Cited by 11Neuroscience and Neuropharmacology ResearchReceptor Mechanisms and SignalingIon channel regulation and function

GABAB receptor subunit 1 binds to proteins affected in 22q11 deletion syndrome

Zunner, Dagmar, Deschermeier, Christina, Kornau, Hans-Christian·2010·Biochemical and Biophysical Research Communications

Abstract

GABA(B) receptors mediate slow inhibitory effects of the neurotransmitter gamma-aminobutyric acid (GABA) on synaptic transmission in the central nervous system. They function as heterodimeric G-protein-coupled receptors composed of the seven-transmembrane domain proteins GABA(B1) and GABA(B2), which are linked through a coiled-coil interaction. The ligand-binding subunit GABA(B1) is at first retained in the endoplasmic reticulum and is transported to the cell surface only upon assembly with GABA(B2). Here, we report that GABA(B1), via the coiled-coil domain, can also bind to soluble proteins of unknown function, that are affected in 22q11 deletion/DiGeorge syndrome and are therefore referred to as DiGeorge critical region 6 (DGCR6). In transfected neurons the GABA(B1)-DGCR6 association resulted in a redistribution of both proteins into intracellular clusters. Furthermore, the C-terminus of GABA(B2) interfered with the novel interaction, consistent with heterodimer formation overriding transient DGCR6-binding to GABA(B1). Thus, sequential coiled-coil interactions may direct GABA(B1) into functional receptors.

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Crossref · 10.1016/j.bbrc.2009.12.120

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  • DGCR6L has been shown to interact with the gamma-aminobutyric acid GABA-B1 receptor subunit and to be related to anxiety in children with chromosome 22q11.2 deletion syndrome as well as to schizophrenia.

    “the DiGeorge critical region 6 and its duplication (DGCR6L) have been shown to interact with the gamma-aminobutyric acid GABA-B1 receptor subunit (Zunner et al., 2010) and to be related to anxiety in children with chromosome 22q11.2 deletion syndrome (Das Chakraborty et al., 2012) as well as to schizophrenia (Liu et al., 2002).”

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Authors
Zunner, D., Deschermeier, C., & Kornau, H.-C.
Affiliations
Universität Hamburg (DE)
Corresponding author
Kornau, Hans-Christian
Venue
Biochemical and Biophysical Research Communications
Publisher
Elsevier BV
Published
2010-03
Volume
393
Issue
2
Pages
185-189
ISSN
0006-291X (ISSN-L)
OpenAlex
W1999664605
Cited by
11
References
31
Citations by year
2024: 2 · 2022: 1 · 2016: 1 · 2015: 1 · 2014: 1 · 2013: 1 · 2012: 3
FWCI
0.55
Type
journal article
Language
en
Open access
closed
Locations
  • Biochemical and Biophysical Research Communications (publishedVersion)
  • PubMed (publishedVersion)
Funders
Deutsche Forschungsgemeinschaft (SFB444)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Receptor Mechanisms and Signaling
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion channel regulation and function
Keywords
GABAB receptors, 22q11.2 deletion syndrome, coiled-coil domain, protein-protein interaction, receptor heterodimerization
MeSH terms
Amino Acid Sequence, Animals, DiGeorge Syndrome, Humans, Molecular Sequence Data, Neurons, Nuclear Proteins, Transfection, Extracellular Matrix Proteins, Protein Structure, Tertiary, Receptors, GABA-B, Two-Hybrid System Techniques, Mice

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