Description: Recombinant COVID-19 Nucleocapsid Protein C-terminal domain is produced by E.coli expression system with a 6His tag at the N-terminus. Form: Liquid in a 0.2 μm filtered solution of PBS, 2M Urea, pH 7.4. Alternative Names: 2019-nCoV coronavirus NP Protein; 2019-nCoV np Protein; 2019-nCoV novel coronavirus Nucleoprotein ProteinEntrez Gene (Human): QHD43423.2Purity : Greater than 95% as determined by reducing SDS-PAGE.Directions for Use : Please minimize freeze-thaw cycles. Quality Control : Endotoxin: Less than 0.1 ng/µg (1 IEU/µg) as determined by LAL test.Storage/Stability : Store it at -20°C to -80°C for one year. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.