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Human STX3 Gene cDNA Clone (full-length ORF Clone), expression ready, C-FLAG-tagged

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STX3cDNA Clone Product Information
Gene_bank_ref_id:BC007405
cDNA Size:909
cDNA Description:ORF Clone of Homo sapiens syntaxin 3 DNA.
Gene Synonym:STX3A
Species:Human
Vector:pCMV3-C-FLAG
Restriction Site:KpnI + XbaI
Tag Sequence:FLAG Tag Sequence: GATTACAAGGATGACGACGATAAG
Sequence Description:Identical with the Gene Bank Ref. ID sequence.
Shipping_carrier:Each tube contains approximately 10 μg of lyophilized plasmid.
Storage:The lyophilized plasmid can be stored at ambient temperature for three months.
pCMV3-C-FLAG Vector Information
 
Vector Name pCMV3-C-FLAG
Vector Size 6158bp
Vector Type Mammalian Expression Vector
Expression Method Constiutive, Stable / Transient
Promoter CMV
Antibiotic Resistance Kanamycin
Selection In Mammalian Cells Hygromycin
Protein Tag FLAG
Sequencing Primer Forward:T7(TAATACGACTCACTATAGGG)
Reverse:BGH(TAGAAGGCACAGTCGAGG)

pCMV3-C-FLAG Physical Map
Schematic of pCMV3-C-FLAG Multiple Cloning Sites

FLAG Tag Info

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.

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Background

STX3, also known as syntaxin 3, belongs to the syntaxin family. STX3 is a target membrane protein (t-SNARE) which is needed for membrane fusion. Membrane fusion requires the formation of a complex between a vesicle protein (v-SNARE) and t-SNAREs. STX3, together with syntaxin 2, are predominantly localized at the plasma membrane. Syntaxin 2 cycles between the plasma membrane and the perinuclear compartment whereas syntaxin 3 cycles between the plasma membrane and the trans-Golgi network. It is possible that this cycling has an important role in the regulation of t-SNARE function.

References
  • Ibaraki K. et al., 1995, Biochem Biophys Res Commun. 211 (3): 997-1005
  • Martín-Martín B. et al., 1999, J Leukoc Biol. 65 (3): 397-406.
  • Darios F. et al., 2006, Nature. 440 (7085): 813-7.
  • Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"