[English] 日本語
Yorodumi
- PDB-2fxm: Structure of the human beta-myosin S2 fragment -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 2fxm
TitleStructure of the human beta-myosin S2 fragment
ComponentsMyosin heavy chain, cardiac muscle beta isoformMyosin
KeywordsCONTRACTILE PROTEIN / COILED COIL (DIMERIC / PARALLEL) / FAMILIAL HYPERTROPHIC CARDIOMYOPATHY / THICK FILAMENT
Function / homology
Function and homology information


regulation of slow-twitch skeletal muscle fiber contraction / regulation of the force of skeletal muscle contraction / muscle myosin complex / muscle filament sliding / regulation of the force of heart contraction / transition between fast and slow fiber / myosin filament / myosin II complex / adult heart development / cardiac muscle hypertrophy in response to stress ...regulation of slow-twitch skeletal muscle fiber contraction / regulation of the force of skeletal muscle contraction / muscle myosin complex / muscle filament sliding / regulation of the force of heart contraction / transition between fast and slow fiber / myosin filament / myosin II complex / adult heart development / cardiac muscle hypertrophy in response to stress / myosin complex / sarcomere organization / microfilament motor activity / ventricular cardiac muscle tissue morphogenesis / myofibril / skeletal muscle contraction / striated muscle contraction / ATP metabolic process / stress fiber / cardiac muscle contraction / regulation of heart rate / sarcomere / muscle contraction / Z disc / actin filament binding / calmodulin binding / ATP binding / cytoplasm
Similarity search - Function
Single alpha-helices involved in coiled-coils or other helix-helix interfaces - #340 / 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 ...Single alpha-helices involved in coiled-coils or other helix-helix interfaces - #340 / 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 / Single alpha-helices involved in coiled-coils or other helix-helix interfaces / Up-down Bundle / P-loop containing nucleoside triphosphate hydrolase / Mainly Alpha
Similarity search - Domain/homology
Biological speciesHomo sapiens (human)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MAD / Resolution: 2.7 Å
AuthorsBlankenfeldt, W. / Thoma, N.H. / Wray, J.S. / Gautel, M. / Schlichting, I.
Citation
Journal: Proc Natl Acad Sci U S A / Year: 2006
Title: Crystal structures of human cardiac beta-myosin II S2-Delta provide insight into the functional role of the S2 subfragment.
Authors: Wulf Blankenfeldt / Nicolas H Thomä / John S Wray / Mathias Gautel / Ilme Schlichting /
Abstract: Myosin II is the major component of the muscle thick filament. It consists of two N-terminal S1 subfragments ("heads") connected to a long dimeric coiled-coil rod. The rod is in itself twofold ...Myosin II is the major component of the muscle thick filament. It consists of two N-terminal S1 subfragments ("heads") connected to a long dimeric coiled-coil rod. The rod is in itself twofold symmetric, but in the filament, the two heads point away from the filament surface and are therefore not equivalent. This breaking of symmetry requires the initial section of the rod, subfragment 2 (S2), to be relatively flexible. S2 is an important functional element, involved in various mechanisms by which the activity of smooth and striated muscle is regulated. We have determined crystal structures of the 126 N-terminal residues of S2 from human cardiac beta-myosin II (S2-Delta), of both WT and the disease-associated E924K mutant. S2-Delta is a straight parallel dimeric coiled coil, but the N terminus of one chain is disordered in WT-S2-Delta due to crystal contacts, indicative of unstable local structure. Bulky noncanonical side chains pack into a/d positions of S2-Delta's N terminus, leading to defined local asymmetry and axial stagger, which could induce nonequivalence of the S1 subfragments. Additionally, S2 possesses a conserved charge distribution with three prominent rings of negative potential within S2-Delta, the first of which may provide a binding interface for the "blocked head" of smooth muscle myosin in the OFF state. The observation that many disease-associated mutations affect the second negatively charged ring further suggests that charge interactions play an important role in regulation of cardiac muscle activity through myosin-binding protein C.
#1: Journal: J.Mol.Biol. / Year: 1999
Title: Mutations in Beta-Myosin S2 that Cause Familial Hypertrophic Cardiomyopathy (Fhc) Abolish the Interaction with the Regulatory Domain of Myosin-Binding Protein-C
Authors: Gruen, M. / Gautel, M.
#2: Journal: Nature / Year: 2003
Title: Visualization of an Unstable Coiled Coil from the Scallop Myosin Rod
Authors: Li, Y. / Brown, J.H. / Reshetnikova, L. / Blazsek, A. / Farkas, L. / Nyitray, L. / Cohen, C.
History
DepositionFeb 6, 2006Deposition site: RCSB / Processing site: PDBJ
Revision 1.0Nov 21, 2006Provider: repository / Type: Initial release
Revision 1.1May 1, 2008Group: Version format compliance
Revision 1.2Jul 13, 2011Group: Version format compliance
Revision 1.3Oct 18, 2017Group: Advisory / Refinement description / Category: pdbx_unobs_or_zero_occ_atoms / software
Revision 1.4Mar 13, 2024Group: Advisory / Data collection ...Advisory / Data collection / Database references / Derived calculations
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_struct_conn_angle / pdbx_unobs_or_zero_occ_atoms / struct_conn / struct_ref_seq_dif / struct_site
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _pdbx_struct_conn_angle.ptnr1_auth_asym_id / _pdbx_struct_conn_angle.ptnr1_auth_comp_id / _pdbx_struct_conn_angle.ptnr1_auth_seq_id / _pdbx_struct_conn_angle.ptnr1_label_asym_id / _pdbx_struct_conn_angle.ptnr1_label_atom_id / _pdbx_struct_conn_angle.ptnr1_label_comp_id / _pdbx_struct_conn_angle.ptnr1_label_seq_id / _pdbx_struct_conn_angle.ptnr2_auth_asym_id / _pdbx_struct_conn_angle.ptnr2_auth_seq_id / _pdbx_struct_conn_angle.ptnr2_label_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_asym_id / _pdbx_struct_conn_angle.ptnr3_auth_comp_id / _pdbx_struct_conn_angle.ptnr3_auth_seq_id / _pdbx_struct_conn_angle.ptnr3_label_asym_id / _pdbx_struct_conn_angle.ptnr3_label_atom_id / _pdbx_struct_conn_angle.ptnr3_label_comp_id / _pdbx_struct_conn_angle.ptnr3_label_seq_id / _pdbx_struct_conn_angle.value / _struct_conn.pdbx_dist_value / _struct_conn.ptnr1_auth_asym_id / _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_asym_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_ref_seq_dif.details / _struct_site.pdbx_auth_asym_id / _struct_site.pdbx_auth_comp_id / _struct_site.pdbx_auth_seq_id

