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SARS-CoV-2 Spike Protein (BA.4 - Omicron, BA.5 - Omicron, RBD) (His-Avi Tag,Biotin)

MALS verified 宿主: SARS Coronavirus-2 (SARS-CoV-2), SARS CoV-2 Omicron 宿主: HEK-293 Cells Recombinant >95 % as determined by SDS-PAGE.
产品编号 ABIN7199356
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
    BA.4 - Omicron, BA.5 - Omicron, RBD
    宿主
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    SARS Coronavirus-2 (SARS-CoV-2), SARS CoV-2 Omicron
    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 RBD, His,Avitag™ (BA.4&BA.5/Omicron) (MALS verified)
    序列
    Arg 319 - Lys 537
    产品特性
    Biotinylated SARS-CoV-2 Spike RBD, His,Avitag (BA.4&BA.5/Omicron) is expressed from human 293 cells (HEK293). It contains AA Arg 319 - Lys 537 (Accession # QHD43416.1 (G339D, S371F, S373P, S375F, T376A, D405N, R408S, K417N, N440K, L452R, S477N, T478K, E484A, F486V, Q498R, N501Y, Y505H). The spike mutations are identified on the SARS-CoV-2 Omicron variant (Pango lineage: BA.4 and BA.5, GISAID clade: GRA).
    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 28.3 kDa. The protein migrates as 34-37 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, pH 7.4
    储存条件
    -20 °C
    储存方法
    For long term storage, the product should be stored at lyophilized state at -20°C or lower.
  • Meng, Zha, Zhou, Cao, Jiang, Zhu, Li, Lu, Zhang, Yang, Feng, Gu, Tang, Jiang, Li, Lavillette, Zhang: "A Spike-destructing human antibody effectively neutralizes Omicron-included SARS-CoV-2 variants with therapeutic efficacy." in: PLoS pathogens, Vol. 19, Issue 1, pp. e1011085, (2023) (PubMed).

  • 抗原
    SARS-CoV-2 Spike
    别名
    SARS-CoV-2 Spike (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 RBD,Spike glycoprotein Receptor-binding domain,S glycoprotein RBD,Spike protein RBD,
    Description: It's been reported that Coronavirus 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
    28.3 kDa
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