NR-52308来自SARS相关冠状病毒2的刺突糖蛋白(稳定),Wuhan-Hu-1带有C末端组氨酸标签,来自杆状病毒(蛋白质)的重组
A recombinant form of the spike (S) glycoprotein from severe acute respiratory syndrome-related coronavirus 2 (SARS-CoV-2), Wuhan-Hu-1 (GenPept: QJE37812) was produced by transfection of purified plasmid in SF9 insect cells using a baculovirus expression system and purified by nickel affinity chromatography. NR-52308 lacks the signal sequence and contains 1196 residues (ectodomain) of the SARS-CoV-2 spike glycoprotein; the recombinant protein was modified to remove the polybasic S1/S2 cleavage site (RRAR to A; residues 682 to 685), stabilized with a pair of mutations (K986P and V987P, wild type numbering; GenPept: QHD43416) and includes a thrombin cleavage site, T4 foldon trimerization domain and C-terminal hexa-histidine tag. NR-52308 has a theoretical molecular weight of 137,600 daltons. The crystal structure for trimeric S glycoprotein from SARS-CoV-2 has been solved at 3.20 angstrom resolution (PDB: 6VYB).
Note: For a detailed protocol and list of related items, see https://labs.icahn.mssm.edu/krammerlab/covid-19/
The S glycoprotein mediates viral binding to the host angiotensin converting enzyme 2 (ACE2). This protein forms a trimer, and when bound to a host receptor, allows fusion of the viral and cellular membranes. The S protein is a target for neutralizing antibodies.
NR-52308 reacts with monoclonal anti-histidine tag in western blot analysis. NR-52308 is intended for western blot, ELISA and animal vaccination.
Each vial of NR-52308 contains purified recombinant protein in phosphate buffered saline (PBS).
Note: The long-term stability of this preparation is not known. It is recommended that users confirm the activity of the product if not used within three months of receipt.
Additional information and tools are available at ViPR (Virus Pathogen Resource).
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