Calexcitin

Calexcitin is a Calcium-binding protein first isolated in the sea snail Hermissenda crassicornis, upregulated following Pavlovian conditioning.

External links

calexcitin protein, C elegans at the US National Library of Medicine Medical Subject Headings (MeSH)
Nelson T, Cavallaro S, Yi C, McPhie D, Schreurs B, Gusev P, Favit A, Zohar O, Kim J, Beushausen S, Ascoli G, Olds J, Neve R, Alkon D (1996). "Calexcitin: a signaling protein that binds calcium and GTP, inhibits potassium channels, and enhances membrane excitability". Proc Natl Acad Sci USA 93 (24): 13808–13. doi:10.1073/pnas.93.24.13808. PMC 19433. PMID 8943017.

Cell signaling: calcium signaling and calcium metabolism

Cell membrane

Ion pumps	SERCA Sodium-calcium exchanger

Cell membrane calcium channels	VDCC TRP NMDA receptor AMPA receptor 5-HT3 receptor P2X purinoreceptor

Adhesion molecules	Cadherin

Other	Calcium-sensing receptor

Intracellular signaling
& calc. regulation

Second messengers	IP3 NAADP cADPR

Store gates (ligand-gated calcium channel)	IP3 receptor CICR Ryanodine receptor

Molecular switches, and kinases	Troponin C Calmodulin CaM kinases PKC NCS

Chelators and calcium sensors	Calbindin S100 pervalbumin Calretinin Calsequestrin Sarcalumenin Phospholamban Synaptotagmins

Proteases	Calpain

Cytoskeleton remodeling proteins	Gelsolin

Chaperones	Calreticulin Calnexin

Other	Vitamin D

Calcium-binding
protein domains

Extracellular ligands

Calcium-binding proteins

Intracellular calcium-sensing proteins	Calmodulin Calnexin Calreticulin Gelsolin neuronal Hippocalcin Neurocalcin Recoverin

Membrane protein	Annexin A1 A2 A5 Fibulin FBLN1 FBLN2 FBLN5 Vitamin D-dependent calcium-binding protein/Calbindin Calexcitin Calsequestrin Osteocalcin Osteonectin S-100 Synaptotagmin

Cytoskeleton	Troponin C

Extracellular matrix	Matrix gla protein

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