|Datasheet||Specific References||Reviews||Related Products||Protocols|
|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 EFNA4 ORF mammalian expression plasmid, C-GFPSpark tag||HG12087-ACG|
|Human EFNA4 ORF mammalian expression plasmid, C-OFPSpark / RFP tag||HG12087-ACR|
|Human EFNA4 ORF mammalian expression plasmid, C-Flag tag||HG12087-CF|
|Human EFNA4 ORF mammalian expression plasmid, C-His tag||HG12087-CH|
|Human EFNA4 ORF mammalian expression plasmid, C-Myc tag||HG12087-CM|
|Human EFNA4 ORF mammalian expression plasmid, C-HA tag||HG12087-CY|
|Human EFNA4 Gene cDNA clone plasmid||HG12087-G|
|Human EFNA4 ORF mammalian expression plasmid, N-Flag tag||HG12087-NF|
|Human EFNA4 ORF mammalian expression plasmid, N-His tag||HG12087-NH|
|Human EFNA4 ORF mammalian expression plasmid, N-Myc tag||HG12087-NM|
|Human EFNA4 ORF mammalian expression plasmid, N-HA tag||HG12087-NY|
|Human EFNA4 natural ORF mammalian expression plasmid||HG12087-UT|
|Learn more about expression Vectors|
EPH-related receptor tyrosine kinase ligand 4 (Ephrin-A4) also known as EFNA4, is a member of the Ephrin family. The Eph family receptor interacting proteins (ephrins) are a family of proteins that serve as the ligands of the Eph receptor, which compose the largest known subfamily of receptor protein-tyrosine kinases (RTKs). Eph/ephrin interactions are implicated in axon guidance, neural crest cell migration, establishment of segmental boundaries, and formation of angiogenic capillary plexi. Ephrin subclasses are further distinguished by their mode of attachment to the plasma membrane: ephrin-A ligands bind EphA receptors and are anchored to the plasma membrane via a glycosylphosphatidylinositol (GPI) linkage, whereas ephrin-B ligands bind EphB receptors and are anchored via a transmembrane domain. An exception is the EphA4 receptor, which binds both subclasses of ephrins. Ephrin-A4/EFNA4 functions as a cell surface GPI-bound ligand for Eph receptor, a family of receptor tyrosine kinases which are crucial for migration, repulsion and adhesion during neuronal, vascular and epithelial development.