SARS-CoV S Protein (S577A, sf9, His)

SARS-CoV spike glycoprotein 2 (S2) is a subunit of SARS-CoV Spike glycoprotein, among with S1 and S2'. S2 (668-1255) mediates fusion of the virion and cellular membranes by acting as a class I viral fusion protein, during endocytosis, S2 is cleaved into S2' (798-1255). Internalization into host cell endosomes induces S glycoprotein conformational changes, potentially unmasking the fusion peptide of S2 through cathepsin CTSL proteolysis. SARS-CoV S Protein (S577A, sf9, His) is the recombinant Virus-derived SARS-CoV S protein, expressed by Sf9 insect cells , with C-His labeled tag.

SARS-CoV spike glycoprotein 2 (S2) is a subunit of SARS-CoV Spike glycoprotein, among with S1 and S2'. S1 (14-667) can attaches the virion to the cell membrane by interacting with host receptor, initiating the infection. S2 (668-1255) mediates fusion of the virion and cellular membranes by acting as a class I viral fusion protein, during endocytosis, S2 is cleaved into S2' (798-1255).
S protein orchestrates viral entry by attaching the virion to the cell membrane through interactions with human ACE2 and CLEC4M/DC-SIGNR receptors. Following attachment, internalization into host cell endosomes induces S glycoprotein conformational changes, potentially unmasking the fusion peptide of S2 through cathepsin CTSL proteolysis^[1][2].

Virus

Sf9 insect cells

C-His

NP_828851.1 (S14-P1195)

1489668  [NCBI]

Partial

SDLDRCTTFDDVQAPNYTQHTSSMRGVYYPDEIFRSDTLYLTQDLFLPFYSNVTGFHTINHTFGNPVIPFKDGIYFAATEKSNVVRGWVFGSTMNNKSQSVIIINNSTNVVIRACNFELCDNPFFAVSKPMGTQTHTMIFDNAFNCTFEYISDAFSLDVSEKSGNFKHLREFVFKNKDGFLYVYKGYQPIDVVRDLPSGFNTLKPIFKLPLGINITNFRAILTAFSPAQDIWGTSAAAYFVGYLKPTTFMLKYDENGTITDAVDCSQNPLAELKCSVKSFEIDKGIYQTSNFRVVPSGDVVRFPNITNLCPFGEVFNATKFPSVYAWERKKISNCVADYSVLYNSTFFSTFKCYGVSATKLNDLCFSNVYADSFVVKGDDVRQIAPGQTGVIADYNYKLPDDFMGCVLAWNTRNIDATSTGNYNYKYRYLRHGKLRPFERDISNVPFSPDGKPCTPPALNCYWPLNDYGFYTTTGIGYQPYRVVVLSFELLNAPATVCGPKLSTDLIKNQCVNFNFNGLTGTGVLTPSSKRFQPFQQFGRDVSDFTDSVRDPKTSEILDISPCAFGGVSVITPGTNASSEVAVLYQDVNCTDVSTAIHADQLTPAWRIYSTGNNVFQTQAGCLIGAEHVDTSYECDIPIGAGICASYHTVSLLRSTSQKSIVAYTMSLGADSSIAYSNNTIAIPTNFSISITTEVMPVSMAKTSVDCNMYICGDSTECANLLLQYGSFCTQLNRALSGIAAEQDRNTREVFAQVKQMYKTPTLKYFGGFNFSQILPDPLKPTKRSFIEDLLFNKVTLADAGFMKQYGECLGDINARDLICAQKFNGLTVLPPLLTDDMIAAYTAALVSGTATAGWTFGAGAALQIPFAMQMAYRFNGIGVTQNVLYENQKQIANQFNKAISQIQESLTTTSTALGKLQDVVNQNAQALNTLVKQLSSNFGAISSVLNDILSRLDKVEAEVQIDRLITGRLQSLQTYVTQQLIRAAEIRASANLAATKMSECVLGQSKRVDFCGKGYHLMSFPQAAPHGVVFLHVTYVPSQERNFTTAPAICHEGKAYFPREGVFVFNGTSWFITQRNFFSPQIITTDNTFVSGNCDVVIGIINNTVYDPLQPELDSFKEELDKYFKNHTSPDVDLGDISGINASVVNIQKEIDRLNEVAKNLNESLIDLQELGKYEQYIKWP

≥ 90%, as determined by reducing SDS-PAGE.

<1 EU/μg, determined by LAL method.