Entry
Name
Cholinergic synapse
Description
Acetylcholine (ACh) is a neurotransmitter widely distributed in the central (and also peripheral, autonomic and enteric) nervous system (CNS). In the CNS, ACh facilitates many functions, such as learning, memory, attention and motor control. When released in the synaptic cleft, ACh binds to two distinct types of receptors: Ionotropic nicotinic acetylcholine receptors (nAChR) and metabotropic muscarinic acetylcholine receptors (mAChRs). The activation of nAChR by ACh leads to the rapid influx of Na+ and Ca2+ and subsequent cellular depolarization. Activation of mAChRs is relatively slow (milliseconds to seconds) and, depending on the subtypes present (M1-M5), they directly alter cellular homeostasis of phospholipase C, inositol trisphosphate, cAMP, and free calcium. In the cleft, ACh may also be hydrolyzed by acetylcholinesterase (AChE) into choline and acetate. The choline derived from ACh hydrolysis is recovered by a presynaptic high-affinity choline transporter (CHT).
Class
Organismal Systems; Nervous system
BRITE hierarchy
Pathway map
Drug
D05076 Morantel tartrate (USP)
Other DBs
Orthology
K00922 PIK3CA_B_D; phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha/beta/delta [EC:2.7.1.153 ]
K02161 BCL2; apoptosis regulator Bcl-2
K02649 PIK3R1_2_3; phosphoinositide-3-kinase regulatory subunit alpha/beta/delta
K04129 CHRM1; muscarinic acetylcholine receptor M1
K04130 CHRM2; muscarinic acetylcholine receptor M2
K04131 CHRM3; muscarinic acetylcholine receptor M3
K04132 CHRM4; muscarinic acetylcholine receptor M4
K04133 CHRM5; muscarinic acetylcholine receptor M5
K04344 CACNA1A, CAV2.1; voltage-dependent calcium channel P/Q type alpha-1A
K04347 GNG12; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-12
K04368 MAP2K1, MEK1; mitogen-activated protein kinase kinase 1 [EC:2.7.12.2 ]
K04374 ATF4, CREB2; cyclic AMP-dependent transcription factor ATF-4
K04379 FOS; proto-oncogene protein c-fos
K04515 CAMK2; calcium/calmodulin-dependent protein kinase (CaM kinase) II [EC:2.7.11.17 ]
K04534 GNAO, G-ALPHA-O; guanine nucleotide-binding protein G(o) subunit alpha
K04536 GNB1; guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
K04537 GNB2; guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-2
K04538 GNB4; guanine nucleotide-binding protein subunit beta-4
K04539 GNB5; guanine nucleotide-binding protein subunit beta-5
K04540 GNG3; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-3
K04541 GNG4; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-4
K04542 GNG5; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-5
K04543 GNG7; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-7
K04544 GNG8; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-8
K04545 GNG10; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-10
K04546 GNG11; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-11
K04547 GNG13; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-13
K04548 GNGT1; guanine nucleotide-binding protein G(T) subunit gamma-T1
K04549 GNGT2; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-T2
K04630 GNAI; guanine nucleotide-binding protein G(i) subunit alpha
K04634 GNAQ; guanine nucleotide-binding protein G(q) subunit alpha
K04635 GNA11; guanine nucleotide-binding protein subunit alpha-11
K04805 CHRNA3; nicotinic acetylcholine receptor alpha-3
K04806 CHRNA4; nicotinic acetylcholine receptor alpha-4
K04808 CHRNA6; nicotinic acetylcholine receptor alpha-6
K04809 CHRNA7; nicotinic acetylcholine receptor alpha-7
K04813 CHRNB2; nicotinic acetylcholine receptor beta-2
K04815 CHRNB4; nicotinic acetylcholine receptor beta-4
K04849 CACNA1B, CAV2.2; voltage-dependent calcium channel N type alpha-1B
K04850 CACNA1C, CAV1.2; voltage-dependent calcium channel L type alpha-1C
K04851 CACNA1D, CAV1.3; voltage-dependent calcium channel L type alpha-1D
K04853 CACNA1F, CAV1.4; voltage-dependent calcium channel L type alpha-1F
K04857 CACNA1S, CAV1.1; voltage-dependent calcium channel L type alpha-1S
K04926 KCNQ1, KV7.1; potassium voltage-gated channel KQT-like subfamily member 1
