|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 WFIKKN2 ORF mammalian expression plasmid, C-GFPSpark tag||HG11998-ACG|
|Human WFIKKN2 ORF mammalian expression plasmid, C-OFPSpark / RFP tag||HG11998-ACR|
|Human WFIKKN2 ORF mammalian expression plasmid, C-Flag tag||HG11998-CF|
|Human WFIKKN2 ORF mammalian expression plasmid, C-His tag||HG11998-CH|
|Human WFIKKN2 ORF mammalian expression plasmid, C-Myc tag||HG11998-CM|
|Human WFIKKN2 ORF mammalian expression plasmid, C-HA tag||HG11998-CY|
|Human WFIKKN2 Gene cDNA clone plasmid||HG11998-G|
|Human WFIKKN2 ORF mammalian expression plasmid, Flag tag||HG11998-G-F|
|Human WFIKKN2 ORF mammalian expression plasmid, N-Flag tag||HG11998-NF|
|Human WFIKKN2 ORF mammalian expression plasmid, N-His tag||HG11998-NH|
|Human WFIKKN2 ORF mammalian expression plasmid, N-Myc tag||HG11998-NM|
|Human WFIKKN2 ORF mammalian expression plasmid, N-HA tag||HG11998-NY|
|Human WFIKKN2 natural ORF mammalian expression plasmid||HG11998-UT|
|Learn more about expression Vectors|
WAP, kazal, immunoglobulin, kunitz and NTR domain-containing protein 2, also known as Growth and differentiation factor-associated serum protein 1, WAP, follistatin, immunoglobulin, kunitz and NTR domain-containing-related protein, WFIKKN-related protein, WFIKKN2 and GASP1, is a secreted protein which belongs to the WFIKKN family. WFIKKN2 contains two BPTI/Kunitz inhibitor domains, one Ig-like C2-type (immunoglobulin-like) domain, one Kazal-like domain, one NTR domain and one WAP domain. WFIKKN2 is primarily expressed in ovary, testis and brain, but not in liver. In fetal tissues, it is primarily expressed in brain, skeletal muscle, thymus and kidney. WFIKKN2 is protease-inhibitor that contains multiple distinct protease inhibitor domains. It probably has serine protease- and metalloprotease-inhibitor activity. It inhibits the biological activity of mature myostatin, but not activin. WFIKKN2 protein binds mature GDF8/myostatin and myostatin propeptide and inhibits the biological activity of myostatin.