Transformation

Transformation
For bacteria and yeasts, transformation refers to the techniques of introducing plasmid or other vectors into a host cell.
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transformation
conversion of a normal cell into a cancerous cell; also refers to the uptake and incorporation of exogenous DNA by a cell
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...
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Transformation has two meanings in molecular biology:
Transformation is the genetic alteration of a cell resulting from the introduction, uptake and expression of foreign DNA.
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Transformation involves the uptake of "naked" DNA (DNA not incorporated into structures such as chromosomes) by competent bacterial cells (Fig. 1).
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transformation
conjugation
transduction
Transformation
Many bacteria can acquire new genes by taking up DNA molecules (e.g., a plasmid) from their surroundings. The ability to deliberately transform the bacterium E.
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Transformation
A process by which the genetic material carried by an individual cell is altered by incorporation of exogenous DNA into its genome. The phenomenon was first described by Griffith (1928) in Diplococcus pneumoniae.
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Transformation
Transfer of naked donor DNA into a cell.
Transformation frequency
The relative proportion of cells in a population that are transformed in a single experiment.
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transformation In Grif?th's experiments with strains of pneumonia bacterium, the process by which hereditary information passed from dead cells of one strain into cells of another strain, causing them to take on the characteristic virulence of the ?
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transformation
[L. trans, across + formare, to shape]
(1) The conversion of a normal animal cell to a cancerous cell. (2) A phenomenon in which external DNA is assimilated by a cell.
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Transformation-associated recombination in yeast can be used to generate large fragment (YAC) genome libraries
V. Larionov, N. Kouprina, J. Graves, and M.A. Resnick
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transformation. Condition in which DNA in the environment of bacteria somehow penetrates them and is incorporated into their genetic complement, so that their progeny inherit the genetic characters so acquired.
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transformation - morphological changes in a lymphocyte associated with the onset of division. Also used to denote the change to the autonomously dividing state of a cancer cell ...
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Transformation. In prokaryotes, the natural or induced uptake and expression of a foreign DNA sequence--typically a recombinant plasmid in experimental systems.
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TRANSFORMATION - Multiple meanings. With respect to cloning of DNA, refers to the transformation of bacteria (usually to specific antibiotic resistance) due to the uptake of foreign DNA.
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Transformation (with respect to cultured cells): A change in cell morphology and behavior which is generally related to carcinogenesis.
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Theology and transformation
In Eastern Christianity, there is more emphasis on prayer than on intellectual thought and study as a means to learn about God, and so as the proper form of "theology".
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Finally, plant transformation in arabidopsis is easy, using Agrobacterium tumefaciens to transfer DNA to the plant genome.
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History of arabidopsis as a model organism ...
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metaplasia - the transformation of one differentiated cell type into another.
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Plasmids can transfer genes between bacteria and are important tools of transformation for genetic engineers. (See Nicked circle, pAMP, Relaxed plasmid, Stringent plasmid, Supercoiled plasmid.) Pleiotrophy.
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Transformation Usually refers to passive uptake of DNA by cells, although in nature some bacterial species have a specific active uptake system.
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The Iro-C- cells in the notum, which did not express wg autonomously (Fig. 3I) (in accordance with their transformation toward hinge cells), caused their wild-type neighbors closest to the NP region also not to accumulate Wg protein (Fig. 3J).
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In recent years oxidative stress has been implicated in a wide variety of degenerative processes, diseases and syndromes, including the following: mutagenesis, cell transformation and cancer; atherosclerosis, arteriosclerosis, heart attacks, ...
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In bacteria, homologous recombination occurs during conjugative transfer of genes, during phage infection, and in transformation of bacteria by exogenous DNA. Recombination also contributes to repair of damage in DNA.
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Darwin did think that the transformation would be slow, but he did not think that it would be "even". Darwin did not think that the transformation would involve large numbers, and certainly not the entire parent population.
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They also discovered that protein-digesting enzymes (proteases) and RNA-digesting enzymes (RNAse) did not affect transformation, so the transforming substance was not a protein or RNA.
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A gene that is capable of causing the transformation of normal cells into cancer cells.
explained:
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: Heat shock response is ubiquitous and highly conserved defence mechanism for protection of cells from harmful conditions such as heat shock, UV irradiation, toxic chemicals, infection, transformation and appearance of mutant and
misfolded
proteins.
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Labs (CEPRAP): Electrophoresis, Restriction Enzymes, Bacterial Transformation
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Lineweaver-Burk equation An algebraic transformation of the Michaelis-Menten equation (plot of 1/V vs. 1/[S]), allowing determination of Vmax and Km by extrapolation of [S] to infinity.
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