Entry
Name
Cardiac muscle contraction - Chanodichthys erythropterus (predatory carp)
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
Other DBs
Organism
Chanodichthys erythropterus (predatory carp) [GN:
cery ]
Gene
137002903 atp1b3a; sodium/potassium-transporting ATPase subunit beta-3a [KO:K01540 ]
137004729 cox7a1; cytochrome c oxidase subunit 7A1, mitochondrial [KO:K02270 ]
137004772 atp1b3b; sodium/potassium-transporting ATPase subunit beta-3b [KO:K01540 ]
137007485 atp2a1l; ATPase sarcoplasmic/endoplasmic reticulum Ca2+ transporting 1, like isoform X1 [KO:K05853 ] [EC:7.2.2.10 ]
137007513 uqcrc2b; cytochrome b-c1 complex subunit 2, mitochondrial isoform X1 [KO:K00415 ]
137007601 cox7a2l; cytochrome c oxidase subunit 7A-related protein, mitochondrial [KO:K02270 ]
137008884 cacnb3a; voltage-dependent L-type calcium channel subunit beta-3a [KO:K04864 ]
137008938 cacnb3b; voltage-dependent L-type calcium channel subunit beta-4 [KO:K04864 ]
137009084 atp1b2a; sodium/potassium-transporting ATPase subunit beta-2a [KO:K01540 ]
137009344 cox4i2; cytochrome c oxidase subunit 4 isoform 2, mitochondrial isoform X1 [KO:K02263 ]
137010533 atp1b1a; sodium/potassium-transporting ATPase subunit beta-1a [KO:K01540 ]
137010626 cacna2d2a; voltage-dependent calcium channel subunit alpha-2/delta-2a isoform X1 [KO:K04859 ]
137010651 cacnb4b; voltage-dependent L-type calcium channel subunit beta-4b isoform X1 [KO:K04865 ]
137010895 uqcrh; cytochrome b-c1 complex subunit 6, mitochondrial [KO:K00416 ]
137010900 cacng5a; calcium channel, voltage-dependent, gamma subunit 5a [KO:K04870 ]
137010901 cacng1a; calcium channel, voltage-dependent, gamma subunit 1a isoform X1 [KO:K04866 ]
137010951 cacng4a; voltage-dependent calcium channel gamma-4 subunit [KO:K04869 ]
137011283 uqcrc1; cytochrome b-c1 complex subunit 1, mitochondrial isoform X1 [KO:K00414 ]
137011417 cacng2a; calcium channel, voltage-dependent, gamma subunit 2a [KO:K04867 ]
137012294 cacng3b; voltage-dependent calcium channel gamma-3 subunit [KO:K04868 ]
137012430 slc8a4a; solute carrier family 8 member 4a isoform X1 [KO:K05849 ]
137012767 cox8a; cytochrome c oxidase subunit 8A, mitochondrial [KO:K02273 ]
137012994 cox7b; cytochrome c oxidase subunit 7B, mitochondrial [KO:K02271 ]
137013322 cacng4b; calcium channel, voltage-dependent, gamma subunit 4b [KO:K04869 ]
137013330 cacng1b; voltage-dependent calcium channel gamma-1 subunit [KO:K04866 ]
137015079 cacna2d4b; voltage-dependent calcium channel subunit alpha-2/delta-4 [KO:K04861 ]
137017468 cacnb1; voltage-dependent L-type calcium channel subunit beta-1 isoform X1 [KO:K04862 ]
137017573 cox6a2; cytochrome c oxidase subunit 6A2, mitochondrial [KO:K02266 ]
137017975 uqcrc2a; ubiquinol-cytochrome c reductase core protein 2a [KO:K00415 ]
137017999 cacng5b; voltage-dependent calcium channel gamma-5 subunit [KO:K04870 ]
137020991 cacna2d3; voltage-dependent calcium channel subunit alpha-2/delta-3 [KO:K04860 ]
137021437 cacna1da; calcium channel, voltage-dependent, L type, alpha 1D subunit, a isoform X1 [KO:K04851 ]
137022627 cox4i1; cytochrome c oxidase subunit 4 isoform 1, mitochondrial [KO:K02263 ]
137024487 cacna2d1a; voltage-dependent calcium channel subunit alpha-2/delta-1a [KO:K04858 ]
137024507 cacna1c; voltage-dependent L-type calcium channel subunit alpha-1C isoform X1 [KO:K04850 ]
137024601 cacna2d4a; voltage-dependent calcium channel subunit alpha-2/delta-4 [KO:K04861 ]
137025686 cacng7b; voltage-dependent calcium channel gamma-7 subunit [KO:K04872 ]
137025702 cacng8b; voltage-dependent calcium channel gamma-4 subunit [KO:K04873 ]
137026229 myl2b; myosin, light chain 2b, regulatory, cardiac, slow [KO:K10351 ]
137026362 cacna1fb; calcium channel, voltage-dependent, L type, alpha 1F subunit [KO:K04853 ]
137026591 cacna1fa; voltage-dependent L-type calcium channel subunit alpha-1D [KO:K04853 ]
137026710 cacna1db; LOW QUALITY PROTEIN: voltage-dependent L-type calcium channel subunit alpha-1D [KO:K04851 ]
137027151 cacna1sb; calcium channel, voltage-dependent, L type, alpha 1S subunit, b [KO:K04857 ]
137027229 cox6a1; cytochrome c oxidase subunit 6A1, mitochondrial [KO:K02266 ]
137027389 cacna2d3a; voltage-dependent calcium channel subunit alpha-2/delta-3 [KO:K04860 ]
137028262 cacna1sa; calcium channel, voltage-dependent, L type, alpha 1S subunit, a [KO:K04857 ]
137029249 cacna2d2b; voltage-dependent calcium channel subunit alpha-2/delta-2b isoform X1 [KO:K04859 ]
137029460 cox5ba; cytochrome c oxidase subunit 5B, mitochondrial [KO:K02265 ]
137030029 cacnb2a; voltage-dependent L-type calcium channel subunit beta-2a isoform X1 [KO:K04863 ]
137030130 unm_hu7910; uncharacterized abhydrolase domain-containing protein DDB_G0269086 isoform X1 [KO:K00476 ] [EC:1.14.11.16 ]
137031822 cacng6b; voltage-dependent calcium channel gamma-6 subunit [KO:K04871 ]
137032538 cacng3a; voltage-dependent calcium channel gamma-3 subunit [KO:K04868 ]
137032672 atp1b1b; sodium/potassium-transporting ATPase subunit beta-1b [KO:K01540 ]
137034061 fxyd2; sodium/potassium-transporting ATPase subunit gamma [KO:K01538 ]
137034444 atp1b2b; sodium/potassium-transporting ATPase subunit beta-2b isoform X1 [KO:K01540 ]
137034570 cox7c; cytochrome c oxidase subunit 7C, mitochondrial [KO:K02272 ]
137035408 cacnb4a; voltage-dependent L-type calcium channel subunit beta-4a isoform X1 [KO:K04865 ]
137037630 cacng8a; calcium channel, voltage-dependent, gamma subunit 8a [KO:K04873 ]
137037858 cacng6a; calcium channel, voltage-dependent, gamma subunit 6a [KO:K04871 ]
137037915 cacng7a; calcium channel, voltage-dependent, gamma subunit 7a isoform X1 [KO:K04872 ]
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
Related pathway
KO pathway