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HCoV-HKU1 (isolate N5) Spike Trimer Protein, His Tag (MALS verified)

HCoV-HKU1 (isolate N5) Spike Trimer, His Tag (SPN-H52H5) is the ectodomain of HCoV-HKU1 (isolate N5) spike protein which contains AA Ala 13 - Asn 1276 (Accession # Q0ZME7-1) . The recombinant protein is expressed from human 293 cells (HEK293) with T4 fibritin trimerization motif and a polyhistidine tag at the C-terminus. The S1/S2 furin-recognition site 752-RRKRR-756 is mutated to GGSGS to generate the uncleaved protein. Proline substitutions (N1067P, L1068P) are introduced to stabilize the trimeric prefusion state of the spike protein.

Product Specifications

Background

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.

Specifications

This protein carries a polyhistidine tag at the C-terminus. The protein has a calculated MW of 145.5 kDa. The protein migrates as 180-210 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.

Accession Number

Q0ZME7-1

Expression Region

Ala 13 - Asn 1276

Host

HEK293

Target

Spike protein

Conjugation

Unconjugated

Tag

C-10xHis

Source

HCoV-HKU1

Stability

● -20°C to -70°C for 12 months in lyophilized state; ● -70°C for 3 months under sterile conditions after reconstitution. For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Endotoxin

1.0 EU per μg

Purity

95%

Format

Powder

Buffer

0.1 M Sodium citrate, pH5.5

Additives

Trehalose

Molecular Weight

145.5 kDa

Shipping Conditions

RT

Storage Conditions

-20°C

Package Size

50ug*1

Product Datasheet

Https://www.acrobiosystems.com/static/main/products/pdf/ds/SPN-H52H5.pdf

Species

HCoV-HKU1

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