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- PDB-2os8: Rigor-like structures of muscle myosins reveal key mechanical ele... -

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Basic information

Entry
Database: PDB / ID: 2os8
TitleRigor-like structures of muscle myosins reveal key mechanical elements in the transduction pathways of this allosteric motor
Components
  • Myosin essential light chain
  • Myosin heavy chainMyosin
  • Myosin regulatory light chain
KeywordsCONTRACTILE PROTEIN / myosin S1 / rigor-like / motor / mechanical elements
Function / homology
Function and homology information


myosin complex / myofibril / cytoskeletal motor activity / actin filament binding / calcium ion binding / ATP binding
Similarity search - Function
EF-hand domain / DNA repair protein XRCC4-like, C-terminal / Myosin tail / Myosin tail / Myosin N-terminal SH3-like domain / Myosin S1 fragment, N-terminal / Myosin, N-terminal, SH3-like / Myosin N-terminal SH3-like domain profile. / Short calmodulin-binding motif containing conserved Ile and Gln residues. / Myosin head, motor domain ...EF-hand domain / DNA repair protein XRCC4-like, C-terminal / Myosin tail / Myosin tail / Myosin N-terminal SH3-like domain / Myosin S1 fragment, N-terminal / Myosin, N-terminal, SH3-like / Myosin N-terminal SH3-like domain profile. / Short calmodulin-binding motif containing conserved Ile and Gln residues. / Myosin head, motor domain / Myosin head (motor domain) / Myosin motor domain profile. / Myosin. Large ATPases. / IQ motif profile. / IQ motif, EF-hand binding site / Kinesin motor domain superfamily / 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 / P-loop containing nucleoside triphosphate hydrolase / Orthogonal Bundle / Mainly Alpha
Similarity search - Domain/homology
Myosin essential light chain / Myosin regulatory light chain / Myosin heavy chain
Similarity search - Component
Biological speciesPlacopecten magellanicus (sea scallop)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 3.27 Å
AuthorsYang, Y. / Gourinath, S. / Cohen, C. / Brown, J.H.
CitationJournal: Structure / Year: 2007
Title: Rigor-like Structures from Muscle Myosins Reveal Key Mechanical Elements in the Transduction Pathways of This Allosteric Motor.
Authors: Yang, Y. / Gourinath, S. / Kovacs, M. / Nyitray, L. / Reutzel, R. / Himmel, D.M. / O'neall-Hennessey, E. / Reshetnikova, L. / Szent-Gyorgyi, A.G. / Brown, J.H. / Cohen, C.
History
DepositionFeb 5, 2007Deposition site: RCSB / Processing site: RCSB
Revision 1.0May 29, 2007Provider: repository / Type: Initial release
Revision 1.1May 1, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Aug 30, 2023Group: Data collection / Database references ...Data collection / Database references / Derived calculations / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model / struct_conn / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct_conn.ptnr1_auth_comp_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr1_label_atom_id / _struct_conn.ptnr1_label_comp_id / _struct_conn.ptnr1_label_seq_id / _struct_conn.ptnr2_auth_comp_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id / _struct_conn.ptnr2_label_atom_id / _struct_conn.ptnr2_label_comp_id / _struct_conn.ptnr2_label_seq_id / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Myosin heavy chain
B: Myosin regulatory light chain
C: Myosin essential light chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)131,7855
Polymers131,7203
Non-polymers642
Water0
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area8170 Å2
ΔGint-75 kcal/mol
Surface area53870 Å2
MethodPISA
Unit cell
Length a, b, c (Å)85.567, 50.359, 161.621
Angle α, β, γ (deg.)90.000, 98.720, 90.000
Int Tables number4
Space group name H-MP1211

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Components

#1: Protein Myosin heavy chain / Myosin


Mass: 96139.289 Da / Num. of mol.: 1 / Fragment: Myosin heavy chain / Source method: isolated from a natural source / Source: (natural) Placopecten magellanicus (sea scallop) / References: UniProt: Q26080
#2: Protein Myosin regulatory light chain


