KEGG   PATHWAY: teo04260
Entry
teo04260                    Pathway                                
Name
Cardiac muscle contraction - Tauraco erythrolophus (red-crested turaco)
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
Pathway map
teo04260  Cardiac muscle contraction
teo04260

Other DBs
GO: 0060048
Organism
Tauraco erythrolophus (red-crested turaco) [GN:teo]
Gene
104369910  [KO:K02272]
104370118  [KO:K00415]
104370202  [KO:K02266]
104370338  [KO:K10375]
104370607  [KO:K12314]
104370627  [KO:K12314]
104371005  [KO:K02264]
104371060  [KO:K10373]
104371070  TNNC1; troponin C, slow skeletal and cardiac muscles isoform X1 [KO:K05865]
104371383  [KO:K00416]
104372067  [KO:K05849]
104372204  SLC8A1; sodium/calcium exchanger 1 [KO:K05849]
104372833  ATP1B3; sodium/potassium-transporting ATPase subunit beta-3 [KO:K01540]
104372839  CACNG5; voltage-dependent calcium channel gamma-5 subunit [KO:K04870]
104373041  [KO:K00417]
104373060  ATP1B4; protein ATP1B4 [KO:K01540]
104373238  MYL3; myosin light chain 3 [KO:K12749]
104374666  [KO:K04865]
104374824  [KO:K23445]
104375407  CACNG2; LOW QUALITY PROTEIN: voltage-dependent calcium channel gamma-2 subunit [KO:K04867]
104375551  ATP2A2; sarcoplasmic/endoplasmic reticulum calcium ATPase 2 [KO:K05853] [EC:7.2.2.10]
104375552  [KO:K10351]
104375943  [KO:K10351]
104376050  [KO:K04860]
104376174  [KO:K02270]
104376294  SLC9A1; sodium/hydrogen exchanger 1 [KO:K05742]
104376384  TRDN; triadin [KO:K23449]
104377037  [KO:K23449]
104377064  TNNT2; LOW QUALITY PROTEIN: troponin T, cardiac muscle [KO:K12045]
104377263  [KO:K02271]
104377604  [KO:K02270]
104378050  CACNG1; voltage-dependent calcium channel gamma-1 subunit [KO:K04866]
104378051  CACNG4; LOW QUALITY PROTEIN: voltage-dependent calcium channel gamma-4 subunit [KO:K04869]
104378061  [KO:K00411] [EC:7.1.1.8]
104378344  [KO:K09290]
104378536  [KO:K00414]
104378751  ATP1B1; sodium/potassium-transporting ATPase subunit beta-1 [KO:K01540]
104379136  CACNA2D1; voltage-dependent calcium channel subunit alpha-2/delta-1 [KO:K04858]
104379566  CACNA1D; voltage-dependent L-type calcium channel subunit alpha-1D [KO:K04851]
104380113  CACNA1S; voltage-dependent L-type calcium channel subunit alpha-1S [KO:K04857]
104380613  SLC9A6; sodium/hydrogen exchanger 6 [KO:K12041]
104381160  MYL4; myosin light chain 4 [KO:K12750]
104381580  [KO:K02263]
104382102  RYR2; ryanodine receptor 2 [KO:K04962]
104383163  [KO:K17751]
104383219  CACNB2; voltage-dependent L-type calcium channel subunit beta-2 [KO:K04863]
104383973  SLC9A7; sodium/hydrogen exchanger 7 [KO:K12041]
104384027  ATP1A1; sodium/potassium-transporting ATPase subunit alpha-1 [KO:K01539] [EC:7.2.2.13]
104384118  CACNG3; voltage-dependent calcium channel gamma-3 subunit [KO:K04868]
104384399  [KO:K02268]
104384603  ASPH; aspartyl/asparaginyl beta-hydroxylase [KO:K00476] [EC:1.14.11.16]
Compound
C00076  Calcium cation
C00080  H+
C00238  Potassium cation
C01330  Sodium cation
Reference
PMID:17988210
  Authors
Bers DM
  Title
Calcium cycling and signaling in cardiac myocytes.
  Journal
Annu Rev Physiol 70:23-49 (2008)
DOI:10.1146/annurev.physiol.70.113006.100455
Reference
PMID:11805843
  Authors
Bers DM
  Title
Cardiac excitation-contraction coupling.
  Journal
Nature 415:198-205 (2002)
DOI:10.1038/415198a
Reference
PMID:16799263
  Authors
Endoh M
  Title
Signal transduction and Ca2+ signaling in intact myocardium.
  Journal
J Pharmacol Sci 100:525-37 (2006)
DOI:10.1254/jphs.CPJ06009X
Reference
PMID:18981594
  Authors
Endoh M
  Title
Cardiac Ca2+ signaling and Ca2+ sensitizers.
  Journal
Circ J 72:1915-25 (2008)
DOI:10.1253/circj.CJ-08-0838
Reference
PMID:16552170
  Authors
Bers DM, Despa S
  Title
Cardiac myocytes Ca2+ and Na+ regulation in normal and failing hearts.
  Journal
J Pharmacol Sci 100:315-22 (2006)
DOI:10.1254/jphs.CPJ06001X
Reference
PMID:10747208
  Authors
Gordon AM, Homsher E, Regnier M
  Title
Regulation of contraction in striated muscle.
  Journal
Physiol Rev 80:853-924 (2000)
DOI:10.1152/physrev.2000.80.2.853
Reference
PMID:16701909
  Authors
Phrommintikul A, Chattipakorn N
  Title
Roles of cardiac ryanodine receptor in heart failure and sudden cardiac death.
  Journal
Int J Cardiol 112:142-52 (2006)
DOI:10.1016/j.ijcard.2005.11.106
Reference
PMID:16096350
  Authors
Lacinova L
  Title
Voltage-dependent calcium channels.
  Journal
Gen Physiol Biophys 24 Suppl 1:1-78 (2005)
Reference
PMID:12763850
  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
Ann N Y Acad Sci 986:354-9 (2003)
DOI:10.1111/j.1749-6632.2003.tb07214.x
Reference
PMID:11294886
  Authors
Berg JS, Powell BC, Cheney RE
  Title
A millennial myosin census.
  Journal
Mol Biol Cell 12:780-94 (2001)
DOI:10.1091/mbc.12.4.780
Reference
PMID:15736582
  Authors
Parmacek MS, Solaro RJ
  Title
Biology of the troponin complex in cardiac myocytes.
  Journal
Prog Cardiovasc Dis 47:159-76 (2004)
DOI:10.1016/j.pcad.2004.07.003
Reference
PMID:14659803
  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
Cardiovasc Res 60:580-8 (2003)
DOI:10.1016/j.cardiores.2003.09.011
Reference
PMID:19403607
  Authors
Pritchard TJ, Kranias EG
  Title
Junctin and the histidine-rich Ca2+ binding protein: potential roles in heart failure and arrhythmogenesis.
  Journal
J Physiol 587:3125-33 (2009)
DOI:10.1113/jphysiol.2009.172171
Reference
PMID:28596175
  Authors
Landstrom AP, Dobrev D, Wehrens XHT
  Title
Calcium Signaling and Cardiac Arrhythmias.
  Journal
Circ Res 120:1969-1993 (2017)
DOI:10.1161/CIRCRESAHA.117.310083
Related
pathway
teo04020  Calcium signaling pathway
KO pathway
ko04260   

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