skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: ATP7A and ATP7B copper transporters have distinct functions in the regulation of neuronal dopamine-β-hydroxylase

Journal Article · · Journal of Biological Chemistry

The copper (Cu) transporters ATPase copper-transporting alpha (ATP7A) and ATPase copper-transporting beta (ATP7B) are essential for the normal function of the mammalian central nervous system. Inactivation of ATP7A or ATP7B causes the severe neurological disorders, Menkes disease and Wilson disease, respectively. In both diseases, Cu imbalance is associated with abnormal levels of the catecholamine-type neurotransmitters dopamine and norepinephrine. Dopamine is converted to norepinephrine by dopamine-β-hydroxylase (DBH), which acquires its essential Cu cofactor from ATP7A. However, the role of ATP7B in catecholamine homeostasis is unclear. In this work, using immunostaining of mouse brain sections and cultured cells, we show that DBH-containing neurons express both ATP7A and ATP7B. The two transporters are located in distinct cellular compartments and oppositely regulate the export of soluble DBH from cultured neuronal cells under resting conditions. Down-regulation of ATP7A, overexpression of ATP7B, and pharmacological Cu depletion increased DBH retention in cells. In contrast, ATP7B inactivation elevated extracellular DBH. Proteolytic processing and the specific activity of exported DBH were not affected by changes in ATP7B levels. These results establish distinct regulatory roles for ATP7A and ATP7B in neuronal cells and explain, in part, the lack of functional compensation between these two transporters in human disorders of Cu imbalance.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
National Institutes of Health (NIH); USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
2R01GM101502; AC02-06CH11357
OSTI ID:
1600788
Journal Information:
Journal of Biological Chemistry, Vol. 293, Issue 52; ISSN 0021-9258
Publisher:
American Society for Biochemistry and Molecular BiologyCopyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 37 works
Citation information provided by
Web of Science

References (50)

