Abstract：
:Copper's essentiality and toxicity mean it requires a sophisticated regulation system for its acquisition, cellular distribution and excretion, which until now has remained elusive. Herein, we applied continuous wave (CW) and pulsed electron paramagnetic resonance (EPR) spectroscopy in solution to resolve the copper trafficking mechanism in humans, by considering the route travelled by Cu(I) from the metallochaperone Atox1 to the metal binding domains of ATP7B. Our study revealed that Cu(I) is most likely mediated by the binding of the Atox1 monomer to metal binding domain 1 (MBD1) and MBD4 of ATP7B in the final part of its extraction pathway, while the other MBDs mediate this interaction and participate in copper transfer between the various MBDs to the ATP7B membrane domain. This research also proposes that MBD1-3 and MBD4-6 act as two independent units.
journal_name
Int J Mol Scijournal_title
International journal of molecular sciencesauthors
Zaccak M,Qasem Z,Gevorkyan-Airapetov L,Ruthstein Sdoi
10.3390/ijms21155536subject
Has Abstractpub_date
2020-08-02 00:00:00issue
15issn
1422-0067pii
ijms21155536journal_volume
21pub_type
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