Entry
Name
Cardiac muscle contraction - Oncorhynchus kisutch (coho salmon)
Description
Contraction of the heart is a complex process initiated by the electrical excitation of cardiac myocytes (excitation-contraction coupling, ECC). In cardiac myocytes, Ca2+ influx induced by activation of voltage-dependent L-type Ca channels (DHP receptors) upon membrane depolarization triggers the release of Ca2+ via Ca2+ release channels (ryanodine receptors) of sarcoplasmic reticulum (SR) through a Ca2+ -induced Ca release (CICR) mechanism. Ca2+ ions released via the CICR mechanism diffuse through the cytosolic space to contractile proteins to bind to troponinC resulting in the release of inhibition induced by troponinI. The Ca2+ binding to troponinC thereby triggers the sliding of thin and thick filaments, that is, the activation of a crossbridge and subsequent cardiac force development and/or cell shortening. Recovery occurs as Ca2+ is pumped out of the cell by the Na+/Ca2+ exchanger (NCX) or is returned to the sarcoplasmic reticulum (SR) by sarco(endo)plasmic Ca2+ -ATPase (SERCA) pumps on the non-junctional region of the SR.
Class
Organismal Systems; Circulatory system
BRITE hierarchy
Pathway map
Ortholog table
Other DBs
Organism
Oncorhynchus kisutch (coho salmon) [GN:
oki ]
Gene
109882530 LOW QUALITY PROTEIN: voltage-dependent L-type calcium channel subunit alpha-1C-like [KO:K04850 ]
109869746 voltage-dependent L-type calcium channel subunit alpha-1D-like [KO:K04851 ]
109891346 voltage-dependent L-type calcium channel subunit alpha-1D-like isoform X1 [KO:K04851 ]
109907825 voltage-dependent L-type calcium channel subunit alpha-1D-like isoform X1 [KO:K04851 ]
109892681 voltage-dependent L-type calcium channel subunit alpha-1D-like isoform X1 [KO:K04851 ]
109869700 voltage-dependent L-type calcium channel subunit alpha-1F-like [KO:K04853 ]
109869670 dihydropyridine-sensitive L-type skeletal muscle calcium channel subunit alpha-1 isoform X1 [KO:K04857 ]
109891316 dihydropyridine-sensitive L-type skeletal muscle calcium channel subunit alpha-1-like [KO:K04857 ]
109885052 LOW QUALITY PROTEIN: voltage-dependent L-type calcium channel subunit alpha-1F-like [KO:K04857 ]
109899957 dihydropyridine-sensitive L-type skeletal muscle calcium channel subunit alpha-1-like [KO:K04857 ]
109893290 voltage-dependent L-type calcium channel subunit beta-1 isoform X1 [KO:K04862 ]
109898387 voltage-dependent L-type calcium channel subunit beta-1-like isoform X1 [KO:K04862 ]
109899494 voltage-dependent L-type calcium channel subunit beta-2 isoform X1 [KO:K04863 ]
109909321 voltage-dependent L-type calcium channel subunit beta-2 isoform X1 [KO:K04863 ]
109869667 voltage-dependent L-type calcium channel subunit beta-4-like [KO:K04864 ]
109908510 voltage-dependent L-type calcium channel subunit beta-3 [KO:K04864 ]
109868051 voltage-dependent L-type calcium channel subunit beta-4-like isoform X1 [KO:K04865 ]
109871003 voltage-dependent L-type calcium channel subunit beta-4-like [KO:K04865 ]
109876649 voltage-dependent L-type calcium channel subunit beta-4-like isoform X1 [KO:K04865 ]
109876447 voltage-dependent L-type calcium channel subunit beta-4-like isoform X1 [KO:K04865 ]
109879081 voltage-dependent calcium channel subunit alpha-2/delta-1-like isoform X1 [KO:K04858 ]
