or 50 mM Tris-HCL, 300 mM NaCl, pH 8.0.

Endotoxin Level

<1 EU/μg, determined by LAL method.

Reconstitution

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O.

Storage & Stability

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Shipping

Room temperature in continental US; may vary elsewhere.

Documentation

SARS-CoV-2 Nucleocapsid Protein, Human (His) Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

  • Reconstitution Calculator

  • Dilution Calculator

  • Specific Activity Calculator

The reconstitution calculator equation

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration
= ÷

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

The specific activity calculator equation

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)
Unit/mg = 106 ÷ ng/mL

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SARS-CoV-2 Nucleocapsid Protein, Human (His)
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