Cellular copper levels determine the phenotype of the Arg875 variant of ATP7B/Wilson disease protein journal March 2011
Dopamine β-Hydroxylase Immunoreactivity in Human Cerebrospinal Fluid: Properties, Relationship to Central Noradrenergic Neuronal Activity and Variation in Parkinson's Disease and Congenital Dopamine β-Hydroxylase Deficiency journal February 1994
Altered ATP7A expression and other compensatory responses in a murine model of Menkes disease journal September 2007
Neurochemical and histochemical evidence for an abnormal catecholamine metabolism in the cerebral cortex of the Long–Evans Cinnamon rat before excessive copper accumulation in the brain journal October 1996
Complex psychiatric presentation in adolescent onset Wilson's disease journal January 2011
Expression of copper trafficking genes in the mouse brain journal January 1998
Effective Plasmid DNA and Small Interfering RNA Delivery to Diseased Human Brain Microvascular Endothelial Cells journal January 2012
The role of iron and copper molecules in the neuronal vulnerability of locus coeruleus and substantia nigra during aging journal June 2004
A NMR Study of the Interaction of a Three-domain Construct of ATP7A with Copper(I) and Copper(I)-HAH1: THE INTERPLAY OF DOMAINS journal September 2005
Plasma and cerebrospinal fluid neurochemical pattern in Menkes disease journal February 1993
Human copper transporter ATP7B (Wilson disease protein) forms stable dimers in vitro and in cells journal August 2017
The Loop Connecting Metal-Binding Domains 3 and 4 of ATP7B Is a Target of a Kinase-Mediated Phosphorylation journal June 2009
Energetic and nutritional constraints on infant brain development: Implications for brain expansion during human evolution journal December 2014
Critical roles for the COOH terminus of the Cu-ATPase ATP7B in protein stability, trans-Golgi network retention, copper sensing, and retrograde trafficking journal July 2011
NMDA Receptor Activation Mediates Copper Homeostasis in Hippocampal Neurons journal January 2005
Expression profile of the copper homeostasis gene, rAtox1, in the rat brain journal August 1999
In vivo and in vitro analyses of amygdalar function reveal a role for copper journal May 2014
MAPS : A set of software tools for analysis and visualization of 3D X-ray fluorescence data sets journal March 2003
Cognitive profile and structural findings in Wilson′s disease: A neuropsychological and MRI-based study journal January 2010
Effects of different sources of copper on Ctr1, ATP7A, ATP7B, MT and DMT1 protein and gene expression in Caco-2 cells journal July 2014
Metabolism and functions of copper in brain journal May 2014
Copper signaling in the mammalian nervous system: Synaptic effects journal January 2012
Neuronal differentiation is associated with a redox-regulated increase of copper flow to the secretory pathway journal February 2016
Suppression of long-term potentiation in hippocampal slices by copper journal January 1997
A Menkes P-type ATPase involved in copper homeostasis in the central nervous system of the rat journal August 1997
Mode d’entrée psychiatrique dans la maladie de Wilson : à propos d’un cas à début tardif journal December 2007
Age-dependent increase of brain copper levels and expressions of copper regulatory proteins in the subventricular zone and choroid plexus journal June 2015
Targeted Ablation of the Chromogranin A ( Chga ) Gene: Normal Neuroendocrine Dense-Core Secretory Granules and Increased Expression of Other Granins journal August 2006
Phosphorylation regulates copper-responsive trafficking of the Menkes copper transporting P-type ATPase journal December 2009
Molecular Events Initiating Exit of a Copper-transporting ATPase ATP7B from the Trans -Golgi Network journal August 2012
Copper pathology in vulnerable brain regions in Parkinson's disease journal April 2014
Multiple forms of human dopamine β-hydroxylase in SH-SY5Y neuroblastoma cells journal November 1991
Differential alteration of the nigrostriatal dopaminergic system in Wilson's disease investigated with [123I]ß-CIT and high-resolution SPET journal October 2001
Predictive value of plasma catecholamine levels in neonatal detection of Menkes disease journal January 1993
Copper regulates rest-activity cycles through the locus coeruleus-norepinephrine system journal June 2018
Photometric Assay of Dopamine-β-Hydroxylase Activity in Human Blood journal September 1972
Peptidylglycine α-amidating monooxygenase heterozygosity alters brain copper handling with region specificity journal October 2013
Relative Efficiencies of Plasma Catechol Levels and Ratios for Neonatal Diagnosis of Menkes Disease journal February 2009
An NMR Study of the Interaction of the N-terminal Cytoplasmic Tail of the Wilson Disease Protein with Copper(I)-HAH1 journal January 2009
Mapping Brain Metals to Evaluate Therapies for Neurodegenerative Disease: Mapping Brain Metals to Evaluate Therapies for Neurodegenerative Disease journal June 2010
Involvement of Protein Kinase D in Expression and Trafficking of ATP7B (Copper ATPase) journal December 2010
The Rac1-GEF Tiam1 Couples the NMDA Receptor to the Activity-Dependent Development of Dendritic Arbors and Spines journal February 2005
Characterization and Identification of Hepatic mRNA Related to Copper Metabolism and Homeostasis in Cattle journal December 2008
Effects of tetrathiomolybdate and penicillamine on brain hydroxyl radical and free copper levels: A microdialysis study in vivo journal February 2015
Copper is an endogenous modulator of neural circuit spontaneous activity journal November 2014
Mechanism-based inactivation of dopamine beta-monooxygenase by beta-chlorophenethylamine. journal June 1984
Kinetic and spectroscopic studies of the interaction of copper with dopamine beta-hydroxylase. journal March 1984
Mechanism of biosynthesis of soluble and membrane-bound forms of dopamine beta-hydroxylase in PC12 pheochromocytoma cells. journal June 1983
Isolation and reconstitution of the membrane-bound form of dopamine beta-hydroxylase. journal April 1983
The Rac1-GEF Tiam1 Couples the NMDA Receptor to the Activity-Dependent Development of Dendritic Arbors and Spines text January 2005

Cited By (5)

Dopamine β hydroxylase ( DBH ) polymorphisms do not contribute towards the clinical course of Wilson's disease in Indian patients journal July 2019
Silver Ions as a Tool for Understanding Different Aspects of Copper Metabolism journal June 2019
Dopamine beta‐hydroxylase and its genetic variants in human health and disease journal October 2019
From and to the Golgi – defining the Wilson disease protein road map journal August 2019
Manganese influx and expression of ZIP8 is essential in primary myoblasts and contributes to activation of SOD2 journal January 2019