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Recombinant Human Novel Coronavirus Spike glycoprotein(S),partial,Biotinylated

SKU : BHP10511870

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CUSABIO TECHONOLOGY LLC

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Mfr.No.	CSB-MP3324GMY1k1-B
Alternative Names	(S glycoprotein)(E2)(Peplomer protein)
Reconstitution	We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Tag	N-terminal 10xHis-Avi-tagged and C-terminal Myc-tagged
Molecular Weight	31.7 kDa
Relevance	(Spike protein S1): Attaches the virion to the cell membrane by interacting with host receptor, initiating the infection. The major receptor is host ACE2. When S2/S2' has been cleaved, binding to the receptor triggers direct fusion at the cell membrane. When S2/S2' has not been cleaved, binding to the receptor results in internalization of the virus by endocytosis leading to fusion of the virion membrane with the host endosomal membrane. Alternatively, may use NRP1/NRP2 and integrin as entry receptors. The use of NRP1/NRP2 receptors may explain the tropism of the virus in human olfactory epithelial cells, which express these molecules at high levels but ACE2 at low levels. The stalk domain of S contains three hinges, giving the head unexpected orientational freedom. ; (Spike protein S2): Precursor of the fusion protein processed in the biosynthesis of the S protein and the formation of virus particle. Mediates fusion of the virion and cellular membranes by functioning as a class I viral fusion protein. Contains two viral fusion peptides that are unmasked after cleavage. The S2/S2' cleavage occurs during virus entry at the cell membrane by host TMPRSS2 or during endocytosis by host CSTL. In either case, this triggers an extensive and irreversible conformational change leading to fusion of the viral envelope with the cellular cytoplasmic membrane, releasing viral genomic RNA into the host cell cytoplasm. Under the current model, the protein has at least three conformational states: pre-fusion native state, pre-hairpin intermediate state, and post-fusion hairpin state. During fusion of the viral and target cell membranes, the coiled coil regions (heptad repeats) adopt a trimer-of-hairpins structure and position the fusion peptide in close proximity to the C-terminal region of the ectodomain. Formation of this structure appears to promote apposition and subsequent fusion of viral and target cell membranes. ; (Spike protein S2'): Subunit of the fusion protein that is processed upon entry into the host cell. Mediates fusion of the virion and cellular membranes by functioning as a class I viral fusion protein. Contains a viral fusion peptide that is unmasked after S2 cleavage. This cleavage can occur at the cell membrane by host TMPRSS2 or during endocytosis by host CSTL. In either case, this triggers an extensive and irreversible conformational change that leads to fusion of the viral envelope with the cellular cytoplasmic membrane, releasing viral genomic RNA into the host cell cytoplasm. Under the current model, the protein has at least three conformational states: pre-fusion native state, pre-hairpin intermediate state, and post-fusion hairpin state. During fusion of the viral and target cell membranes, the coiled coil regions (heptad repeats) adopt a trimer-of-hairpins structure and position the fusion peptide in close proximity to the C-terminal region of the ectodomain. Formation of this structure appears to promote apposition and subsequent fusion of viral and target cell membranes.
Source	Mammalian cell
Endotoxin Level	Not test.
Form	Liquid or Lyophilized powder
Notes	Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Bioactivity	Not Test
Expression Region	319-541aa
Lead Time	18-28 business days
Protein Length	Partial

Uniprot	P0DTC2
Gene Name	S
Research Area	Cancer
Sequence	RVQPTESIVRFPNITNLCPFGEVFNATRFASVYAWNRKRISNCVADYSVLYNSASFSTFKCYGVSPTKLNDLCFTNVYADSFVIRGDEVRQIAPGQTGKIADYNYKLPDDFTGCVIAWNSNNLDSKVGGNYNYLYRLFRKSNLKPFERDISTEIYQAGSTPCNGVEGFNCYFPLQSYGFQPTNGVGYQPYRVVVLSFELLHAPATVCGPKKSTNLVKNKCVNF

Buffer	If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Purity	Greater than 90% as determined by SDS-PAGE.
Storage	The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.

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SKU	Supplier No.	Size	Your price	Quantity
BHP10511870	CSB-MP3324GMY1k1-B	1mg	$4700		Add to Cart
BHP10511870	CSB-MP3324GMY1k1-B	100ug	$875		Add to Cart
BHP10511870	CSB-MP3324GMY1k1-B	20ug	$425		Add to Cart

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