Alternative Name(s):

Spike glycoprotein(S glycoprotein)(E2)(Peplomer protein) [Cleaved into: Spike protein S1; Spike protein S2; Spike protein S2']

Species: (Organism)

Avian infectious bronchitis virus (strain D274) (IBV)

Gene Names:

S

Tag info:

C-terminal 6xHis-tagged

Target Protein AA Sequence:

ASDYMYGSYHPSCKFRLETINNGLWFNSLSVSLGYGPIQGGCKQSVFANRATCCYAYSYNGPSLCKGVYRGELTKSFECGLLVFVTKTDGSRIQTRNEPFTLTQHNYNNITLDRCVEYNIYGRVGQGFITNVTNYAINYNYLADGGMAILDTSGAIDIFVVQGEYGLNYYKVNPCEDVNQQFVVSGGKLVGILTSRNETGSQPLENQFYIKIINGTRRSRR

Expression Region:

318-538aa

Subcellular Location:

Tissue Specificity:

Protein Length:

Partial

Pathway:

Mol. Weight:

27.2 kDa

Purity:

Greater than 85% as determined by SDS-PAGE.

Form:

Liquid or Lyophilized powder

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.

Research Areas:

Microbiology

Function:

Involvement in disease:

Relevance:

[Spike protein S1]: attaches the virion to the host cell membrane by interacting with sialic acids, initiating the infection.; [Spike protein S2]: mediates fusion of the virion and cellular membranes by acting as a class I viral fusion protein. Under the current model, the protein has at least 3 conformational states: pre-fusion native state, pre-hairpin intermediate state, and post-fusion hairpin state. During viral and target cell membrane fusion, the coiled coil regions (heptad repeats) assume a trimer-of-hairpins structure, positioning the fusion peptide in close proximity to the C-terminal region of the ectodomain. The formation of this structure appears to drive apposition and subsequent fusion of viral and target cell membranes.; [Spike protein S2']: Acts as a viral fusion peptide after S2 cleavage occurring upon virus endocytosis.

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℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.

Protein Families:

Reference:

"Nucleotide sequence of the gene coding for the peplomer protein (= spike protein) of infectious bronchitis virus, strain D274." Jordi B.J.A.M., Kremers D.A.W.M., Kusters H.G., van der Zeijst B.A.M. Nucleic Acids Res. 17:6726-6726(1989)