期刊
JOURNAL OF PHYSIOLOGY-LONDON
卷 587, 期 10, 页码 2115-2125出版社
WILEY-BLACKWELL
DOI: 10.1113/jphysiol.2009.171603
关键词
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资金
- MRC
- BBSRC
- MRC PhD studentship
- MRC [G0601529] Funding Source: UKRI
- Medical Research Council [G0601529] Funding Source: researchfish
As a major inhibitory neurotransmitter, GABA plays a vital role in the brain by controlling the extent of neuronal excitation. This widespread role is reflected by the ubiquitous distribution of GABA(A) receptors throughout the central nervous system. To regulate the level of neuronal inhibition requires some endogenous control over the release of GABA and/or its postsynaptic response. In this context, Ca2+ ions are often used as primary or secondary messengers frequently resulting in the activation of protein kinases and phosphatases. One such kinase, Ca2+/calmodulin-dependent protein kinase II (CaMKII), can target the GABA(A) receptor to cause its phosphorylation. Evidence is now emerging, which is reviewed here, that GABA(A) receptors are indeed substrates for CaMKII and that this covalent modification alters the expression of cell surface receptors and their function. This type of regulation can also feature at inhibitory synapses leading to long-term inhibitory synaptic plasticity. Most recently, CaMKII has now been proposed to differentially phosphorylate particular isoforms of GABA(A) receptors in a synapse-specific context.
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