pFLAG-CTC Expression Vector

Bacterial vector for cytoplasmic expression of C-terminal FLAG fusion proteins

Pricing and availability is not currently available.


for molecular biology


buffered aqueous solution


FLAG® tagged

shipped in

dry ice

storage temp.


General description

The pFLAG-CTC Expression Vector is a 5.3 kb E. coli expression vector used for cytoplasmic expression of a properly inserted open reading frame as a C-terminal FLAG® fusion protein. The FLAG epitope is a small, hydrophilic 8 amino acid tag (DYKDDDDK) that provides for sensitive detection and high quality purification using ANTI-FLAG products.

C-terminal FLAG fusion proteins may be purified using Monoclonal ANTI-FLAG M2, Catalog Number F3165, and ANTI-FLAG M2 Affinity Gel, Catalog Number A2220.

The pFLAG-CTS-BAP Control Plasmid is a 6.7 kb vE. coli plasmid used for efficient and controlled periplasmic expression of C-terminal FLAG-BAP fusion protein.

Vector Maps and Sequences


  • pFLAG-CTC Expression Vector 10 μg (E5394) is supplied as 0.5 mg/ml in 10 mM Tris-HCl (pH 8.0) with 1 mM EDTA.
  • pFLAG-CTS-BAP Control Plasmid 1 μg (P7707) is supplied as 0.5 mg/ml in 10 mM Tris-HCl (pH 8.0) with 1 mM EDTA.


The promoter-regulatory region of the strong tac promoter (a hybrid of the trp and lac promoters from E.coli) drives transcription of ORF-FLAG fusion constructs. Control of transcription is regulated by the presence of the lacO sequences and inclusion of the lac repressor gene (lacI) on the plasmid.

Legal Information

FLAG is a registered trademark of Sigma-Aldrich Co. LLC
pFLAG-CTC is a trademark of Sigma-Aldrich Co. LLC
pFLAG-CTS is a trademark of Sigma-Aldrich Co. LLC


NONH for all modes of transport

Rachel L Olsen et al.
Veterinary microbiology, 164(1-2), 164-170 (2013-02-26)
The human pathogens enterohemorrhagic and enteropathogenic Escherichia coli (EHEC and EPEC), as well as the mouse pathogen Citrobacter rodentium encode type III secretion system (T3SS) effector proteins to promote their survival in the infected host. The mechanisms of action and...
Construction of expression vectors to produce affinity-tagged proteins in Pseudomonas.
Robin Couch et al.
BioTechniques, 32(6), 1230-1230 (2002-06-21)
Veronika Kucharova et al.
PloS one, 8(6), e66429-e66429 (2013-07-11)
mRNA stability is one among many parameters that can potentially affect the level of recombinant gene expression in bacteria. Blocking of the entire prokaryotic transcription machinery by addition of rifampicin is commonly used in protocols for analysis of mRNA stability....
Tsuyoshi Miki et al.
Journal of bacteriology, 191(22), 6843-6854 (2009-09-22)
The type III secretion system (T3SS) encoded by Salmonella pathogenicity island 2 (SPI-2) is involved in systemic infection and intracellular replication of Salmonella enterica serovar Typhimurium. In this study, we investigated the function of SsaE, a small cytoplasmic protein encoded...
Johanna M Schwingel et al.
Glycobiology, 18(6), 447-455 (2008-03-14)
Moraxella catarrhalis express three predominant forms of lipooligosaccharide (LOS) molecules on the bacterial surface. These major glycolipids contain specific carbohydrate epitopes that distinguish each glycoform into serotype A, B, or C LOS. All three serotypes, however, share a common glucose...
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