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SARS-CoV-2 Spike Protein (B.1.621 - mu, Trimer) (His-Avi Tag,Biotin)

MALS verified 宿主: SARS Coronavirus-2 (SARS-CoV-2), SARS CoV-2 Mu 宿主: HEK-293 Cells Recombinant >95 % as determined by SDS-PAGE.
产品编号 ABIN7199274
发货至: 中国
  • 抗原 See all SARS-CoV-2 Spike 蛋白
    SARS-CoV-2 Spike
    蛋白类型
    Recombinant
    产品特性
    B.1.621 - mu, Trimer
    宿主
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    SARS Coronavirus-2 (SARS-CoV-2), SARS CoV-2 Mu
    资源
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    HEK-293 Cells
    标记
    This SARS-CoV-2 Spike protein is labelled with His-Avi Tag,Biotin.
    原理
    Biotinylated SARS-CoV-2 Spike Trimer (T95I, Y144S, Y145N, R346K, E484K, N501Y, D614G, P681H, D950N), His,Avitag™ (MALS verified)
    序列
    Val 16 - Pro 1213
    特异性
    SARS-CoV-2 Spike Trimer (T95I, Y144S, Y145N, R346K, E484K, N501Y, D614G, P681H, D950N)
    产品特性
    Biotinylated SARS-CoV-2 Spike Trimer, His,Avitag (SPN-C82Ek) is the ectodomain of SARS-CoV-2 spike protein which contains AA Val 16 - Pro 1213 (Accession # QHD43416.1). The mutations T95I, Y144S, Y145N, R346K, E484K, N501Y, D614G, P681H, D950N were identified in the SARS-CoV-2 Mu variant (Pango lineage: B.1.621). The recombinant protein is expressed from human 293 cells (HEK293) with T4 fibritin trimerization motif and a polyhistidine tag at the C-terminus. Proline substitutions (F817P, A892P, A899P, A942P, K986P, V987P) and alanine substitutions (R683A and R685A) are introduced to stabilize the trimeric prefusion state of SARS-CoV-2 S protein and abolish the furin cleavage site, respectively.
    纯度
    >95 % as determined by SDS-PAGE.
    内毒素水平
    Less than 1.0 EU per μg by the LAL method.
    质量等级
    MALS verified
    Top Product
    Discover our top product SARS-CoV-2 Spike 蛋白
  • 应用备注
    This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag (Avitag™). The protein has a calculated MW of 140.0 kDa. The protein migrates as kDa under reducing (R) condition due to glycosylation.
    说明

    Ready-to-use Avitag™ biotinylated protein:
    The product is exclusively produced using the Avitag™ technology. Briefly, a unique 15 amino acid peptide, the Avi tag, is introduced into the recombinant protein during expression vector construction. The single lysine residue in the Avi tag is enzymatically biotinylated by the E. Coli biotin ligase BirA.

    This single-point enzymatic labeling technique brings many advantages for commonly used binding assays. The biotinylation happens on the lysine residue of Avi tag, and therefore does NOT interfere with the target protein's natural binding activities. In addition, when immobilized on an avidin-coated surface, the protein orientation is uniform because the position of the Avi tag in the protein is precisely controlled.

    限制
    仅限研究用
  • 状态
    Lyophilized
    缓冲液
    PBS
    储存条件
    -20 °C
    储存方法
    -20°C
  • 抗原
    SARS-CoV-2 Spike
    Abstract
    SARS-CoV-2 Spike 产品
    别名
    E2 Protein, E2 glycoprotein precursor Protein, Surface Glycoprotein Protein, S Protein
    背景
    Synonyms: Spike,S protein,Spike glycoprotein,S glycoprotein,
    Description: It's been reported that SARS-CoV-2 can infect the human respiratory epithelial cells through interaction with the human ACE2 receptor. The spike protein is a large type I transmembrane protein containing two subunits, S1 and S2. S1 mainly contains a receptor binding domain (RBD), which is responsible for recognizing the cell surface receptor. S2 contains basic elements needed for the membrane fusion.The S protein plays key parts in the induction of neutralizing-antibody and T-cell responses, as well as protective immunity.
    分子量
    140.0 kDa
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