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Product Details
Synonyms
SHPS1, SIRPA, CD172A, BIT, MFR, MYD1, P84, PTPNS1
Source
Biotinylated Human SIRP alpha, Mouse IgG2a Fc,Avitag (SIA-H82A3) is expressed from human 293 cells (HEK293). It contains AA Glu 31 - Arg 370 (Accession # P78324-1).
Predicted N-terminus: Glu 31
Request for sequenceMolecular Characterization
Other Tags and Version Biotin & Other Labeled Version
This protein carries a mouse IgG2a Fc tag at the C-terminus, followed by an Avi tag (Avitag™).
The protein has a calculated MW of 65.9 kDa. The protein migrates as 85-100 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
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.
>95% as determined by SEC-MALS.
Formulation
Lyophilized from 0.22 μm filtered solution in 50 mM Tris, 100 mM Glycine, 25 mM Arginine, 150 mM NaCl, pH7.5 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
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Performance Data
SDS-PAGE
Biotinylated Human SIRP alpha, Mouse IgG2a Fc,Avitag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.
SEC-MALS
The purity of Biotinylated Human SIRP alpha, Mouse IgG2a Fc,Avitag (Cat. No. SIA-H82A3) is more than 95% and the molecular weight of this protein is around 155-175 kDa verified by SEC-MALS.
Report
Bioactivity-ELISA
Immobilized Human CD47, Fc Tag (Cat. No. CD7-H5256) at 2 μg/mL (100 μL/well) can bind Biotinylated Human SIRP alpha, Mouse IgG2a Fc,Avitag (Cat. No. SIA-H82A3) with a linear range of 0.6-10 ng/mL (QC tested).
Protocol
Bioactivity-Flow Cytometry
FACS assay shows that Biotinylated Human SIRP alpha, Mouse IgG2a Fc,Avitag (Cat. No. SIA-H82A3) can bind to Jurkat cell expressing CD47. The concentration of SIRP alpha used is 10 μg/mL (Routinely 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
Background
Recent Advances
Drug Development Progress- English Name：
Signal-regulatory protein alpha
- Category：
- Approved Drugs：
2 Details
- Drugs in Clinical Trials：
19 Details
- Highest Development Stage：
Approved
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