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(-) Description

Authors :  L. Spyracopoulos, M. X. Li, S. K. Sia, S. M. Gagne, M. Chandra, R. J. Solaro, B. D. Sykes
Date :  14 Jul 97  (Deposition) - 16 Sep 98  (Release) - 24 Feb 09  (Revision)
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (40x)
Keywords :  Muscle Protein, Calcium-Binding, Troponin C, Muscle Regulation (Keyword Search: [Gene Ontology, PubMed, Web (Google))
Reference :  L. Spyracopoulos, M. X. Li, S. K. Sia, S. M. Gagne, M. Chandra, R. J. Solaro, B. D. Sykes
Calcium-Induced Structural Transition In The Regulatory Domain Of Human Cardiac Troponin C.
Biochemistry V. 36 12138 1997
PubMed-ID: 9315850  |  Reference-DOI: 10.1021/BI971223D
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - TROPONIN C
    Cell LineBL21
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPET3D
    Expression System StrainBL21 (DE3) PLYSS
    Expression System Taxid562
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606

 Structural Features

(-) Chains, Units

NMR Structure (40x)

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 1SPY)

(-) Sites  (1, 1)

NMR Structure (1, 1)
1CABUNKNOWNASP A:65 , GLU A:66 , ASP A:67 , GLY A:68 , SER A:69 , GLY A:70 , THR A:71 , VAL A:72 , ASP A:73 , PHE A:74 , ASP A:75 , GLU A:76CA BINDING SITE II.

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1SPY)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1SPY)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (3, 3)

NMR Structure (3, 3)
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_063070A8VTNNC1_HUMANDisease (CMH13)267607125AA8V
2UniProtVAR_019776L29QTNNC1_HUMANDisease (CMH13)267607123AL29Q
3UniProtVAR_063071C84YTNNC1_HUMANDisease (CMH13)267607126AC84Y

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

(-) PROSITE Motifs  (2, 3)

NMR Structure (2, 3)
1EF_HAND_2PS50222 EF-hand calcium-binding domain profile.TNNC1_HUMAN33-51
2EF_HAND_1PS00018 EF-hand calcium-binding domain.TNNC1_HUMAN65-77

(-) Exons   (4, 4)

NMR Structure (4, 4)
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength

(-) Sequences/Alignments

NMR Structure
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it)
Chain A from PDB  Type:PROTEIN  Length:89
 aligned with TNNC1_HUMAN | P63316 from UniProtKB/Swiss-Prot  Length:161

    Alignment length:89
                                    10        20        30        40        50        60        70        80         
               SCOP domains d1spya_ A: Troponin C                                                                     SCOP domains
               CATH domains 1spyA00 A:1-89 EF-hand                                                                    CATH domains
               Pfam domains -------------------------------EF_hand_6-1spyA01 A:32-84                            ----- Pfam domains
         Sec.struct. author ....hhhhhhh..hhhhhhhhhhhhhh.......eee...hhhhhhhh.....hhhhhhhhhhh......eee..hhhhhhhhh..... Sec.struct. author
                 SAPs(SNPs) -------V--------------------Q------------------------------------------------------Y----- SAPs(SNPs)
                PROSITE (1) --------------------------------EF_HAND_2          EF_HAND_2  PDB: A:52-87             -- PROSITE (1)
                PROSITE (2) ----------------------------------------------------------------EF_HAND_1    ------------ PROSITE (2)
           Transcript 1 (1) Exon 1.1Exon 1.2b  ------------------------------------------------Exon 1.4b  PDB: A:68-8 Transcript 1 (1)
           Transcript 1 (2) ------------------Exon 1.3  PDB: A:19-68 UniProt: 19-68             --------------------- Transcript 1 (2)
                                    10        20        30        40        50        60        70        80         

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    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (1, 1)

NMR Structure

(-) CATH Domains  (1, 1)

NMR Structure

(-) Pfam Domains  (1, 1)

