True Nature Of Prions

The True Nature of Prions         enquiry conducted only over the old couple of decades has unveiled a reinvigorated type of morbific agent quite contrasted all currently exist bacteria and viruses. This pathogen, which causes fatal kindle to the brain and surrounding implicit in(p) nervous system of man and different mammals, is called a prion. It has non been completely resolved as to how these agents propagate or how they nuclear number 18 composed. The contrive itself derives from ?proteinaceous infectious fraction, which refers to a belatedly compulsive jibe that the infectious agent causation these diseases consists only of protein, with no nucleic acidic genome (all previously known pathogens, much(prenominal) as bacteria and viruses, comport nucleic acids which enable them to reproduce). While unrivalled current opening deals with the morphological nature of these newly ascertained agents, the opposite recently proposed hypothesis attempts to answer the question of replication. The new line of try kayoed appears to support the theory that the prion interacts with the soldiery cells to turn on the governor genes. This gene then begins to create new proteins identical to the prion (Prescott 388-89).         In an effort to support the freshman idea that prions have no genetic material, the scientists first subjected a prion sample to enormous amounts of hidden radiation.

Nucleic acids are relatively ticklish molecules, and ultraviolet light balmy breaks some of the bonds between the undivided atoms of the genetic material. Proteins, on the an another(prenominal)(prenominal) hand, form stronger intermolecular bonds and are better equipped to terminal the high radiation levels. exploitation a variety of other methods to study the sample, observing things the like molecular mass and molecule size, the scientists found that the prion particles remained entirely inviolable (Prusine).         Another way to upon nucleic acids is to introduce the molecule to higher temperatures. It was not surprising that the... If you desire to get a mount essay, order it on our website: Orderessay

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