What does an HA tag do?

The HA (hemagglutinin) tag is derived from the human influenza virus HA protein. It is well characterized and is used extensively as a general antibody epitope tag. HA tag antibodies provide a dependable method for the detection and purification of tagged target proteins without a protein-specific antibody or probe.

What is HA sequence?

HA Tag / Hemagglutinin Tag Human influenza hemagglutinin (HA) is a surface glycoprotein required for the infectivity of the human virus. The HA tag is derived from the HA-molecule corresponding to amino acids 98-106. It has been extensively used as a general epitope tag in expression vectors.

How many kDa is HA tag?

1.1 kDa
The HA tag (YPYDVPDYA-tag) itself has a molecular weight of 1.1 kDa and is a linear epitope derived from amino acids 98-106 of the HA protein. It is used extensively as a general epitope tag in expression vectors (2, 3).

What is Flag ha?

The FLAG® HA tandem epitope system consists of small epitopes tags that are not eukaryotic derived. The hydrophilic character of the FLAG® HA peptide increases the likelihood that the dual epitope will be located on the surface of the fusion protein where it is accessible for the antibody-antigen interaction.

How do you elute a HA tag?

The HA-tagged protein binds to the HA-tag specific monoclonal antibody conjugated on an agarose gel. After washing away residual impurities, bound HA-tag proteins can be eluted off the affnity column by high concentration of the HA-tag peptide or by low pH buffer.

How big is an HA tag?

The hemagglutinin (HA) tag is a 9-amino acid long peptide corresponding to residues 98-106 of the human influenza HA molecule, an ~63kDa surface glycoprotein required for the infectivity of the human virus.

How big is a HA tag?

What is an anti HA antibody?

Anti-HA is produced in rabbit using a synthetic peptide corresponding to amino acid residues of the human Influenza hemagglutinin (HA), conjugated to KLH. The antibody is affinity-purified on the immobilized immunizing peptide. Anti-HA antibody is specific for N- or C-terminal HA-tagged fusion proteins.

How do you purify HA tag proteins?

How do you purify HA-tagged proteins? HA-tagged recombinant protein can be affinity purified directly from a cell culture lysate or supernatant. The HA-tagged protein binds to the HA-tag specific monoclonal antibody conjugated on an agarose gel.

What is the function of hemagglutinin?

The hemagglutinin(HA) of influenza virus is a major glycoprotein and plays a crucial role in the early stage of virus infection: HA is responsible for binding of the virus to cell surface receptors, and it mediates liberation of the viral genome into the cytoplasm through membrane fusion.