Entry
Name
Cardiac muscle contraction - Macaca mulatta (rhesus monkey)
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
Macaca mulatta (rhesus monkey) [GN:
mcc ]
Gene
100428437 COX7B2; cytochrome c oxidase subunit 7B2, mitochondrial [KO:K02271 ]
100429280 COX7C; cytochrome c oxidase subunit 7C, mitochondrial [KO:K02272 ]
106994852 CACNG8; voltage-dependent calcium channel gamma-8 subunit [KO:K04873 ]
574193 SLC8A1; sodium/calcium exchanger 1 precursor [KO:K05849 ]
677864 UQCRC1; cytochrome b-c1 complex subunit 1, mitochondrial [KO:K00414 ]
692061 COX5A; cytochrome c oxidase subunit 5A, mitochondrial precursor [KO:K02264 ]
693356 CACNA2D3; voltage-dependent calcium channel subunit alpha-2/delta-3 isoform X1 [KO:K04860 ]
693811 COX4I1; cytochrome c oxidase subunit 4 isoform 1, mitochondrial [KO:K02263 ]
693924 CACNA1D; voltage-dependent L-type calcium channel subunit alpha-1D isoform X1 [KO:K04851 ]
695172 CACNB4; voltage-dependent L-type calcium channel subunit beta-4 [KO:K04865 ]
695864 CACNB1; voltage-dependent L-type calcium channel subunit beta-1 isoform X2 [KO:K04862 ]
696294 CACNG2; voltage-dependent calcium channel gamma-2 subunit [KO:K04867 ]
697047 TNNC1; troponin C, slow skeletal and cardiac muscles [KO:K05865 ]
697967 UQCRC2; cytochrome b-c1 complex subunit 2, mitochondrial [KO:K00415 ]
698470 TNNI3; troponin I, cardiac muscle isoform X2 [KO:K12044 ]
700443 ATP1B1; sodium/potassium-transporting ATPase subunit beta-1 [KO:K01540 ]
700518 CYC1; cytochrome c1, heme protein, mitochondrial [KO:K00413 ]
701226 CACNB2; voltage-dependent L-type calcium channel subunit beta-2 [KO:K04863 ]
701324 CACNG3; voltage-dependent calcium channel gamma-3 subunit [KO:K04868 ]
702429 CACNA2D2; voltage-dependent calcium channel subunit alpha-2/delta-2 isoform X7 [KO:K04859 ]
705236 TPM1; tropomyosin alpha-1 chain isoform X8 [KO:K10373 ]
706099 COX7B; cytochrome c oxidase subunit 7B, mitochondrial [KO:K02271 ]
707768 ATP2A3; sarcoplasmic/endoplasmic reticulum calcium ATPase 3 isoform X3 [KO:K05853 ] [EC:7.2.2.10 ]
707968 UQCRH; cytochrome b-c1 complex subunit 6, mitochondrial [KO:K00416 ]
708058 ATP2A1; sarcoplasmic/endoplasmic reticulum calcium ATPase 1 isoform X1 [KO:K05853 ] [EC:7.2.2.10 ]
708091 CACNB3; voltage-dependent L-type calcium channel subunit beta-3 [KO:K04864 ]
708215 CACNA2D1; voltage-dependent calcium channel subunit alpha-2/delta-1 isoform X1 [KO:K04858 ]
708396 UQCR; ubiquinol-cytochrome c reductase, 6.4kDa subunit [KO:K00420 ]
708706 CACNA1S; voltage-dependent L-type calcium channel subunit alpha-1S [KO:K04857 ]
708950 UQCRQ; ubiquinol-cytochrome c reductase, complex III subunit VII, 9.5kDa [KO:K00418 ]
710429 SLC9A6; sodium/hydrogen exchanger 6 isoform X2 [KO:K12041 ]
710702 ATP2A2; sarcoplasmic/endoplasmic reticulum calcium ATPase 2 isoform X3 [KO:K05853 ] [EC:7.2.2.10 ]
710906 SLC9A7; sodium/hydrogen exchanger 7 isoform X1 [KO:K12041 ]
711937 MYL2; myosin regulatory light chain 2, ventricular/cardiac muscle isoform [KO:K10351 ]
712764 COX7A2L; cytochrome c oxidase subunit 7A-related protein, mitochondrial [KO:K02270 ]
713061 SLC8A3; sodium/calcium exchanger 3 isoform X2 [KO:K05849 ]
713095 COX4I2; cytochrome c oxidase subunit 4 isoform 2, mitochondrial [KO:K02263 ]
713995 COX6A2; cytochrome c oxidase subunit 6A2, mitochondrial [KO:K02266 ]
715787 CACNA1F; voltage-dependent L-type calcium channel subunit alpha-1F [KO:K04853 ]
716093 ATP1B2; sodium/potassium-transporting ATPase subunit beta-2 [KO:K01540 ]
716682 ATP1B3; sodium/potassium-transporting ATPase subunit beta-3 [KO:K01540 ]
718007 COX8A; cytochrome c oxidase subunit 8A, mitochondrial [KO:K02273 ]
718243 SLC8A2; sodium/calcium exchanger 2 isoform X1 [KO:K05849 ]
718465 CACNG5; voltage-dependent calcium channel gamma-5 subunit isoform X1 [KO:K04870 ]
718540 CACNG4; voltage-dependent calcium channel gamma-4 subunit isoform X2 [KO:K04869 ]
718591 CACNG1; voltage-dependent calcium channel gamma-1 subunit [KO:K04866 ]
718647 HRC; sarcoplasmic reticulum histidine-rich calcium-binding protein isoform X1 [KO:K23450 ]
719428 TPM4; tropomyosin alpha-4 chain isoform X1 [KO:K10375 ]
719623 ATP1A4; sodium/potassium-transporting ATPase subunit alpha-4 isoform X1 [KO:K01539 ] [EC:7.2.2.13 ]
720079 SLC9A1; sodium/hydrogen exchanger 1 isoform X3 [KO:K05742 ]
720271 CACNG7; voltage-dependent calcium channel gamma-7 subunit isoform X1 [KO:K04872 ]
720548 CACNG6; voltage-dependent calcium channel gamma-6 subunit [KO:K04871 ]
721703 CACNA2D4; voltage-dependent calcium channel subunit alpha-2/delta-4 [KO:K04861 ]
721721 CACNA1C; voltage-dependent L-type calcium channel subunit alpha-1C isoform X13 [KO:K04850 ]
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