Active Recombinant H7N9 HA, His-tagged
Cat.No. : | HA-458H |
Product Overview : | A DNA sequence encoding the Influenza A virus (A/Hangzhou/3/2013(H7N9)) hemagglutinin (AGJ73503.1) (Met1-Val524) was expressed with a C-terminal polyhistidine tag. |
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- Gene Information
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Description : | H7N9 is a subtype of Influenza virus A. On April 1, 2013, the World Health Organization (WHO) first reported 3 human infections with a new influenza A (H7N9) virus in China. Since then, additional cases have been reported. This new H7N9 virus is an avian (bird) influenza (flu) virus. Influenza (flu) is a respiratory infection in mammals and birds. The virus is divided into three main types (Influenza A, Influenza B, and Influenza C), which are distinguished by differences in two major internal proteins (hemagglutinin (HA) and neuraminidase (NA). Influenza A is further divided into subtypes based on differences in the membrane proteins hemagglutinin (HA) and neuraminidase (NA), which are the most important targets for the immune system. The notation HhNn is used to refer to the subtype comprising the hth discovered Hemagglutinin (HA) protein and the nth discovered neuraminidase (NA) protein. The influenza viral Hemagglutinin (HA) protein is a homo trimer with a receptor binding pocket on the globular head of each monomer. The influenza virus Hemagglutinin (HA) protein is translated in cells as a single protein, HA0, or hemagglutinin precursor protein. For viral activation, hemagglutinin precursor protein (HA0) must be cleaved by a trypsin-like serine endoprotease at a specific site, normally coded for by a single basic amino acid (usually arginine) between the HA1 and HA2 domains of the protein. After cleavage, the two disulfide-bonded protein domains produce the mature form of the protein subunits as a prerequisite for the conformational change necessary for fusion and hence viral infectivity. |
Source : | Baculovirus-Insect cells |
Species : | H7N9 |
Tag : | His |
Form : | Lyophilized from sterile PBS, pH7.4. |
Bio-activity : | 1. Measured by its ability to agglutinate guinea pig red blood cells. HA titer is 2-10 ng/mL for 1% GRBC. It also agglutinates chick red blood cells.2. Measured by its ability to bind with Neu5Aca2-3Galb1-4GlcNAcb-PAA-biotin (01-077) using the Octet RED |
Molecular Mass : | The recombinant hemagglutinin of Influenza A virus (A/Hangzhou/3/2013(H7N9)) comprises 517 amino acids and has a predicted molecular mass of 57.6 kDa. The apparent molecular mass of the protein is approximately 58 kDa in SDS-PAGE under reducing conditions. |
Protein length : | Met1-Val524 |
Endotoxin : | < 1.0 eu per μg of the protein as determined by the LAL method. |
Purity : | >95 % as determined by SDS-PAGE |
Stability : | Samples are stable for up to twelve months from date of receipt at -70℃ |
Storage : | Store it under sterile conditions at -70℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles. |
Reconstitution : | Hardcopy of COA with reconstitution instruction is sent along with the products. |
Products Types
◆ Lysates | ||
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HA-2357HCL | Recombinant H5N3 HA cell lysate | +Inquiry |
HA-1955HCL | Recombinant H1N1 HA cell lysate | +Inquiry |
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For Research Use Only. Not intended for any clinical use. No products from Creative BioMart may be resold, modified for resale or used to manufacture commercial products without prior written approval from Creative BioMart.
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Q&As (6)
Ask a questionHA protein is a glycoprotein that contains thousands of carbohydrates and an amino acid chain consisting of 566 amino acid residues. The structure of HA protein has triple symmetry, consisting of three monomers that form a spiral.
Genetic variants in the HA protein may affect the development and production of influenza vaccines. Because HA protein is an important component of influenza viruses, different subtypes or variants of HA protein may require different vaccines to prepare.
This protein is one of the key factors in the replication process of influenza viruses. When a virus infects a host cell, the receptor-binding region of the HA protein binds to the receptor on the cell surface, allowing the virus to invade the host cell and replicate.
There are currently 18 known HA subtypes of influenza viruses, H1-H18. Among them, the H1, H2, H3, H5, H7, and H9 subtypes are associated with human viruses, while other subtypes are generally associated with animal viruses.
The main physiological function of HA protein is to bind to host cells and mediate the entry of influenza viruses into host cells. It contains specific regions that bind glycoprotein receptors that allow the influenza virus to adhere to them. This is an important link that allows the virus to stably bind and enter the cell.
HA protein is widely used in viral research and drug development. Researchers can use HA proteins to test drugs such as influenza virus activators, antibodies and vaccines, and HA proteins are also widely used to develop novel immunoassays and treatments.
Customer Reviews (2)
Write a reviewThe transport process does not affect the protein quality, and the stability is good.
Higher solubility makes it easy to prepare the desired concentration.
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