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Product Details
Synonyms
Prefusion glycoprotein F0/pre-F protein (RSV)
Source
Biotinylated Human respiratory syncytial virus A (strain A2) Pre-F0, His,Avitag (RSF-V82E7) is expressed from human 293 cells (HEK293).
Molecular Characterization
This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag (Avitag™).
The protein has a calculated MW of 57.8 kDa. The protein migrates as 60-65 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
The protein is designed as a trimer.
Labeling
Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.
Protein Ratio
Passed as determined by the SABA assay / HABA assay / binding ELISA.
Purity
>95% as determined by SDS-PAGE.
Formulation
Lyophilized from 0.22 μm filtered solution in 0.1 M Sodium citrate, 150 mM NaCl, pH5.5 with trehalose as protectant.
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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
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Data Display
SDS-PAGE
Biotinylated Human respiratory syncytial virus A (strain A2) Pre-F0, His,Avitag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95% (With Star Ribbon Pre-stained Protein Marker).
SEC-MALS
The purity of Biotinylated Human respiratory syncytial virus A (strain A2) Pre-F0, His,Avitag (Cat. No. RSF-V82E7) is more than 85% and the molecular weight of this protein is around 185-225 kDa verified by SEC-MALS.
Report
Bioactivity-ELISA
Immobilized Anti-Fusion glycoprotein F0 Antibody, Human IgG1 (D25) at 5 μg/mL (100 μL/well) can bind Biotinylated Human respiratory syncytial virus A (strain A2) Pre-F0, His,Avitag (Cat. No. RSF-V82E7) with a linear range of 0.1-8 ng/mL (QC tested).
Protocol
Immobilized Anti-Fusion glycoprotein F0 Antibody, Mouse IgG2a (101F) at 5 μg/mL (100 μL/well) can bind Biotinylated Human respiratory syncytial virus A (strain A2) Pre-F0, His,Avitag (Cat. No. RSF-V82E7) with a linear range of 0.2-16 ng/mL (QC tested).
Protocol
Immobilized Recombinant Mouse Anti-RSV F Antibody (5C4) at 5 μg/mL (100 μL/well) can bind Biotinylated Human respiratory syncytial virus A (strain A2) Pre-F0, His,Avitag (Cat. No. RSF-V82E7) with a linear range of 0.2-16 ng/mL (QC tested).
Protocol
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FAQ
- product
Can lyophilized proteins remain stable during room-temperature shipping or temporary room-temperature exposure?
In general, lyophilized proteins remain stable during room-temperature shipping or temporary exposure to room-temperature conditions.
Many ACROBiosystems recombinant proteins are supplied in lyophilized (freeze-dried) form. The lyophilization process effectively removes moisture from the product, helping reduce degradation-related reactions and improve protein stability during transportation and storage.
To evaluate the stability of lyophilized proteins under normal temperature conditions, ACROBiosystems conducted a stability study on 11 representative lyophilized protein products at 37°C. The study demonstrated that these proteins maintained good quality stability after storage at 37°C for approximately 20 days. Based on these validation results, temporary room-temperature exposure during shipping or handling is generally not expected to have a significant impact on product quality or downstream application performance.
To ensure optimal long-term stability, products should be stored according to the storage conditions specified in the product Certificate of Analysis (COA) upon receipt.
Supporting Document
- Product
What do “pre” and “post” refer to in the names of viral proteins?
In virology, “pre” refers to the conformation of a viral surface glycoprotein before fusion with the host cell membrane, while “post” refers to the conformation after membrane fusion and entry into the host cell. Both are naturally occurring states in the viral life cycle. Because the “pre” conformation represents a critical stage before viral entry, antibodies designed against this state often exhibit stronger neutralizing activity and are therefore more effective in preventing infection.
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