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(-) Description

Title :  STRUCTURE OF A RHODAMINE-LABELED N-DOMAIN TROPONIN C MUTANT (CA2+ SATURATED) IN COMPLEX WITH SKELETAL TROPONIN I 115-131
 
Authors :  P. Mercier, R. E. Ferguson, M. Irving, J. E. T. Corrie, D. R. Trentham, B. D. Sykes
Date :  18 Jan 03  (Deposition) - 29 Apr 03  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A,B  (21x)
Keywords :  Troponin C- Troponin I Complex, Bifunctional Rhodamine Labeled Toponin C, Structural Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  P. Mercier, R. E. Ferguson, M. Irving, J. E. T. Corrie, D. R. Trentham, B. D. Sykes
Nmr Structure Of A Bifunctional Rhodamine Labeled N-Domain Of Troponin C Complexed With The Regulatory "Switch" Peptide From Troponin I: Implications For In Situ Fluorescence Studies In Muscle Fibers
Biochemistry V. 42 4333 2003
PubMed-ID: 12693929  |  Reference-DOI: 10.1021/BI027041N
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - TROPONIN C
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PET3ASNTNC
    Expression System Strain: BL21(DE3)PLYSS
    Expression System Taxid: 562
    Expression System Vector Type: PET3A
    Fragment: TNC, RESIDUES 1-90
    Gene: TNNC2
    Mutation: YES
    Organism Common: CHICKEN
    Organism Scientific: GALLUS GALLUS
    Organism Taxid: 9031
    Synonym: TROPONIN C, SKELETAL MUSCLE
 
Molecule 2 - TROPONIN I
    Chains: B
    Engineered: YES
    Fragment: SWITCH PEPTIDE, RESIDUES 115-131
    Other Details: THIS SEQUENCE OCCURS NATURALLY IN ORYCTOLAGUS CUNICULUS (RABIT)
    Synonym: TROPONIN I, FAST SKELETAL MUSCLE
    Synthetic: YES

 Structural Features

(-) Chains, Units

  
NMR Structure (21x): 

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 2)

NMR Structure (1, 2)
No.NameCountTypeFull Name
1CA2Ligand/IonCALCIUM ION

(-) Sites  (2, 2)

NMR Structure (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREASP A:66 , ASP A:68 , SER A:70 , THR A:72 , GLU A:77BINDING SITE FOR RESIDUE CA A 132
2AC2SOFTWAREASP A:30 , ALA A:31 , ASP A:32 , ASP A:36 , GLU A:41BINDING SITE FOR RESIDUE CA A 133

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1NPQ)

(-) PROSITE Motifs  (2, 4)

NMR Structure (2, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1EF_HAND_2PS50222 EF-hand calcium-binding domain profile.TNNC2_CHICK18-53
54-89
94-129
130-163		  2A:17-52
A:53-88
-
-
2EF_HAND_1PS00018 EF-hand calcium-binding domain.TNNC2_CHICK31-43
67-79
107-119
143-155		  2A:30-42
A:66-78
-
-

(-) Exons   (3, 3)

NMR Structure (3, 3)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.1ENSGALT000000110601ENSGALE00000073521Un_random:20732110-20732258149TNNC2_CHICK1-50501A:1-4949
1.2ENSGALT000000110602ENSGALE00000073519Un_random:20732332-20732446115TNNC2_CHICK50-88391A:49-8739
1.3ENSGALT000000110603ENSGALE00000073522Un_random:20732522-20732658137TNNC2_CHICK88-134471A:87-904
1.4ENSGALT000000110604ENSGALE00000073520Un_random:20732749-20732979231TNNC2_CHICK134-143100--

(-) 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:90
 aligned with TNNC2_CHICK | P02588 from UniProtKB/Swiss-Prot  Length:163

