pFLAG-CTS Expression Vector

Bacterial vector for periplasmic 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-CTS 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 E. coli plasmid used for efficient and controlled periplasmic expression of C-terminal FLAG-BAP fusion protein.

Vector Maps and Sequences


The pFLAG-CTS Expression Vector is suitable for cloning and expression of C-terminal FLAG® fusion proteins in E. coli.


  • pFLAG-CTS Expression Vector 10 μg (E5269) 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

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


G A Smith et al.
Molecular microbiology, 17(5), 945-951 (1995-09-01)
Listeria monocytogenes is a Gram-positive facultative intracytoplasmic bacterial pathogen that exhibits rapid actin-based motility in eukaryotic cells and in cell-free cytoplasmic extracts. The protein product of the actA gene is required for bacterial movement and is normally expressed in a...
H A de Boer et al.
Proceedings of the National Academy of Sciences of the United States of America, 80(1), 21-25 (1983-01-01)
Two hybrid promoters that are functional in Escherichia coli have been constructed. These hybrid promoters, tacI and tacII, were derived from sequences of the trp and the lac UV5 promoters. In the first hybrid promoter (tacI), the DNA upstream of...
Saadet Albayrak Guralp et al.
PloS one, 8(3), e59305-e59305 (2013-03-26)
Antimicrobial peptides (AMPs) belong to a class of natural microbicidal molecules that have been receiving great attention for their lower propensity for inducing drug resistance, hence, their potential as alternative drugs to conventional antibiotics. By generating AMP libraries, one can...
Montarop Yamabhai et al.
Journal of biotechnology, 133(1), 50-57 (2007-10-24)
Bacillus spp. are Gram-positive bacteria that secrete a large number of extracellular proteins of industrial relevance. In this report, three Bacillus extracellular hydrolytic enzymes, i.e., alpha-amylase, mannanase and chitinase, were cloned and over-expressed in Gram-negative Escherichia coli. We found that...
Parisa Asvadi et al.
Journal of molecular recognition : JMR, 15(5), 321-330 (2002-11-26)
In an attempt to generate recombinant anti-D reagents for possible diagnostic and therapeutic use we cloned the genes encoding the variable (V) domains of a human anti-D antibody secreted by the lymphoblastoid cell line BTSN4. A single-chain Fv (scFv) fragment...
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