Entry
Name
Long-term depression - Macaca mulatta (rhesus monkey)
Description
Cerebellar long-term depression (LTD), thought to be a molecular and cellular basis for cerebellar learning, is a process involving a decrease in the synaptic strength between parallel fiber (PF) and Purkinje cells (PCs) induced by the conjunctive activation of PFs and climbing fiber (CF). Multiple signal transduction pathways have been shown to be involved in this process. Activation of PFs terminating on spines in dendritic branchlets leads to glutamate release and activation of both AMPA and mGluRs. Activation of CFs, which make multiple synaptic contacts on proximal dendrites, also via AMPA receptors, opens voltage-gated calcium channels (VGCCs) and causes a generalized influx of calcium. These cellular signals, generated from two different synaptic origins, trigger a cascade of events culminating in a phosphorylation-dependent, long-term reduction in AMPA receptor sensitivity at the PF-PC synapse. This may take place either through receptor internalization and/or through receptor desensitization.
Class
Organismal Systems; Nervous system
BRITE hierarchy
Pathway map
Other DBs
Organism
Macaca mulatta (rhesus monkey) [GN:
mcc ]
Gene
100429106 GNA12; guanine nucleotide-binding protein subunit alpha-12 isoform X1 [KO:K04346 ]
574095 CRHR1; corticotropin-releasing factor receptor 1 precursor [KO:K04578 ]
574344 GRIA2; glutamate receptor 2 isoform 1 precursor [KO:K05198 ]
574394 GNAO1; guanine nucleotide-binding protein G(o) subunit alpha [KO:K04534 ]
694066 PPP1R17; protein phosphatase 1 regulatory subunit 17 [KO:K08067 ]
695118 PPP2CB; serine/threonine-protein phosphatase 2A catalytic subunit beta isoform [KO:K04382 ] [EC:3.1.3.16 ]
698444 IGF1; insulin-like growth factor I precursor [KO:K05459 ]
698736 GRM1; metabotropic glutamate receptor 1 precursor [KO:K04603 ]
699310 GNAI3; guanine nucleotide-binding protein G(k) subunit alpha [KO:K04630 ]
701951 PLCB2; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-2 [KO:K05858 ] [EC:3.1.4.11 ]
703669 ITPR1; inositol 1,4,5-trisphosphate receptor type 1 isoform X1 [KO:K04958 ]
703780 GNAI2; guanine nucleotide-binding protein G(i) subunit alpha-2 [KO:K04630 ]
704787 GRID2; glutamate receptor ionotropic, delta-2 isoform X1 [KO:K05207 ]
705680 GNAQ; guanine nucleotide-binding protein G(q) subunit alpha [KO:K04634 ]
706704 GNAZ; guanine nucleotide-binding protein G(z) subunit alpha [KO:K04535 ]
708714 ITPR2; inositol 1,4,5-trisphosphate receptor type 2 isoform X1 [KO:K04959 ]
708940 GNAI1; guanine nucleotide-binding protein G(i) subunit alpha-1 isoform X1 [KO:K04630 ]
710326 PPP2CA; serine/threonine-protein phosphatase 2A catalytic subunit alpha isoform isoform X1 [KO:K04382 ] [EC:3.1.3.16 ]
710387 PPP2R1B; serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A beta isoform isoform X1 [KO:K03456 ]
717764 PLCB3; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-3 [KO:K05858 ] [EC:3.1.4.11 ]
718040 ITPR3; inositol 1,4,5-trisphosphate receptor type 3 isoform X1 [KO:K04960 ]
718144 GNA13; guanine nucleotide-binding protein subunit alpha-13 isoform X1 [KO:K04639 ]
718291 CACNA1A; voltage-dependent P/Q-type calcium channel subunit alpha-1A isoform X5 [KO:K04344 ]
718387 PLCB1; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-1 [KO:K05858 ] [EC:3.1.4.11 ]
718418 PLCB4; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-4 isoform X3 [KO:K05858 ] [EC:3.1.4.11 ]
719929 PPP2R1A; serine/threonine-protein phosphatase 2A 65 kDa regulatory subunit A alpha isoform [KO:K03456 ]
721649 GNA11; guanine nucleotide-binding protein subunit alpha-11 [KO:K04635 ]
721821 MAP2K2; dual specificity mitogen-activated protein kinase kinase 2 isoform X1 [KO:K04369 ] [EC:2.7.12.2 ]
Compound
C01245 D-myo-Inositol 1,4,5-trisphosphate
Reference
Authors
Ito M.
Title
The molecular organization of cerebellar long-term depression.
Journal
Reference
Authors
Ito M.
Title
Cerebellar long-term depression: characterization, signal transduction, and functional roles.
Journal
Reference
Authors
Purves D, Augustine GJ (ed).
Title
Neuroscience
Journal
Sunderland, Mass.:Sinauer Associates (2004)
Reference
Authors
Daniel H, Levenes C, Crepel F.
Title
Cellular mechanisms of cerebellar LTD.
Journal
Reference
Authors
Levenes C, Daniel H, Crepel F.
Title
Long-term depression of synaptic transmission in the cerebellum: cellular and molecular mechanisms revisited.
Journal
Reference
Authors
Metzger F, Kapfhammer JP.
Title
Protein kinase C: its role in activity-dependent Purkinje cell dendritic development and plasticity.
Journal
Related pathway
KO pathway