NMR Structure
Clan: EF_hand (270)

(-) Gene Ontology  (23, 23)

NMR Structure(hide GO term definitions)
Chain A   (TNNC1_HUMAN | P63316)
molecular function
    GO:0051015    actin filament binding    Interacting selectively and non-covalently with an actin filament, also known as F-actin, a helical filamentous polymer of globular G-actin subunits.
    GO:0005509    calcium ion binding    Interacting selectively and non-covalently with calcium ions (Ca2+).
    GO:0048306    calcium-dependent protein binding    Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules), in the presence of calcium.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0005515    protein binding    Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
    GO:0042803    protein homodimerization activity    Interacting selectively and non-covalently with an identical protein to form a homodimer.
    GO:0031013    troponin I binding    Interacting selectively and non-covalently with troponin I, the inhibitory subunit of the troponin complex.
    GO:0031014    troponin T binding    Interacting selectively and non-covalently with troponin T, the tropomyosin-binding subunit of the troponin complex.
biological process
    GO:0060048    cardiac muscle contraction    Muscle contraction of cardiac muscle tissue.
    GO:0002086    diaphragm contraction    A process in which force is generated within involuntary skeletal muscle tissue, resulting in a change in muscle geometry. This process occurs in the diaphragm. Force generation involves a chemo-mechanical energy conversion step that is carried out by the actin/myosin complex activity, which generates force through ATP hydrolysis. The diaphragm is a striated muscle that is necessary for the process of respiratory gaseous exchange.
    GO:0030049    muscle filament sliding    The sliding of actin thin filaments and myosin thick filaments past each other in muscle contraction. This involves a process of interaction of myosin located on a thick filament with actin located on a thin filament. During this process ATP is split and forces are generated.
    GO:0043462    regulation of ATPase activity    Any process that modulates the rate of ATP hydrolysis by an ATPase.
    GO:0006937    regulation of muscle contraction    Any process that modulates the frequency, rate or extent of muscle contraction.
    GO:0032972    regulation of muscle filament sliding speed    Any process that modulates the velocity of muscle filament sliding.
    GO:0010038    response to metal ion    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a metal ion stimulus.
    GO:0014883    transition between fast and slow fiber    The process of conversion of fast-contracting muscle fibers to a slower character. This may involve slowing of contractile rate, slow myosin gene induction, increase in oxidative metabolic properties, altered electrophysiology and altered innervation. This process also regulates skeletal muscle adapatation.
    GO:0055010    ventricular cardiac muscle tissue morphogenesis    The process in which the anatomical structures of cardiac ventricle muscle is generated and organized.
cellular component
    GO:0015629    actin cytoskeleton    The part of the cytoskeleton (the internal framework of a cell) composed of actin and associated proteins. Includes actin cytoskeleton-associated complexes.
    GO:0043292    contractile fiber    Fibers, composed of actin, myosin, and associated proteins, found in cells of smooth or striated muscle.
    GO:0005829    cytosol    The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
    GO:0005739    mitochondrion    A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
    GO:0005654    nucleoplasm    That part of the nuclear content other than the chromosomes or the nucleolus.
    GO:0005861    troponin complex    A complex of accessory proteins (typically troponin T, troponin I and troponin C) found associated with actin in muscle thin filaments; involved in calcium regulation of muscle contraction.


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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

        TNNC1_HUMAN | P633161ap4 1ih0 1j1d 1j1e 1lj6 1lxf 1mxl 1ozs 1wrk 1wrl 2jt0 2jt3 2jt8 2jtz 2jxl 2kdh 2kfx 2kgb 2krd 2l1r 2l98 2mkp 2mle 2mlf 2mzp 2n79 2n7l 3rv5 3sd6 3swb 4gje 4gjf 4gjg 4y99 5vln 5w88

(-) Related Entries Specified in the PDB File

(no "Related Entries Specified in the PDB File" available for 1SPY)