Bross / Gregersen Protein Misfolding and Disease

Erscheinungsjahr 2008
ISBN: 978-1-59259-394-1
Verlag: Humana Press
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, Band 232, 318 Seiten, eBook

Reihe: Methods in Molecular Biology

For decades it has been known that structured conformations are important for the proper functioning of most cellular proteins. However, appreciation that protein folding to the functional conformations as well as the structural maintenance of protein molecules are very complex processes has only emerged during the last ten years. The intimate interplay uncovered by this scientific development led us to realize that perturbations of the protein folding process and disturbances of conformational maintenance are major disease mechanisms. This development has given rise to the concept of conformational diseases and the broader signature of protein folding diseases, comprising diseases in which mutations or environmental stresses may result in a partial misfolding that leads then to alternative conformations capable of disturbing cellular processes. This may happen by self-association (aggregation), as in prion and Alzheimer’s diseases, or by incorporation of alternatively folded subunits into structural entities, as in collagen diseases. Another possibility is that folding to the native structure is impaired or abolished, resulting in decreased stea- state levels of the correctly folded protein, as is observed in cystic fibrosis and 1-antitrypsin deficiency, as well as in many enzyme deficiencies. In addition, deficiencies of proteins that are engaged in assisting and supervising protein folding (protein quality control) may impair the folding of many other proteins, resulting in pathological phenotypes. Examples of this are the spastic paraplegia attributable to mutations in mitochondrial protease/chaperone complexes.

Zielgruppe

Professional/practitioner

Autoren/Hrsg.

Bross, Peter

Gregersen, Niels

Inhaltsverzeichnis

General Concepts and Models.- Protein Misfolding, Aggregation, and Degradation in Disease.- Basic Introduction to In Vivo Protein Folding and Its Defects.- Cystic Fibrosis.- ?1-Antitrypsin Deficiency.- Parkinson’s Disease.- Aberrant Protein Folding as the Molecular Basis of Cancer.- Yeast as a Model System to Investigate Protein Conformational Diseases.- General Methods.- Expression of Recombinant Proteins.- Expression in E. coli Systems.- Protein Expression in Yeasts.- Site-Directed Mutagenesis.- Pulse-Chase Labeling Techniques for the Analysis of Protein Maturation and Degradation.- Techniques in Conformational Disease Research.- Detection of Aggregates and Protein Inclusions by Staining of Tissues.- Study of Mutant Proteins With Folding Defects in Cultured Patient Cells.- E. coli Expression System for Identifying Folding Mutations of Human Adenosine Deaminase.- Characterization of Overexpressed Mutant Proteins in Mammalian Cells.- Investigation of Unfolded-Protein Response in Cells Expressing Familial Alzheimer's Disease-Linked Presenilin Variants.- Huntingtin Fragments Form Aggresome-Like Inclusion Bodies in Mammalian Cells.- Application of Chemical Chaperones to the Rescue of Folding Defects.- Analysis of Defective Subunit Interactions Using the Two-Hybrid System.- Investigation of Folding and Degradation of In Vitro Synthesized Mutant Proteins in the Cytosol.- Investigation of Folding and Degradation of In Vitro Synthesized Mutant Proteins in Microsomes.- Investigation of Folding and Degradation of In Vitro Synthesized Mutant Proteins in Mitochondria.- Investigation of Folding and Degradation of Mutant Proteins Synthesized in Semipermeabilized Cells.