Biotinylated Recombinant SARS-CoV-2 Spike S1

OVERVIEW
CATALOG # bs-46004P-Biotin
REFERENCE # COV_VM4S1B
PRODUCT NAME
Biotinylated Recombinant SARS-CoV-2 Spike S1
CROSS REACTIVE SPECIES DETAILS
SARS-CoV-2
CONJUGATION Biotinylated
SOURCE Biotinylated SARS-CoV-2 Spike S1 is expressed from mammalian with a His-tag and Avi at the C-terminal.
It contains Gln 14-Arg 683.

EXPRESSION SYSTEM
HEK293
TAG His-Avi
MOLECULAR WEIGHT The protein has a predicted MW of 77.9 kDa. Due to glycosylation, the protein migrates to 110-120kDa based on Bis-Tris PAGE result.
ENDOTOXIN
Less than 1EU per ug by the LAL method.
PURITY: > 95% as determined by Bis-Tris PAGE
> 95% as determined by HPLC

FORMULATION
Lyophilized from 0.22um filtered solution in 20mM PB (pH 7.4). Normally 5 % trehalose is added as protectant before lyophilization.
STORAGE The product should be stored at -70℃ or -20℃.
TARGET
ACCESSION
QHD43416.1
BACKGROUND The spike protein (S) of coronavirus (CoV) attaches the virus to its cellular receptor, angiotensin-converting enzyme 2 (ACE2). A defined receptor-binding domain (RBD) on S mediates this interaction. The S protein plays key parts in the induction of neutralizing-antibody and T-cell responses, as well as protective immunity.