When a plasmid containing both the GFP gene and AMP gene (pGLO) is transferred into an E. coli bacterium, the transformed cells can be grown in a culture dish that contains ampicillin. Only a small number of bacteria cells will be transformed and grow on the LB (lysogeny broth) and amp plates and glow.
What is transformation in pGLO?
With the pGLO transformation kit, students use a simple procedure to transform bacteria with a gene that codes for Green Fluorescent Protein (GFP). The real-life source of this gene is the bioluminescent jellyfish Aequorea victoria, and GFP causes the jellyfish to fluoresce and glow in the dark.
What are the 4 important regions on the pGLO plasmid?
The pGLO plasmid contains the following genes: GFP gene, the bla gene, the Ori (origin of replication), the araC gene, the pBAD promoter, and an area of multiple cloning sites Figure 2.
What is the purpose of inserting the pGLO plasmid into the E coli?
Bio-Rad Explorer pGLO Plasmid and GFP Kits use the pGLO plasmid, which contains the GFP gene, to enable hands-on learning about the central dogma, gene expression and regulation, bacterial transformation, protein separation, and the biomanufacturing process.
What is transformation in genes?
Genetic transformation involves the transfer and incorporation of foreign DNA into a host genome. In order for this transferred DNA to be transmitted to later generations, transformation of germline or other appropriate cells of the recipient species is essential.
What is the pGLO system?
The pGLO plasmid is an engineered plasmid used in biotechnology as a vector for creating genetically modified organisms. The plasmid contains several reporter genes, most notably the green fluorescent protein (GFP) and the ampicillin resistance gene.
Which of the traits that you originally observed for E coli did not seem to become altered?
The traits that I originally observed that didn’t seem to become altered were the color and shape of the bacteria. I arrived at the analysis for each trait by comparing the -pGLO plate with the remaining three plates. 2. Of the E.
What type of plate must pGLO be grown on?
Cells that have been transformed with PGLO DNA can grow on Petri plates that contain ampicillin. Transformed cells colonies will appear white when grown on plates not containing arabinose and will fluoresce green under UV light when grown on plates containing arabinose.
What are the three important genes located on the pGLO plasmid?
This plasmid has been engineered to contain three core genes: the bla gene which encodes the enzyme β-lactamase, responsible for resistance toward the antibiotic ampicillin (AmpR); the green fluorescent protein (GFP) gene, originally derived from jellyfish (Aequorea victoria), which encodes the GFP; and, the arabinose …
Which genes in the pGLO plasmid are expressed constitutively?
The pGLO plasmid contains a gene (bla or ampR) for a protein called β-lactamase, which hydrolyzes antibiotics that have a β-lactam ring and makes host cells resistant to compounds like ampicillin. Expression of the β-lactamase gene is constitutive (that is, transcription is always on) from its own promoter site.
What is the agent of transformation in bacteria?
Transformation is transfer of genetic material from one bacterial strain to other without establishing a physical contact. It is a method of sexual reproduction in bacteria wherein a piece of donor DNA, exogenote, is transferred to the recipient cell that finally become the stable part of recipient’s genome.
What is pGLO bacterial transformation?
With pGLO bacterial transformation, students learn about genetic engineering as they transform a non-virulent laboratory strain of Escherichia coli ( E. coli) with the pGLO plasmid. The procedure involves the CaCl 2 /heat shock method, which is a standard technique used in many research and biomanufacturing laboratories.
What carbohydrates can be added to LB media for PGLO transformation?
The standard protocol for pGLO transformation of E. coli strain HB101 calls for adding L-arabinose to LB medium at a concentration of 6 g L −1 along with ampicillin at a concentration of 100 mg L −1. To demonstrate the specificity of the interaction between sugars and the AraC protein, other carbohydrates can be added to the medium instead.
How can I make a culture with PGLO and no plasmid?
You’ll take a colony of bacteria, add some calcium chloride and pGLO plasmid, then heat shock the cells in an effort to make them take up the plasmid. This process is called transformation. Meanwhile, as a control, you’ll do the same thing with cells but no plasmid. Thus, you’ll have two cultures: + pGLO and -pGLO.
How do you genetically engineer ampicillin resistant E coli?
The objective of this experiment is to genetically engineer ampicillin resistant E. coli by transforming it with a plasmid containing an antibiotic resistance gene and a gene that codes for GFP and to calculate the transformation efficiency. This will alter the phenotype by inserting foreign DNA.
