|Vector Type||Mammalian Expression Vector|
|Expression Method||Constiutive, Stable / Transient|
|Selection In Mammalian Cells||Hygromycin|
FLAG-tag, or FLAG octapeptide, is a polypeptide protein tag that can be added to a protein using recombinant DNA technology. It can be used for affinity chromatography, then used to separate recombinant, overexpressed protein from wild-type protein expressed by the host organism. It can also be used in the isolation of protein complexes with multiple subunits.
A FLAG-tag can be used in many different assays that require recognition by an antibody. If there is no antibody against the studied protein, adding a FLAG-tag to this protein allows one to follow the protein with an antibody against the FLAG sequence. Examples are cellular localization studies by immunofluorescence or detection by SDS PAGE protein electrophoresis.
The peptide sequence of the FLAG-tag from the N-terminus to the C-terminus is: DYKDDDDK (1012 Da). It can be used in conjunction with other affinity tags, for example a polyhistidine tag (His-tag), HA-tag or Myc-tag. It can be fused to the C-terminus or the N-terminus of a protein. Some commercially available antibodies (e.g., M1/4E11) recognize the epitope only when it is present at the N-terminus. However, other available antibodies (e.g., M2) are position-insensitive.
|Human IFNA8 ORF mammalian expression plasmid, C-GFPSpark tag||HG10347-ACG|
|Human IFNA8 ORF mammalian expression plasmid, C-OFPSpark / RFP tag||HG10347-ACR|
|Human IFNA8 ORF mammalian expression plasmid, C-Flag tag||HG10347-CF|
|Human IFNA8 ORF mammalian expression plasmid, C-His tag||HG10347-CH|
|Human IFNA8 ORF mammalian expression plasmid, C-Myc tag||HG10347-CM|
|Human IFNA8 ORF mammalian expression plasmid, C-HA tag||HG10347-CY|
|Human IFNA8 Gene cDNA clone plasmid||HG10347-M|
|Human IFNA8 ORF mammalian expression plasmid, Flag tag||HG10347-M-F|
|Human IFNA8 ORF mammalian expression plasmid, N-Flag tag||HG10347-NF|
|Human IFNA8 ORF mammalian expression plasmid, N-His tag||HG10347-NH|
|Human IFNA8 ORF mammalian expression plasmid, N-Myc tag||HG10347-NM|
|Human IFNA8 ORF mammalian expression plasmid, N-HA tag||HG10347-NY|
|Human IFNA8 natural ORF mammalian expression plasmid||HG10347-UT|
|Learn more about expression Vectors|
Interferon alpha-B, also known as IFNA8, belongs to the alpha/beta interferon family. Interferons are proteins made and released by host cells in response to the presence of pathogens such as viruses, bacteria, parasites or tumorcells. Interferon stimulates the production of two enzymes: a protein kinase and an oligoadenylate synthetase. They also allow for communication between cells to trigger the protective defenses of the immune system that eradicate pathogens or tumors. Interferons also activate immune cells, such as natural killer cells and macrophages. They increase recognition of infection or tumor cells by up-regulating antigen presentation to T lymphocytes. They also increase the ability of uninfected host cells to resist new infection by virus. Certain symptoms, such as aching muscles and fever, are related to the production of IFNs during infection. Produced by macrophages, IFN-alpha have antiviral activities.