Entry
Name
Long-term potentiation - Equus caballus (horse)
Description
Hippocampal long-term potentiation (LTP), a long-lasting increase in synaptic efficacy, is the molecular basis for learning and memory. Tetanic stimulation of afferents in the CA1 region of the hippocampus induces glutamate release and activation of glutamate receptors in dendritic spines. A large increase in [Ca2+]i resulting from influx through NMDA receptors leads to constitutive activation of CaM kinase II (CaM KII) . Constitutively active CaM kinase II phosphorylates AMPA receptors, resulting in potentiation of the ionic conductance of AMPA receptors. Early-phase LTP (E-LTP) expression is due, in part, to this phosphorylation of the AMPA receptor. It is hypothesized that postsynaptic Ca2+ increases generated through NMDA receptors activate several signal transduction pathways including the Erk/MAP kinase and cAMP regulatory pathways. The convergence of these pathways at the level of the CREB/CRE transcriptional pathway may increase expression of a family of genes required for late-phase LTP (L-LTP).
Class
Organismal Systems; Nervous system
BRITE hierarchy
Pathway map
Ortholog table
Other DBs
Organism
Equus caballus (horse) [GN:
ecb ]
Gene
100064138 CAMK2G; calcium/calmodulin-dependent protein kinase type II subunit gamma isoform X13 [KO:K04515 ] [EC:2.7.11.17 ]
100071654 CAMK2A; calcium/calmodulin-dependent protein kinase type II subunit alpha isoform X1 [KO:K04515 ] [EC:2.7.11.17 ]
100072618 CAMK2D; calcium/calmodulin-dependent protein kinase type II subunit delta isoform X6 [KO:K04515 ] [EC:2.7.11.17 ]
100146368 CAMK2B; calcium/calmodulin-dependent protein kinase type II subunit beta isoform X1 [KO:K04515 ] [EC:2.7.11.17 ]
100050541 RAPGEF3; rap guanine nucleotide exchange factor 3 isoform X2 [KO:K08014 ]
100057357 PPP3CC; serine/threonine-protein phosphatase 2B catalytic subunit gamma isoform isoform X1 [KO:K04348 ] [EC:3.1.3.16 ]
100067434 PPP3CA; serine/threonine-protein phosphatase 2B catalytic subunit alpha isoform isoform X4 [KO:K04348 ] [EC:3.1.3.16 ]
100072862 PPP3CB; serine/threonine-protein phosphatase 2B catalytic subunit beta isoform isoform X1 [KO:K04348 ] [EC:3.1.3.16 ]
100059861 GRIN1; glutamate receptor ionotropic, NMDA 1 isoform X1 [KO:K05208 ]
100051329 GRIN2A; glutamate receptor ionotropic, NMDA 2A isoform X1 [KO:K05209 ]
100052410 GRIN2C; glutamate receptor ionotropic, NMDA 2C isoform X1 [KO:K05211 ]
100049924 CACNA1C; voltage-dependent L-type calcium channel subunit alpha-1C isoform X1 [KO:K04850 ]
100064482 CALML6; LOW QUALITY PROTEIN: calmodulin-like protein 6 [KO:K02183 ]
100070334 ATF4; cyclic AMP-dependent transcription factor ATF-4 [KO:K04374 ]
100052808 ITPR1; inositol 1,4,5-trisphosphate receptor type 1 isoform X1 [KO:K04958 ]
100064557 ITPR2; inositol 1,4,5-trisphosphate receptor type 2 isoform X1 [KO:K04959 ]
100053019 ITPR3; inositol 1,4,5-trisphosphate receptor type 3 isoform X1 [KO:K04960 ]
100063136 GNAQ; guanine nucleotide-binding protein G(q) subunit alpha isoform X1 [KO:K04634 ]
100057315 PLCB2; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-2 isoform X1 [KO:K05858 ] [EC:3.1.4.11 ]
100051558 PLCB1; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-1 isoform X1 [KO:K05858 ] [EC:3.1.4.11 ]
100051485 PLCB4; 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-4 isoform X1 [KO:K05858 ] [EC:3.1.4.11 ]
Compound
C01245 D-myo-Inositol 1,4,5-trisphosphate
Reference
Authors
Blitzer RD, Iyengar R, Landau EM.
Title
Postsynaptic signaling networks: cellular cogwheels underlying long-term plasticity.
Journal
Reference
Authors
Soderling TR, Derkach VA.
Title
Postsynaptic protein phosphorylation and LTP.
Journal
Reference
Authors
Poser S, Storm DR.
Title
Role of Ca2+-stimulated adenylyl cyclases in LTP and memory formation.
Journal
Reference
Authors
Xia Z, Storm DR.
Title
The role of calmodulin as a signal integrator for synaptic plasticity.
Journal
Reference
Authors
Purves D, Augustine GJ (ed).
Title
Neuroscience
Journal
Sunderland, Mass.:Sinauer Associates (2004)
Reference
Authors
Lynch MA.
Title
Long-term potentiation and memory.
Journal
Reference
Authors
Kelly PT, Mackinnon RL 2nd, Dietz RV, Maher BJ, Wang J.
Title
Postsynaptic IP3 receptor-mediated Ca2+ release modulates synaptic transmission in hippocampal neurons.
Journal
Reference
Authors
Berridge MJ.
Title
Neuronal calcium signaling.
Journal
Related pathway
KO pathway
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