|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 SDPR ORF mammalian expression plasmid, C-GFPSpark tag||HG14090-ACG|
|Human SDPR ORF mammalian expression plasmid, C-OFPSpark / RFP tag||HG14090-ACR|
|Human SDPR ORF mammalian expression plasmid, N-GFPSpark tag||HG14090-ANG|
|Human SDPR ORF mammalian expression plasmid, N-OFPSpark / RFP tag||HG14090-ANR|
|Human SDPR ORF mammalian expression plasmid, C-Flag tag||HG14090-CF|
|Human SDPR ORF mammalian expression plasmid, C-His tag||HG14090-CH|
|Human SDPR ORF mammalian expression plasmid, C-Myc tag||HG14090-CM|
|Human SDPR ORF mammalian expression plasmid, C-HA tag||HG14090-CY|
|Human SDPR Gene cDNA clone plasmid||HG14090-G|
|Human SDPR ORF mammalian expression plasmid, N-Flag tag||HG14090-NF|
|Human SDPR ORF mammalian expression plasmid, N-His tag||HG14090-NH|
|Human SDPR ORF mammalian expression plasmid, N-Myc tag||HG14090-NM|
|Human SDPR ORF mammalian expression plasmid, N-HA tag||HG14090-NY|
|Human SDPR natural ORF mammalian expression plasmid||HG14090-UT|
|Learn more about expression Vectors|
Mouse Serum deprivation-response protein, also known as Phosphatidylserine-binding protein, Cavin-2 and SDPR, is a member of the PTRF / SDPR family. SDPR is highly expressed in heart and lung, and expressed at lower levels in brain, kidney, liver, pancreas, placenta, and skeletal muscle. SDPR is a new regulator of caveolae biogenesis. SDPR is up-regulated in asyncronously growing fibroblasts following serum deprivation but not following contact inhibition and Down-regulated during synchronous cell cycle re-entry. Caveolae are plasma membrane invaginations with a characteristic flask-shaped morphology. They function in diverse cellular processes, including endocytosis. Loss of SDPR causes loss of caveolae. SDPR binds directly to PTRF and recruits PTRF to caveolar membranes. Overexpression of SDPR, unlike PTRF, induces deformation of caveolae and extensive tubulation of the plasma membrane. SDPR overexpression results in increased caveolae size and leads to the formation of caveolae-derived tubules containing Shiga toxin. SDPR is a membrane curvature inducing component of caveolae, and that STB-induced membrane tubulation is facilitated by caveolae. Pleckstrin and SDPR are phosphorylated by protein kinase C (PKC), the interaction between pleckstrin and SDPR was shown to be independent of PKC inhibition or activation. SDPR may facilitate the translocation of nonphosphorylated pleckstrin to the plasma membrane in conjunction with phosphoinositides that bind to the C-terminal PH domain.