Anti-SARS-CoV-2 N protein Human IgG ELISA Kit


8-128 ng/mL

Cat no : KE30001


Anti-SARS-CoV-2 N protein Human IgG, COVID-19, N protein, nucleocapsid phosphoprotein

Product Information

KE30001 is a qualitative measurement of Anti-SARS-CoV-2 N protein Human IgG in plasma. The principle of the kit is indirect ELISA. N protein recombinant protein has been pre-coated onto microplate well. The samples or standard are added to the well, after incubation the wells are washed and a horseradish peroxidase conjugated anti-Human IgG is added to each well. Producing an complex "Recombinant Protein-human anti-NP IgG antibody-HRP conjugated antibody". after incubation the wells are washed, followed by Tetramethyl-benzidine (TMB) reagent. Solution containing sulfuric acid is used to stop color development and the color intensity which is proportional to the quantity of bound protein is measurable at 450nm with the correction wavelength set at 630 nm.

Product name Anti-SARS-CoV-2 N protein Human IgG ELISA Kit
Tests 1 X 96 well plate
Sample type Serum, Plasma
Assay type Indirect
Sensitivity N/A
Range 8-128 ng/mL
Tested applications Indirect ELISA
Gene ID (NCBI) 43740575

Background Information

Coronaviruses are enveloped viruses with a positive-sense RNA genome and with a nucleocapsid of helical symmetry. Coronavirus nucleoproteins localize to the cytoplasm and the nucleolus, a subnuclear structure, in both virus-infected primary cells and in cells transfected with plasmids that express N protein. Coronavirus N protein is required for coronavirus RNA synthesis, and has RNA chaperone activity that may be involved in template switch. Nucleocapsid protein is a most abundant protein of coronavirus. During virion assembly, N protein binds to viral RNA and leads to formation of the helical nucleocapsid. Nucleocapsid protein is a highly immunogenic phosphoprotein also implicated in viral genome replication and in modulating cell signaling pathways. Because of the conservation of N protein sequence and its strong immunogenicity, the N protein of coronavirus is chosen as a diagnostic tool. COVID-19 antibodies can be produced by a host immune system following exposure to SARS-CoV-2. IgG and IgM antibodies are also known as immunoglobulins G and M, respectively, and are among the antibody isotypes produced by vertebrate immune systems. The ELISA microplate is coated with the SARS-CoV-2 nucleocapsid (N) protein. The coated N protein binds with COVID-19 IgG N antibodies in the serum sample.


Storage Instructions All the reagents are stored at 2-8℃ for 6 months or -20℃ for 12 months. Refer to the protocol for further storage instructions.
Synonyms Anti-SARS-CoV-2 N protein Human IgG, COVID-19, N protein, nucleocapsid phosphoprotein


SpeciesSample TypeTitle

ACS Sens

Electrochemical Capillary-Flow Immunoassay for Detecting Anti-SARS-CoV-2 Nucleocapsid Protein Antibodies at the Point of Care

Authors - Isabelle C. Samper


SARS-CoV-2 nucleocapsid protein, rather than spike protein, triggers a cytokine storm originating from lung epithelial cells in patients with COVID-19

Authors - Ying-Chuan Wang

J Autoimmun

Unique autoantibody prevalence in long-term recovered SARS-CoV-2-infected individuals.

Authors - Holger Lingel

Front Immunol

An Integrated Platform for Serological Detection and Vaccination of COVID-19.

Authors - Sung-Chan Wei

Front Med

Early assessment of the safety and immunogenicity of a third dose (booster) of COVID-19 immunization in Chinese adults.

Authors - Yuntao Zhang

Front Med

Durability of neutralizing antibodies and T-cell response post SARS-CoV-2 infection.

Authors - Yun Tan