pSF-OXB20-KrYFP (OG607) Bacterial Constiutive YFP Expression Plasmid

Product Code: OG607R1
Product Code: OG607C1
Product Code: OG607G1

Product Description

This plasmid vector contains the OXB20 strong constitutive bacterial promoter driving expression of Kringle YFP (from DNA2.0)

Plasmid Information

Product Name: pSF-OXB20-KrYFP

Product Code: OG607

Size (bp): 4533 bp

Bacterial Antibiotic Selection: KanR

Origin and Compatibility: pUC high copy derived from pBR322

Bacterial Copy Number: 500-700 per cell

Promoter: OXB20 strong constitutive bacterial promoter

Plasmid Purpose:

This plasmid contains the Kringle YFP (Yellow Fluorescence Protein) under transcription control of the strong bacterial OXB20 promoter for high level expression in bacterial cells

Promoter Expression Level:

This plasmid contains a very strong constitutive E.coli promoter that was derived from the RecA promoter by removing the LexA repressor site. It is part of our constitutive bacterial promoter range. This promoter shows the highest level of expression in the promoter range with OXB1 showing the lowest level. They require no inducing agent for expression.

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Transcription Termination:

This plasmid contains three alternative transcription terminators for mammalian bacterial and bacteriophage (T7) expression. This means that only the promoter needs to be changed to alter the expression system you are using. We sell multiple promoters that can be used in each of these systems. The presence of each terminator does not reduce expression in the alternative systems.

Cloning in a gene:

This plasmid contains a gene within the main multiple cloning site (NotI-ClaI). Any plasmid that we sell where the gene is this configuration will be located in the exact same position in relation to the start and stop codon of the gene. The only exceptions to this rule are fusions proteins where the fusion gene may be positioned at the front or end of the MCS to allow gene fusion.

By positioning all of our genes in the same location it allows them to be transferred between plasmids using the same cloning method and restriction sites regardless of the plasmid being used from our product range. Inserting a new gene into this plasmid should be easily possible using a range of standard restriction enzyme sites that flank the gene currently in the vector.

Multiple cloning site notes:

In the multiple cloning site there are two important restriction sites called BsgI and BseRI sites. These sites both cut the DNA at the same position and cleave the stop codon of the gene in the multiple cloning site in this plasmid thereby producing a TA overhang. This overhang is compatible with any of our peptide or reporter fusion tag plasmids also cut with either of these enzymes. This allows seamless C-terminal fusions to be made with the gene in this multiple cloning site using a single cloning step from our C-terminal peptide and reporter tag product range. Normally the easiest method is to clone the C-terminal tag from our other plasmid products into this plasmid using BsgI or BseRI and the downstream ClaI restriction site.

BseRI and BsgI sites are non-palindromic and cleave a defined number of bases away from their binding sites. This allows them to cut the upstream stop codon in the gene in this plasmid regardless of the gene sequence.

Intellectual Property Status

This product is part of our SnapFastâ„¢ plasmid range, for more information on the intellectual property status of this plasmid please click here. For more information on the terms of our licences please click here.