Recombinant Vaccinia Virus Protein A56 (HA) Protein (His)

Name: Recombinant Vaccinia Virus Protein A56 (HA) Protein (His)
Brand: Beta LifeScience
SKU: BLC-01753P
Availability: InStock

Greater than 85% as determined by SDS-PAGE.

Collections: Cluster of differentiation (cd) proteins, Featured cd protein molecules, Featured viral antigens molecules, Influenza a/b antigen, Recombinant proteins, Viral antigen

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Product Overview

Description	Recombinant Vaccinia Virus Protein A56 (HA) Protein (His) is produced by our E.coli expression system. This is a protein fragment.
Purity	Greater than 85% as determined by SDS-PAGE.
Uniprotkb	P20978
Target Symbol	HA
Synonyms	HA; A56R; Protein A56; Hemagglutinin
Species	Vaccinia virus (strain Copenhagen) (VACV)
Expression System	E.coli
Tag	N-6His
Target Protein Sequence	TPFPQTSKKIGDDATLSCNRNNTNDYVVMSAWYKEPNSIILLAAKSDVLYFDNYTKDKISYDSPYDDLVTTITIKSLTARDAGTYVCAFFMTSPTNDTDKVDYEEYSTELIVNTDSESTIDIILSGSTHSPETSSEKPDYIDNSNCSSVFEIATPEPITDNVEDHTDTVTYTSDSINTVSATSGESTTDETPEPITDKEEDHTVTDTVSYTTVSTSSGIVTTKSTTDDADLYDTYNDNDTVPSTTVGSSTTSISNYKTKDFVE
Expression Range	17-279aa
Protein Length	Partial
Mol. Weight	31.6 kDa
Research Area	Immunology
Form	Liquid or Lyophilized powder
Buffer	Liquid form: default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. Lyophilized powder form: the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution	Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Storage	1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Notes	Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Target Details

Target Function	Prevents cell to cell fusion by interacting with and directing the viral K2 protein on the host plasma membrane. The A56-K2 complex associates with components of the entry fusion complex (EFC) presumably to avoid superinfection and syncytium formation. Via its interaction with C3/VCP protein, protects the infected cell and probably also the extracellular enveloped virus from complement attack.
Subcellular Location	Virion membrane; Single-pass type I membrane protein. Host membrane; Single-pass type I membrane protein. Note=Component of extracellular enveloped virus (EEV) but not intracellular mature virus (IMV). Component of the outermost membrane of EEV.

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.