K04927 KCNQ2, KV7.2; potassium voltage-gated channel KQT-like subfamily member 2
K04928 KCNQ3, KV7.3; potassium voltage-gated channel KQT-like subfamily member 3
K04929 KCNQ4, KV7.4; potassium voltage-gated channel KQT-like subfamily member 4
K04930 KCNQ5, KV7.5; potassium voltage-gated channel KQT-like subfamily member 5
K04958 ITPR1; inositol 1,4,5-triphosphate receptor type 1
K04959 ITPR2; inositol 1,4,5-triphosphate receptor type 2
K04960 ITPR3; inositol 1,4,5-triphosphate receptor type 3
K04996 KCNJ2, KIR2.1; potassium inwardly-rectifying channel subfamily J member 2
K04997 KCNJ3, KIR3.1; potassium inwardly-rectifying channel subfamily J member 3
K04998 KCNJ4, KIR2.3; potassium inwardly-rectifying channel subfamily J member 4
K05000 KCNJ6, KIR3.2; potassium inwardly-rectifying channel subfamily J member 6
K05005 KCNJ12_18, KIR2.2, KIR2.6; potassium inwardly-rectifying channel subfamily J member 12/18
K05007 KCNJ14, KIR2.4; potassium inwardly-rectifying channel subfamily J member 14
K05869 CAMK4; calcium/calmodulin-dependent protein kinase IV [EC:2.7.11.17 ]
K05870 CREB1; cyclic AMP-responsive element-binding protein 1
K07825 GNB3; guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-3
K07826 GNG2; guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
K07827 KRAS, KRAS2; GTPase KRas
K09047 CREB5, CREBPA; cyclic AMP-responsive element-binding protein 5
K09048 CREB3; cyclic AMP-responsive element-binding protein 3
K14387 SLC5A7, CHT1; solute carrier family 5 (high affinity choline transporter), member 7
K14636 SLC18A3, VACHT; MFS transporter, DHA1 family, solute carrier family 18 (vesicular acetylcholine transporter), member 3
K21289 PIK3CG; phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit gamma [EC:2.7.1.153 ]
K21290 PIK3R5_6; phosphoinositide-3-kinase regulatory subunit 5/6
Compound
C01245 D-myo-Inositol 1,4,5-trisphosphate
C04637 1-Phosphatidyl-D-myo-inositol 4,5-bisphosphate
Reference
Authors
Nestler EJ, Hyman SE, Malenka RC.
Title
Molecular neuropharmacology: A foundation for clinical neuroscience
Journal
The McGraw-Hill Companies, Inc. (2001)
Reference
Authors
Nicholls JG, Martin AR, Wallace BG, Fuchs PA.
Title
From neuron to brain, 4th ed.
Journal
Sunderland, MA: Sinauer associates (2001)
Reference
Authors
Dajas-Bailador F, Wonnacott S
Title
Nicotinic acetylcholine receptors and the regulation of neuronal signalling.
Journal
Reference
Authors
Resende RR, Adhikari A
Title
Cholinergic receptor pathways involved in apoptosis, cell proliferation and neuronal differentiation.
Journal
Reference
Authors
Origlia N, Kuczewski N, Pesavento E, Aztiria E, Domenici L
Title
The role of cholinergic system in neuronal plasticity: focus on visual cortex and muscarinic receptors.
Journal
Arch Ital Biol 146:165-88 (2008)
Reference
Authors
Oldenburg IA, Ding JB
Title
Cholinergic modulation of synaptic integration and dendritic excitability in the striatum.
Journal
Reference
Authors
Lanzafame AA, Christopoulos A, Mitchelson F
Title
Cellular signaling mechanisms for muscarinic acetylcholine receptors.
Journal
Reference
Authors
Brown DA
Title
Muscarinic acetylcholine receptors (mAChRs) in the nervous system: some functions and mechanisms.
Journal
Reference
Authors
Chang KT, Berg DK
Title
Voltage-gated channels block nicotinic regulation of CREB phosphorylation and gene expression in neurons.
Journal
Reference
Authors
Soreq H, Seidman S
Title
Acetylcholinesterase--new roles for an old actor.
Journal
Reference
Authors
Sharma G, Vijayaraghavan S
Title
Nicotinic receptor signaling in nonexcitable cells.
Journal
Reference
Authors
Araque A, Martin ED, Perea G, Arellano JI, Buno W
Title
Synaptically released acetylcholine evokes Ca2+ elevations in astrocytes in hippocampal slices.
Journal
Reference
Authors
Lucas-Meunier E, Fossier P, Baux G, Amar M
Title
Cholinergic modulation of the cortical neuronal network.
Journal
Reference
Authors
Abreu-Villaca Y, Filgueiras CC, Manhaes AC
Title
Developmental aspects of the cholinergic system.
Journal
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