OGS501

PSF-TAC - PTAC INDUCIBLE BACTERIAL PLASMID

plasmid vector for molecular cloning

• Sinónimos: cloning vector, expression vector, molecular cloning vector, plasmid, plasmid vector, snapfast vector, vector
• UNSPSC Code: 12352200
• NACRES: NA.85

Propiedades

• form: buffered aqueous solution
• mol wt: size 3864 bp
• bacteria selection: kanamycin
• origin of replication: pUC (500 copies)
• peptide cleavage: no cleavage
• promoter: Promoter name: Tac; Promoter activity: inducible; Promoter type: bacterial
• reporter gene: none
• shipped in: ambient
• storage temp.: −20°C

Descripción

General description

This is a bacterial expression plasmid containing pTAC promoter that can be regulated using the Lac repressor. The pTac promoter was created by fusing the promoter for the Lac operon with the promoter for the Tryptophan operon. This provides greater control and expression in comparison to standard Lac promoter plasmids. In order to use this plasmid you will need an E. coli cell line that expresses the LacI repressor this is a common feature of most cloning and protein expression E. coli strains.

Promoter Expression Level: This plasmid contains the IPTG inducible promoter that was created by the fusion of the Lac promoter and the Tryptophan operon promoter. It allows inducible expression in E. coli using IPTG as the inducing agent.

Application

Cloning in a gene: This plasmid has been designed to be compatible with a range of cloning techniques. The multiple cloning site contains a range of standard commonly used restriction sites for cloning. Using these sites genes can be inserted using standard cloning methods with DNA ligase. Other methods such as ligase independent cloning (LIC) Gibson Assembly InFusionHD or Seamless GeneArt can also be used and because all of our plasmids are based on the same backbone the same method can be used for cloning into all of our catalogue vectors.

Multiple cloning site notes: There are a few important sites within the MCS. These include the NcoI site the XbaI site and the BsgI and BseRI sites. The NcoI site contains a start codon that is immediately downstream of both a Kozak and Shine-Dalgarno ribosomal binding site. These allow for optimal positioning of genes when the start codon is placed in this location. If this is not required and you wish to use a downstream site for gene cloning you can remove the NcoI site by cleaving the plasmid with KpnI.

The XbaI site contains a stop codon. This stop codon is positioned in a specific position in relation to the BsgI and BseRI sites that are immediately downstream. When either BseRI or BsgI cleave the plasmid they produce a TA overhang from the stop codon in the XbaI site that is compatible with all of our peptide tag plasmids cut with the same sites. BseRI and BsgI sites are non-palindromic and cleave a defined number of bases away from their binding site.

Whenever we clone a gene into our multiple cloning site we always position the start and stop codon in the same positions in the MCS. If the start and ends of the genes are not compatible with NcoI and XbaI we extend the sequence to the nearest external sites but keep the start and stop codons locations consistent.

Sequence

To view sequence information for this product, please visit the product page

Analysis Note

To view the Certificate of Analysis for this product, please visit www.oxgene.com

Información de seguridad

• Storage Class: 12 - Non Combustible Liquids
• flash_point_f: Not applicable
• flash_point_c: Not applicable