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pADL-pIII-1 Vector

For research use only. Not intended for any clinical use.
Cat.No.
VPT4030
Description
pADL-pIII-1 is a phagemid vector designed for phage display on the N-terminal side of the protein III of the filamentous bacteriophage M13 or equivalent. This vector contains a PelB leader sequence for expression in the periplasm, a double-SfiI cloning site to introduce scFvs or Fab fragments, a HIS tag for purification and an amber codon located before the full-length copy of the gene III sequence. On non-suppressive bacterial strains, free scFvs or Fab fragments are produced in the periplasm where they can be assayed for binding or purified for further testing. Expression of the fusion is under the tight control of a lac promoter. A strong transcriptional terminator upstream from the promoter efficiently represses undesirable expression and prevents promoter leakiness in absence of induction, thus limiting negative selection against clones bearing toxic products.
Promoter
LacZ
Resistance
Amp
Selection
Amp
Tag
His tag
Vector Length
4,978 bp
Vector Type
phagemid vector
Vector Map

Background

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Q & A

Customer Reviews

The pADL-pIII-1 vector is a specialized phagemid vector, designed specifically for phage display on the N-terminal side of Protein III in the filamentous bacteriophage M13 or related bacteriophages. The pADL-pIII-1 is equipped with a PelB leader sequence, expertly created to facilitate protein expression in the periplasmic region of bacteria. It also features a unique double-SfiI cloning site that serves as the introduction point for scFvs or Fab fragments. This peculiarity enables researchers to manipulate and study different genetic materials, leading to pivotal findings in the field. Additionally, the vector also features a HIS tag purposely integrated for purification purposes, and an amber codon that is strategically positioned before the full-length gene III sequence. The presence of the HIS tag simplifies the protein purification process and enables isolation of desired proteins, whereas the amber codon enhances translation accuracy. When grown on non-suppressive bacterial strains, the pADL-pIII-1 vector promotes free scFvs or Fab fragments production in the periplasmic space. These can then be tested for binding or even further purified for supplementary research, adding to the multi-faceted abilities of this vector.
The pADL-pIII-1 vector plays an essential role in the world of biotechnology. It is a phagemid vector explicitly designed for phage display. Phage display is a revolutionary technology utilised for investigations of protein–protein, protein-peptide, and protein-DNA interactions. The pADL-pIII-1 is a crucial tool in the study of protein interactions and drug design. It is typically used for the presentation of peptide or protein libraries on the surface of M13 phage particles. These are subsequently screened against target proteins to identify high-affinity ligands. Also, it fosters the simultaneous expression of the fusion protein both on the phage's outer surface and within the host. This dual expression aids in productive and economical extraction procedures for large-scale ventures. The efficacy of the high-throughput screening process is significantly enhanced as it facilitates easy identification and isolation of specific binding peptides or proteins. The pADL-pIII-1 vector allows identification, engineering, and optimization of drug candidates with higher accuracy, speed, and efficiency, thereby accelerating drug discovery. It aids in developing targeted therapeutics by identifying the binding interactions between the drug candidate and the target protein. Furthermore, in the field of immunology, this vector shows promising potential. It allows the design and optimization of vaccines by presenting antigens on the phage surface, which enhances the immune response. The pADL-pIII-1 also enables detecting and studying the interactions between antibodies and antigens. This can be considerably valuable in researching infectious diseases, auto-immune disorders, and cancer.
Customer Q&As
What are the advantages of M13 phage in phage display technology?

A: The multiple capsid proteins on the M13 phage allow for comprehensive display selection of a variety of peptides and proteins with unique characteristics. All five capsids were successfully used for exogenous domain display with unique vectors. pIII and pVIII are mostly preferred for M13 phage display.

What should I do if the amplified phage titer is low?

A: For efficient amplification of M13 phage, the culture should be fully aerated. We recommend performing amplification in 100 mL cultures in a 500 mL Erlenmeyer flask using a shaker set to 300 rpm. Amplification in smaller vessels will result in significantly lower yields of amplified phage.

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Customer Reviews
Important tool

The pADL-pIII-1 vector is an important tool for my antibody engineering and drug discovery research. Given that it allows surface display of peptides, it facilitates high-throughput screening of target molecules.

Germany

07/25/2022

Great!

While navigating the complexities of phage display, I have found the pADL-pIII-1 vector indispensable in successfully engineering phages to expose our protein of interest on their surface.

United Kingdom

03/05/2024

User-friendly

The architecture of the pADL-pIII-1 vector is top tier, presenting an array of user-friendly features that simplify the procedure of recombinant DNA technology.

Germany

01/03/2022

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