    Alignment length:90
                                    11        21        31        41        51        61        71        81        91
          TNNC2_CHICK     2 ASMTDQQAEARAFLSEEMIAEFKAAFDMFDADGGGDISTKELGTVMRMLGQNPTKEELDAIIEEVDEDGSGTIDFEEFLVMMVRQMKEDA  91
               SCOP domains d1npqa_ A: Troponin C                                                                      SCOP domains
               CATH domains 1npqA00 A:1-90 EF-hand                                                                     CATH domains
           Pfam domains (1) -------------EF_hand_5-1npqA01 A:14-82                                            -------- Pfam domains (1)
           Pfam domains (2) --------------------------------EF_hand_6-1npqA02 A:33-85                            ----- Pfam domains (2)
         Sec.struct. author ....hhhhhhhhhhhhhhhhhhh.hhhhhh.......hhhhhhhhhhh.....hhhhhhhhhhhhh.........hhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------ SAPs(SNPs)
                PROSITE (1) ----------------EF_HAND_2  PDB: A:17-52             EF_HAND_2  PDB: A:53-88             -- PROSITE (1)
                PROSITE (2) -----------------------------EF_HAND_1    -----------------------EF_HAND_1    ------------ PROSITE (2)
           Transcript 1 (1) Exon 1.1  PDB: A:1-49 UniProt: 1-50 [INCOMPLETE] -------------------------------------1.3  Transcript 1 (1)
           Transcript 1 (2) ------------------------------------------------Exon 1.2  PDB: A:49-87 UniProt: 50-88  --- Transcript 1 (2)
                 1npq A   1 ASMTDQQAEARAFLSEEMIAEFKAAFDMFDADGGGDISTKELGTVMRMLGQNPTKCELDAIICEVDEDGSGTIDFEEFLVMMVRQMKEDA  90
                                    10        20        30        40        50        60        70        80        90


Chain B from PDB  Type:PROTEIN  Length:17
 aligned with TNNI2_RABIT | P02643 from UniProtKB/Swiss-Prot  Length:182

    Alignment length:17
                                   125       
          TNNI2_RABIT   116 RMSADAMLKALLGSKHK 132
               SCOP domains ----------------- SCOP domains
               CATH domains ----------------- CATH domains
               Pfam domains Troponin-1npqB01  Pfam domains
         Sec.struct. author ...hhhhhhhhh..... Sec.struct. author
                 SAPs(SNPs) ----------------- SAPs(SNPs)
                    PROSITE ----------------- PROSITE
                 Transcript ----------------- Transcript
                 1npq B 115 RMSADAMLRALLGSKHK 131
                                   124
   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → 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
(-)
Class: All alpha proteins (14657)

(-) CATH Domains  (1, 1)

NMR Structure
(-)
Class: Mainly Alpha (13335)

(-) Pfam Domains  (3, 3)

NMR Structure
(-)
Clan: EF_hand (270)
(-)
Clan: no clan defined [family: Troponin] (10)

(-) Gene Ontology  (6, 9)

NMR Structure(hide GO term definitions)
Chain A   (TNNC2_CHICK | P02588)
molecular function
    GO:0003779    actin binding    Interacting selectively and non-covalently with monomeric or multimeric forms of actin, including actin filaments.
    GO:0005509    calcium ion binding    Interacting selectively and non-covalently with calcium ions (Ca2+).
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
biological process
    GO:0003009    skeletal muscle contraction    A process in which force is generated within skeletal muscle tissue, resulting in a change in muscle geometry. 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. In the skeletal muscle, the muscle contraction takes advantage of an ordered sarcomeric structure and in most cases it is under voluntary control.
cellular component
    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.

Chain B   (TNNI2_RABIT | P02643)
molecular function
    GO:0003779    actin binding    Interacting selectively and non-covalently with monomeric or multimeric forms of actin, including actin filaments.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0031014    troponin T binding    Interacting selectively and non-covalently with troponin T, the tropomyosin-binding subunit of the troponin complex.
cellular component
    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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  1npq
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  TNNI2_RABIT | P02643
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 Related Entries

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

UniProtKB/Swiss-Prot
        TNNC2_CHICK | P02588: 1avs 1blq 1cta 1ctd 1ew7 1jc2 1ncx 1ncy 1ncz 1pon 1skt 1smg 1tnp 1tnq 1tnw 1tnx 1top 1ytz 1yv0 1zac 2w49 2w4u 4tnc
        TNNI2_RABIT | P02643: 1a2x 1ew7

(-) Related Entries Specified in the PDB File

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