Signal transduction

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Signaling Pathways:

ABA Signaling Pathway

Protein Kinases:

Protein kinase C

MAPK


CAMP-dependent protein kinase

Chemotaxis:

Mechanotransduction:

Thermoception

Transient receptor potential channels

Visual phototransduction

Light is detected by rhodopsin in rod and cone cells.

Photoreceptor pigments

Circadian clock

Protein phosphatases:

Second messengers

cAMP

CAMP-dependent protein kinase

IP3

Receptors that activate this pathway (Phospholipase C) are mainly G protein-coupled receptors coupled to the Gαq subunit, including:

  • 5-HT2 serotonergic receptors (5-hydroxytryptamine receptor#Structural highlights/Specific Function of 5-HT2B).
  • α1 adrenergic receptors
  • Calcitonin receptors
  • Histamine H1 receptor. The H1 receptor is a histamine receptor belonging to the family of rhodopsin-like G-protein-coupled receptors. The H1 receptor is linked to an intracellular G-protein (Gq) that activates phospholipase C and the inositol triphosphate signaling pathway. When a ligand binds to a G protein-coupled receptor that is coupled to a Gq heterotrimeric G protein, the α-subunit of Gq can bind to and induce activity in the PLC isozyme PLC-β, which results in the cleavage of PIP2 into IP3 and DAG.
  • Metabotropic glutamate receptor 1 and metabotropic glutamate receptor 5 belong to group I and activate phospholipase C. For details see Metabotropic glutamate receptor 5.
  • M1, M3, and M5 muscarinic receptors. Muscarinic acetylcholine receptors (mAChR) contain 5 subtypes M1-M5. Subtypes M1, M3, M5 activate phospholipase C which leads to activation of protein kinase C.
  • Inositol 1,4,5-Trisphosphate Receptor

Paracrine signaling

Sonic Hedgehog

Ca2+ signalling processes


Nicotinic Acetylcholine Receptor, PDB code 2bg9

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ReferencesReferences

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

Alexander Berchansky