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- PDB-2jt8: Solution structure of the F153-to-5-flurotryptophan mutant of hum... -

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Basic information

Entry
Database: PDB / ID: 2jt8
TitleSolution structure of the F153-to-5-flurotryptophan mutant of human cardiac troponin C
ComponentsTroponin C, slow skeletal and cardiac muscles
KeywordsSTRUCTURAL PROTEIN / EF-hand protein / Calcium-bind protein / Phe-to-Trp mutation / Acetylation / Muscle protein / Polymorphism
Function / homology
Function and homology information


diaphragm contraction / regulation of ATP-dependent activity / regulation of muscle filament sliding speed / troponin T binding / cardiac Troponin complex / troponin complex / regulation of muscle contraction / transition between fast and slow fiber / Striated Muscle Contraction / muscle filament sliding ...diaphragm contraction / regulation of ATP-dependent activity / regulation of muscle filament sliding speed / troponin T binding / cardiac Troponin complex / troponin complex / regulation of muscle contraction / transition between fast and slow fiber / Striated Muscle Contraction / muscle filament sliding / response to metal ion / ventricular cardiac muscle tissue morphogenesis / troponin I binding / skeletal muscle contraction / cardiac muscle contraction / sarcomere / calcium-dependent protein binding / actin filament binding / calcium ion binding / protein homodimerization activity / cytosol
Similarity search - Function
EF-hand domain pair / EF-hand / : / Recoverin; domain 1 / EF-hand domain pair / EF-hand, calcium binding motif / EF-Hand 1, calcium-binding site / EF-hand calcium-binding domain. / EF-hand calcium-binding domain profile. / EF-hand domain ...EF-hand domain pair / EF-hand / : / Recoverin; domain 1 / EF-hand domain pair / EF-hand, calcium binding motif / EF-Hand 1, calcium-binding site / EF-hand calcium-binding domain. / EF-hand calcium-binding domain profile. / EF-hand domain / EF-hand domain pair / Orthogonal Bundle / Mainly Alpha
Similarity search - Domain/homology
Troponin C, slow skeletal and cardiac muscles
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodSOLUTION NMR / simulated annealing
AuthorsWang, X. / Mercier, P. / Letourneau, P. / Sykes, B.D.
CitationJournal: Protein Sci. / Year: 2005
Title: Effects of Phe-to-Trp mutation and fluorotryptophan incorporation on the solution structure of cardiac troponin C, and analysis of its suitability as a potential probe for in situ NMR studies
Authors: Wang, X. / Mercier, P. / Letourneau, P. / Sykes, B.
History
DepositionJul 20, 2007Deposition site: BMRB / Processing site: RCSB
Revision 1.0Aug 7, 2007Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 2.0Feb 19, 2020Group: Atomic model / Database references ...Atomic model / Database references / Derived calculations / Other
Category: atom_site / database_2 ...atom_site / database_2 / pdbx_database_status / pdbx_struct_assembly / pdbx_struct_oper_list / struct_conn
Item: _atom_site.auth_atom_id / _atom_site.label_atom_id ..._atom_site.auth_atom_id / _atom_site.label_atom_id / _pdbx_database_status.status_code_cs / _struct_conn.pdbx_leaving_atom_flag
Revision 2.1Oct 20, 2021Group: Database references / Category: database_2 / struct_ref_seq_dif
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_ref_seq_dif.details
Revision 2.2Jun 14, 2023Group: Other / Category: pdbx_database_status / Item: _pdbx_database_status.status_code_nmr_data

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Troponin C, slow skeletal and cardiac muscles


Theoretical massNumber of molelcules
Total (without water)18,4441
Polymers18,4441
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_5551
NMR ensembles
DataCriteria
Number of conformers (submitted / calculated)10 / 50structures with the lowest energy
RepresentativeModel #1lowest energy

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Components

#1: Protein Troponin C, slow skeletal and cardiac muscles / TN-C


Mass: 18444.379 Da / Num. of mol.: 1 / Mutation: F153(FTR), C35S, C84S
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: TNNC1, TNNC / Production host: Escherichia coli (E. coli) / Strain (production host): BL21 / Variant (production host): (DE3)pLysS / References: UniProt: P63316

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Experimental details

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Experiment

ExperimentMethod: SOLUTION NMR
NMR experiment
Conditions-IDExperiment-IDSolution-IDType
1112D 1H-15N HSQC
1213D 1H-15N NOESY
1313D 1H-13C NOESY
1413D HN(CA)CB
1513D CBCA(CO)NH
1613D (H)CCH-TOCSY

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Sample preparation

DetailsContents: 1.0 mM F153(FTR), 10 mM Calcium, 100 mM potassium chloride, 90% H2O/10% D2O
Solvent system: 90% H2O/10% D2O
Sample
Conc. (mg/ml)ComponentSolution-ID
1.0 mMF153(FTR)1
10 mMCalcium1
100 mMpotassium chloride1
Sample conditionsIonic strength: 0.1 / pH: 6.7 / Pressure: ambient / Temperature: 303 K

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NMR measurement

NMR spectrometerType: Varian INOVA / Manufacturer: Varian / Model: INOVA / Field strength: 600 MHz

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Processing

NMR software
NameDeveloperClassification
NMRPipeDelaglio, Grzesiek, Vuister, Zhu, Pfeifer and Baxprocessing
NMRViewJohnson, One Moon Scientificdata analysis
CYANAGuntert, Mumenthaler and Wuthrichstructure solution
CYANAGuntert, Mumenthaler and Wuthrichrefinement
RefinementMethod: simulated annealing / Software ordinal: 1
NMR representativeSelection criteria: lowest energy
NMR ensembleConformer selection criteria: structures with the lowest energy
Conformers calculated total number: 50 / Conformers submitted total number: 10

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