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OGS502

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PSF-LACI - LACI PROMOTER BACTERIAL VECTOR

plasmid vector for molecular cloning

Synonym(s):

cloning vector, expression vector, molecular cloning vector, plasmid, plasmid vector, snapfast vector, vector

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About This Item

UNSPSC Code:
12352200
NACRES:
NA.85

recombinant

expressed in E. coli

form

buffered aqueous solution

mol wt

size 3897 bp

bacteria selection

kanamycin

Origin of replication

pUC (500 copies)

Peptide cleavage

no cleavage

Promoter

Promoter name: Lac
Promoter activity: inducible
Promoter type: bacterial

reporter gene

none

shipped in

ambient

storage temp.

−20°C

General description

This vector is designed for the expression of proteins in E. coli. It contains the promoter from the Lac operon to control the expression of transgenes. 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 Lac operon promoter which is inducible using IPTG to regulate transgene expression.

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

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Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Articles

SnapFast™ Restriction Site Functions

Learn more about relevant restriction site functions in the SnapFast™ plasmid system. All DNA sections are pre-screened, and where possible modified, to remove any of the restriction sites found within the core SnapFast plasmids to maintain their flexibility.

Sequencing Primers

A range of forward and reverse sequencing primers that allow you to sequence any insert that you make into a particular position within any plasmid. Where possible, the binding sites for each of these primers is conserved.

What is a DNA Component?

Our plasmids are composed of both a core vector backbone and a series of DNA components. Our plasmid platform is all built around the same core backbone, which means that the DNA components within each plasmids can be interchanged into each other.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

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