Mass: 17769.146 Da / Num. of mol.: 1 / Fragment: Myosin RLC / Source method: isolated from a natural source / Source: (natural) Placopecten magellanicus (sea scallop) / References: UniProt: Q26068
#3: Protein Myosin essential light chain


Mass: 17811.805 Da / Num. of mol.: 1 / Fragment: Myosin ELC / Source method: isolated from a natural source / Source: (natural) Placopecten magellanicus (sea scallop) / References: UniProt: Q26066
#4: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg
#5: Chemical ChemComp-CA / CALCIUM ION


Mass: 40.078 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Ca

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 2

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Sample preparation

CrystalDensity Matthews: 2.61 Å3/Da / Density % sol: 52.91 %
Crystal growTemperature: 277 K / Method: vapor diffusion, hanging drop / pH: 7.5
Details: CaCl2, PEG , pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: CHESS / Beamline: A1 / Wavelength: 0.98 Å
DetectorType: ADSC QUANTUM 4 / Detector: CCD
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.98 Å / Relative weight: 1
ReflectionResolution: 3.25→50 Å / Num. all: 16888 / Num. obs: 16888 / % possible obs: 79.6 % / Observed criterion σ(I): -3 / Redundancy: 3.5 % / Biso Wilson estimate: 66 Å2 / Rsym value: 0.085 / Net I/σ(I): 7.2
Reflection shellResolution: 3.25→3.37 Å / Redundancy: 2.5 % / Mean I/σ(I) obs: 1.5 / Num. unique all: 1371 / Rsym value: 0.451 / % possible all: 64.7

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Processing

Software
NameVersionClassificationNB
CNS1.1refinement
PDB_EXTRACT2data extraction
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling
AMoREphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 1SR6

1sr6


Resolution: 3.27→48.03 Å / Rfactor Rfree error: 0.009 / Data cutoff high absF: 125059.531 / Data cutoff low absF: 0 / Isotropic thermal model: RESTRAINED / Cross valid method: THROUGHOUT / σ(F): 0 / Stereochemistry target values: Engh & Huber
RfactorNum. reflection% reflectionSelection details
Rfree0.314 1114 6.9 %RANDOM
Rwork0.281 ---
obs-16224 75.3 %-
Solvent computationSolvent model: FLAT MODEL / Bsol: 117.409 Å2 / ksol: 0.261 e/Å3
Displacement parametersBiso mean: 102.2 Å2
Baniso -1Baniso -2Baniso -3
1--0.92 Å20 Å25.21 Å2
2---22.21 Å20 Å2
3---23.14 Å2
Refine analyze
FreeObs
Luzzati coordinate error0.55 Å0.48 Å
Luzzati d res low-5 Å
Luzzati sigma a0.64 Å0.75 Å
Refinement stepCycle: LAST / Resolution: 3.27→48.03 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms8663 0 2 0 8665
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.01
X-RAY DIFFRACTIONc_angle_deg1.7
X-RAY DIFFRACTIONc_dihedral_angle_d23.4
X-RAY DIFFRACTIONc_improper_angle_d1.07
X-RAY DIFFRACTIONc_mcbond_it
X-RAY DIFFRACTIONc_mcangle_it
X-RAY DIFFRACTIONc_scbond_it
X-RAY DIFFRACTIONc_scangle_it
LS refinement shellResolution: 3.25→3.45 Å / Rfactor Rfree error: 0.033 / Total num. of bins used: 6
RfactorNum. reflection% reflection
Rfree0.378 133 7.8 %
Rwork0.362 1571 -
obs-1704 46.8 %
Xplor file
Refine-IDSerial noParam fileTopol file
X-RAY DIFFRACTION1protein_rep.paramprotein.top
X-RAY DIFFRACTION2ion.paramion.top

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