|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.
|Rat EIF5A ORF mammalian expression plasmid, C-GFPSpark tag||RG80501-ACG|
|Rat EIF5A ORF mammalian expression plasmid, C-OFPSpark / RFP tag||RG80501-ACR|
|Rat EIF5A ORF mammalian expression plasmid, N-GFPSpark tag||RG80501-ANG|
|Rat EIF5A ORF mammalian expression plasmid, N-OFPSpark / RFP tag||RG80501-ANR|
|Rat EIF5A ORF mammalian expression plasmid, C-Flag tag||RG80501-CF|
|Rat EIF5A ORF mammalian expression plasmid, C-His tag||RG80501-CH|
|Rat EIF5A ORF mammalian expression plasmid, C-Myc tag||RG80501-CM|
|Rat EIF5A ORF mammalian expression plasmid, C-HA tag||RG80501-CY|
|Rat EIF5A ORF mammalian expression plasmid, N-Flag tag||RG80501-NF|
|Rat EIF5A ORF mammalian expression plasmid, N-His tag||RG80501-NH|
|Rat EIF5A ORF mammalian expression plasmid, N-Myc tag||RG80501-NM|
|Rat EIF5A ORF mammalian expression plasmid, N-HA tag||RG80501-NY|
|Rat EIF5A Gene cDNA clone plasmid||RG80501-U|
|Rat EIF5A natural ORF mammalian expression plasmid||RG80501-UT|
|Learn more about expression Vectors|
EIF-5A, also known as EIF5, functions in start site selection as a GTPase accelerating protein (GAP) for the eukaryotic translation initiation factor (eIF) 2•GTP•tRNA ternary complex within the ribosome-bound pre-initiation complex. In protein synthesis initiation, eIF2 functions in its GTP-bound state to deliver initiator methionyl-tRNA to the small ribosomal subunit and is necessary for protein synthesis in all cells. EIF-5A stabilizes the binding of GDP to eIF2 and is therefore a bi-functional protein that acts as a GDP dissociation inhibitor (GDI). EIF-5A also interacts with eIF1 and eIF3 and binds the eIF2-GTP/Met-tRNA ternary complex along with the 40S ribosome subunit.