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6KLT

Troponin of cardiac thin filament in low-calcium state

Functional Information from GO Data
ChainGOidnamespacecontents
A0002086biological_processdiaphragm contraction
A0003009biological_processskeletal muscle contraction
A0005509molecular_functioncalcium ion binding
A0005861cellular_componenttroponin complex
A0006937biological_processregulation of muscle contraction
A0008092molecular_functioncytoskeletal protein binding
A0010038biological_processresponse to metal ion
A0014883biological_processtransition between fast and slow fiber
A0030017cellular_componentsarcomere
A0030049biological_processmuscle filament sliding
A0031013molecular_functiontroponin I binding
A0031014molecular_functiontroponin T binding
A0032780biological_processnegative regulation of ATP-dependent activity
A0032972biological_processregulation of muscle filament sliding speed
A0042803molecular_functionprotein homodimerization activity
A0043292cellular_componentcontractile muscle fiber
A0046872molecular_functionmetal ion binding
A0048306molecular_functioncalcium-dependent protein binding
A0051015molecular_functionactin filament binding
A0055010biological_processventricular cardiac muscle tissue morphogenesis
A0060048biological_processcardiac muscle contraction
A0086003biological_processcardiac muscle cell contraction
A1990584cellular_componentcardiac Troponin complex
B0005861cellular_componenttroponin complex
B0006937biological_processregulation of muscle contraction
C0005861cellular_componenttroponin complex
Functional Information from PDB Data
site_idAC1
Number of Residues5
Detailsbinding site for residue CA A 201
ChainResidue
AASP142
AASN144
AASP146
AARG148
AGLU153

site_idAC2
Number of Residues5
Detailsbinding site for residue CA A 202
ChainResidue
AGLU117
AASP106
AASN108
AASP110
ATYR112

Functional Information from PROSITE/UniProt
site_idPS00018
Number of Residues13
DetailsEF_HAND_1 EF-hand calcium-binding domain. DEDGSGTVDfdEF
ChainResidueDetails
AASP67-PHE79
AASP106-LEU118
AASP142-PHE154

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues15
DetailsBinding site: {"evidences":[{"source":"PROSITE-ProRule","id":"PRU00448","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues1
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"21183079","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues1
DetailsModified residue: {"description":"Phosphothreonine; by PKC/PRKCA and RAF1","evidences":[{"source":"PubMed","id":"12832403","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues2
DetailsSite: {"description":"Involved in TNI-TNT interactions"}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues2
DetailsModified residue: {"description":"Phosphothreonine; by STK4/MST1","evidences":[{"source":"UniProtKB","id":"P19429","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues1
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"source":"UniProtKB","id":"P19429","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues1
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"UniProtKB","id":"P19429","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

246905

PDB entries from 2025-12-31

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