Homer/Vesl proteins and their roles in CNS neurons.
Since their initial discovery in 1997, Homer/Vesl proteins have become increasingly investigated as putative regulators of receptor and ion-channel function in the central nervous system. Within a relatively brief period, numerous research reports have described manifold effects of Homer proteins, including the modulation of the trafficking of type I metabotropic glutamate receptors (mGluRs), axonal pathfinding, mGluR coupling to calcium and potassium channels, agonist-independent mGluR activity, ryanodine receptor regulation, locomotor activity, and behavioral plasticity. This review summarizes our current knowledge on the induction, expression, and structure of the various forms of Homer proteins, as well as their roles in neuronal function. In addition, we provide an outlook on novel developments with regard to the involvement of Homer-1a in hippocampal synaptic function.
Ehrengruber
Markus U
MU
Kantonsschule Hohe Promenade, Promenadengasse 11, University of Zurich, Zurich, Switzerland. markus.ehrengruber@hopro.ch
Kato
Akihiko
A
Inokuchi
Kaoru
K
Hennou
Sonia
S
D000818:Animals; D015220:Calcium Channels / Q000378:metabolism; D002352:Carrier Proteins / Q000378:metabolism*; D000072233:Homer Scaffolding Proteins; D006801:Humans; D053496:Inositol 1,4,5-Trisphosphate Receptors; D009473:Neuronal Plasticity / Q000502:physiology; D009474:Neurons / Q000166:cytology / Q000378:metabolism*; D009479:Neuropeptides / Q000378:metabolism*; D017434:Protein Structure, Tertiary / Q000502:physiology; D018160:Receptors, Cytoplasmic and Nuclear / Q000378:metabolism; D018094:Receptors, Metabotropic Glutamate / Q000378:metabolism*; D019837:Ryanodine Receptor Calcium Release Channel / Q000378:metabolism; D013570:Synaptic Membranes / Q000502:physiology
D015220:Calcium Channels; D002352:Carrier Proteins; D000072233:Homer Scaffolding Proteins; C506926:ITPR1 protein, human; D053496:Inositol 1,4,5-Trisphosphate Receptors; D009479:Neuropeptides; D018160:Receptors, Cytoplasmic and Nuclear; D018094:Receptors, Metabotropic Glutamate; D019837:Ryanodine Receptor Calcium Release Channel