Evaluation of copper2+ affinities for the prion protein.

Abstract:

:The prion protein (PrP) is a cell-surface Cu2+ binding glycoprotein which can bind six copper ions. The role of Cu2+ in PrP function, misfolding, and prion disease has generated much interest; however, the field has been hampered by a lack of consensus with regard to the affinity of Cu2+ for PrPC. Here we build on our understanding of the appearance of visible CD spectra for full-length PrP and fragments to determine the affinity of Cu2+ for four different binding modes, with dissociation constants ranging between 13 and 66 nM at pH 7.4.

journal_name

Biochemistry

journal_title

Biochemistry

authors

Nadal RC,Davies P,Brown DR,Viles JH

doi

10.1021/bi9011397

subject

Has Abstract

pub_date

2009-09-29 00:00:00

pages

8929-31

issue

38

eissn

0006-2960

issn

1520-4995

journal_volume

48

pub_type

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