109879069 voltage-dependent calcium channel subunit alpha-2/delta-1-like isoform X1 [KO:K04858 ]
109866961 voltage-dependent calcium channel subunit alpha-2/delta-1-like isoform X1 [KO:K04858 ]
109878204 LOW QUALITY PROTEIN: voltage-dependent calcium channel subunit alpha-2/delta-2-like [KO:K04859 ]
109892502 voltage-dependent calcium channel subunit alpha-2/delta-2 isoform X1 [KO:K04859 ]
109890883 voltage-dependent calcium channel subunit alpha-2/delta-2 isoform X1 [KO:K04859 ]
109891622 voltage-dependent calcium channel subunit alpha-2/delta-3-like [KO:K04860 ]
109869219 voltage-dependent calcium channel subunit alpha-2/delta-3 [KO:K04860 ]
109867631 voltage-dependent calcium channel subunit alpha-2/delta-4-like isoform X1 [KO:K04861 ]
109898656 voltage-dependent calcium channel subunit alpha-2/delta-4-like isoform X1 [KO:K04861 ]
116360523 voltage-dependent calcium channel subunit alpha-2/delta-4-like [KO:K04861 ]
116360578 voltage-dependent calcium channel subunit alpha-2/delta-4-like [KO:K04861 ]
116371365 voltage-dependent calcium channel gamma-1 subunit-like [KO:K04866 ]
109889573 voltage-dependent calcium channel gamma-1 subunit-like [KO:K04866 ]
116359841 voltage-dependent calcium channel gamma-1 subunit-like [KO:K04866 ]
109884643 LOW QUALITY PROTEIN: voltage-dependent calcium channel gamma-1 subunit-like [KO:K04866 ]
116373136 voltage-dependent calcium channel gamma-3 subunit-like [KO:K04868 ]
116359884 LOW QUALITY PROTEIN: voltage-dependent calcium channel gamma-3 subunit-like [KO:K04868 ]
116360820 voltage-dependent calcium channel gamma-3 subunit-like [KO:K04868 ]
116359842 voltage-dependent calcium channel gamma-4 subunit-like [KO:K04869 ]
109865904 voltage-dependent calcium channel gamma-4 subunit-like [KO:K04869 ]
109894776 voltage-dependent calcium channel gamma-5 subunit-like [KO:K04870 ]
109865184 voltage-dependent calcium channel gamma-5 subunit-like [KO:K04870 ]
109868243 voltage-dependent calcium channel gamma-6 subunit-like [KO:K04871 ]
109908459 voltage-dependent calcium channel gamma-6 subunit-like [KO:K04871 ]
109880146 voltage-dependent calcium channel gamma-7 subunit-like [KO:K04872 ]
109906901 voltage-dependent calcium channel gamma-7 subunit-like [KO:K04872 ]
109868257 voltage-dependent calcium channel gamma-7 subunit-like [KO:K04872 ]
109868780 voltage-dependent calcium channel gamma-4 subunit isoform X1 [KO:K04873 ]
109907561 voltage-dependent calcium channel gamma-4 subunit-like [KO:K04873 ]
109903657 voltage-dependent calcium channel gamma-4 subunit-like [KO:K04873 ]
109907772 troponin C, slow skeletal and cardiac muscles isoform X2 [KO:K05865 ]
109901933 myosin regulatory light chain 2, ventricular/cardiac muscle isoform [KO:K10351 ]
109890979 cytochrome b-c1 complex subunit 1, mitochondrial-like [KO:K00414 ]
109900045 cytochrome b-c1 complex subunit 2, mitochondrial-like isoform X1 [KO:K00415 ]
109889057 cytochrome b-c1 complex subunit 6, mitochondrial-like [KO:K00416 ]
109902315 cytochrome b-c1 complex subunit 6, mitochondrial-like [KO:K00416 ]
109908854 cytochrome c oxidase subunit 4 isoform 1, mitochondrial isoform X1 [KO:K02263 ]
109869225 cytochrome c oxidase subunit 4 isoform 2, mitochondrial-like [KO:K02263 ]
109880923 cytochrome c oxidase subunit 4 isoform 1, mitochondrial-like [KO:K02263 ]
109895354 cytochrome c oxidase subunit 4 isoform 1, mitochondrial [KO:K02263 ]
