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COADS MSDS

HCMV (strain AD169) Glycoprotein B (gB), His Tag (MALS verified)

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COADS MSDS
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Product Details
Performance Data
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  • Product Details
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Synonyms

Glycoprotein B/gB (HCMV)

Source

HCMV Glycoprotein B (gB) Protein (Strain AD169), His Tag is the ectodomain of HCMV (strain AD169) glycoprotein B (gB) which contains AA Ser 25 - Phe 706 (Accession # P06473 (Y155G, I156H, Y157R, Y206H, W240A, L241T, Y242H, R456S, R459S)). The recombinant protein is expressed from human 293 cells (HEK293) with a polyhistidine tag at the C-terminus. Mutations Y155G, I156H, Y157R, Y206H, W240A, L241T, Y242H and R456S, R459S are introduced to stabilize the trimeric postfusion state of HCMV gB protein and abolish the furin cleavage site, respectively.

Predicted N-terminus: Ser 25

Molecular Characterization

This protein carries a polyhistidine tag at the C-terminus.

The protein has a calculated MW of 79.6 kDa. The protein migrates as 90-120 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

The protein is designed as a trimer.

Endotoxin

Less than 1.0 EU per μg by the LAL method / rFC method.

Purity

>95% as determined by SDS-PAGE.

>95% as determined by SEC-MALS.

Formulation

Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.

Contact us for customized product form or formulation.

Reconstitution

Please see Certificate of Analysis for specific instructions.

For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

Shipping and Storage

This product is shipped at ambient temperature.

For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Please avoid repeated freeze-thaw cycles.

This product is stable after storage at:
  • -20°C to -70°C for 12 months in lyophilized state;
  • -70°C for 3 months under sterile conditions after reconstitution.
ACRO Quality Management System

Background

Human cytomegalovirus is a species of the Cytomegalovirus genus of viruses, which in turn is a member of the viral family known as Herpesviridae or herpesviruses. It is typically abbreviated as HCMV or, commonly but more ambiguously, as CMV. CMV Virus Envelope Glycoportein B (CMV-GB) can be cleaved into glycoprotein GP55. Envelope glycoprotein that plays a role in host cell entry, cell to-cell virus transmission, and fusion of infected cells. CMV-GB may be involved in the initial attachment via binding to heparan sulfate together with the gM/gN complex that binds heparin with higher affinity. Furthermore, CMV-GB can interact with host integrin ITGB1, PDGFRA and EGFR that likely serve as postattachment entry receptors. Also, CMV-GB participates in the fusion of viral and cellular membranes leading to virus entry into the host cell. Membrane fusion is mediated by the fusion machinery composed at least of gB and the heterodimer gH/gL.