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Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
Published on: December 16, 2013
Copper binding to the PrP isoforms: a putative marker of their conformation and function
Y Shaked1, H Rosenmann, N Hijazi
1Department of Neurology, The Agnes Ginges Center for Human Neurogenetics, Hadassah University Hospital, Jerusalem, Israel.
Journal of Virology
|August 3, 2001
Summary
Normal prion protein (PrP(C)) binds to a copper resin, unlike the disease-associated prion protein (PrP(Sc)). This difference in binding is a new prion-specific property, potentially linked to PrP(Sc) misfolding.
Area of Science:
- Biochemistry
- Neuroscience
- Protein Chemistry
Background:
- Prion diseases are linked to the misfolding of the prion protein (PrP).
- The normal cellular isoform is PrP(C), while the disease-associated, misfolded isoform is PrP(Sc).
- Distinguishing between PrP(C) and PrP(Sc) is crucial for understanding prion pathogenesis.
Purpose of the Study:
- To investigate differential binding properties of PrP(C) and PrP(Sc) to a copper-loaded resin.
- To identify new prion-specific properties that differentiate PrP(Sc) from PrP(C).
Main Methods:
- Utilizing a copper(2+)-loaded resin for protein binding assays.
- Comparing the retention of purified PrP(C) and PrP(Sc) on the resin.
Main Results:
- PrP(C) was retained by the copper resin via two distinct binding sites.
- PrP(Sc) showed no retention on the copper resin.
- This differential binding represents a novel property distinguishing PrP(Sc).
Conclusions:
- The inability of PrP(Sc) to bind the copper resin is a new prion-specific characteristic.
- This binding difference may arise from the aberrant conformation of PrP(Sc).
- This finding could aid in the diagnosis or characterization of prion diseases.
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