109907973 cytochrome c oxidase subunit 4 isoform 2, mitochondrial-like [KO:K02263 ]
109907975 cytochrome c oxidase subunit 4 isoform 2, mitochondrial [KO:K02263 ]
109908931 cytochrome c oxidase subunit 7A2, mitochondrial-like isoform X1 [KO:K02270 ]
109889831 cytochrome c oxidase subunit 7A-related protein, mitochondrial [KO:K02270 ]
109865526 cytochrome c oxidase subunit 7A-related protein, mitochondrial [KO:K02270 ]
109899080 LOW QUALITY PROTEIN: cytochrome c oxidase subunit 7A-related protein, mitochondrial-like [KO:K02270 ]
109875678 sodium/potassium-transporting ATPase subunit beta-2-like [KO:K01540 ]
109906280 sodium/potassium-transporting ATPase subunit beta-3-like [KO:K01540 ]
109884062 sodium/potassium-transporting ATPase subunit beta-233-like [KO:K01540 ]
109871845 sodium/potassium-transporting ATPase subunit beta-3-like [KO:K01540 ]
109890491 sodium/potassium-transporting ATPase subunit beta-233 [KO:K01540 ]
109874478 sodium/potassium-transporting ATPase subunit beta-3-like [KO:K01540 ]
116353892 sodium/potassium-transporting ATPase subunit beta-2-like isoform X1 [KO:K01540 ]
116354032 sodium/potassium-transporting ATPase subunit beta-233-like [KO:K01540 ]
116354033 sodium/potassium-transporting ATPase subunit beta-233-like [KO:K01540 ]
109892675 sodium/potassium-transporting ATPase subunit beta-2-like isoform X2 [KO:K01540 ]
109880054 sodium/potassium-transporting ATPase subunit beta-233-like [KO:K01540 ]
109909562 sodium/potassium-transporting ATPase subunit gamma-like [KO:K01538 ]
Compound
Reference
Authors
Bers DM
Title
Calcium cycling and signaling in cardiac myocytes.
Journal
Reference
Authors
Bers DM
Title
Cardiac excitation-contraction coupling.
Journal
Reference
Authors
Endoh M
Title
Signal transduction and Ca2+ signaling in intact myocardium.
Journal
Reference
Authors
Endoh M
Title
Cardiac Ca2+ signaling and Ca2+ sensitizers.
Journal
Reference
Authors
Bers DM, Despa S
Title
Cardiac myocytes Ca2+ and Na+ regulation in normal and failing hearts.
Journal
Reference
Authors
Gordon AM, Homsher E, Regnier M
Title
Regulation of contraction in striated muscle.
Journal
Reference
Authors
Phrommintikul A, Chattipakorn N
Title
Roles of cardiac ryanodine receptor in heart failure and sudden cardiac death.
Journal
Reference
Authors
Lacinova L
Title
Voltage-dependent calcium channels.
Journal
Gen Physiol Biophys 24 Suppl 1:1-78 (2005)
Reference
Authors
Lingrel J, Moseley A, Dostanic I, Cougnon M, He S, James P, Woo A, O'Connor K, Neumann J
Title
Functional roles of the alpha isoforms of the Na,K-ATPase.
Journal
Reference
Authors
Berg JS, Powell BC, Cheney RE
Title
A millennial myosin census.
Journal
Reference
Authors
Parmacek MS, Solaro RJ
Title
Biology of the troponin complex in cardiac myocytes.
Journal
Reference
Authors
Yamashita H, Sugiura S, Fujita H, Yasuda S, Nagai R, Saeki Y, Sunagawa K, Sugi H
Title
Myosin light chain isoforms modify force-generating ability of cardiac myosin by changing the kinetics of actin-myosin interaction.
Journal
Reference
Authors
Pritchard TJ, Kranias EG
Title
Junctin and the histidine-rich Ca2+ binding protein: potential roles in heart failure and arrhythmogenesis.
Journal
Reference
Authors
Landstrom AP, Dobrev D, Wehrens XHT
Title
Calcium Signaling and Cardiac Arrhythmias.
Journal
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