-
Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
A: Myosin heavy chain, cardiac muscle beta isoform
B: Myosin heavy chain, cardiac muscle beta isoform
hetero molecules


Theoretical massNumber of molelcules
Total (without water)30,6134
Polymers30,2122
Non-polymers4012
Water0
1


  • Idetical with deposited unit
  • defined by author&software
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area6600 Å2
ΔGint-128 kcal/mol
Surface area17450 Å2
MethodPISA
Unit cell
Length a, b, c (Å)40.290, 45.970, 373.700
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number20
Space group name H-MC2221

-
Components

#1: Protein Myosin heavy chain, cardiac muscle beta isoform / Myosin / BETA-MYOSIN / MyHC-beta


Mass: 15106.078 Da / Num. of mol.: 2 / Fragment: DELTA-S2 FRAGMENT (838-963)
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Tissue: HEART MUSCLE / Gene: HSBMHC / Plasmid: PET / Species (production host): Escherichia coli / Production host: Escherichia coli BL21 (bacteria) / Strain (production host): BL21 / References: UniProt: P12883
#2: Chemical ChemComp-HG / MERCURY (II) ION / Mercury (element)


Mass: 200.590 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Hg

-
Experimental details

-
Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

-
Sample preparation

CrystalDensity Matthews: 2.9 Å3/Da / Density % sol: 56.5 %
Crystal growTemperature: 296 K / Method: vapor diffusion, sitting drop / pH: 8.5
Details: PEG 3350, LITHIUM CITRATE, TRIS- HCL, pH 8.50, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 296K

-
Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ESRF / Beamline: ID29 / Wavelength: 1.0088, 0.82655
DetectorType: ADSC QUANTUM 4 / Detector: CCD / Date: May 8, 2002
RadiationMonochromator: SI(311) / Protocol: MAD / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelength
IDWavelength (Å)Relative weight
11.00881
20.826551
ReflectionResolution: 2.7→20 Å / Num. obs: 9756 / % possible obs: 96.7 % / Observed criterion σ(I): -3 / Redundancy: 5.7 % / Biso Wilson estimate: 53 Å2 / Rsym value: 0.104 / Net I/σ(I): 9.8
Reflection shellResolution: 2.7→2.8 Å / Redundancy: 3.4 % / Mean I/σ(I) obs: 3.1 / Rsym value: 0.326 / % possible all: 86.3

-
Processing

Software
NameVersionClassification
XDSdata scaling
XDSdata reduction
SHELXDphasing
SHARPphasing
CNS1refinement
RefinementMethod to determine structure: MAD / Resolution: 2.7→20 Å / Isotropic thermal model: ISOTROPIC / Cross valid method: THROUGHOUT / Stereochemistry target values: Engh & Huber
Details: Target sigma values for restrained B -factor refinement have been relaxed to 10 A*A to reflect the special shape of the molecule. Atoms that could not be located have been assigned a ...Details: Target sigma values for restrained B -factor refinement have been relaxed to 10 A*A to reflect the special shape of the molecule. Atoms that could not be located have been assigned a temperature factor of 500 A*A and occupancy value of 0 for better discernability.
RfactorNum. reflection% reflectionSelection details
Rfree0.283 496 5 %RANDOM
Rwork0.242 ---
obs0.242 9756 96.7 %-
Displacement parametersBiso mean: 77 Å2
Baniso -1Baniso -2Baniso -3
1--12.995 Å20 Å20 Å2
2---32.36 Å20 Å2
3---45.354 Å2
Refinement stepCycle: LAST / Resolution: 2.7→20 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms1953 0 2 0 1955
Refine LS restraints
Refine-IDTypeDev ideal
X-RAY DIFFRACTIONc_bond_d0.009
X-RAY DIFFRACTIONc_angle_deg1.18
LS refinement shellResolution: 2.7→2.87 Å
RfactorNum. reflection% reflection
Rfree0.393 37 -
Rwork0.353 --
obs--86.3 %

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
  • This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
  • The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.

Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

Read more