3CX2

Crystal structure of the C1 domain of cardiac isoform of myosin binding protein-C at 1.3A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.30 Å
  • R-Value Free: 0.209 
  • R-Value Observed: 0.164 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

An investigation into the protonation states of the C1 domain of cardiac myosin-binding protein C

Fisher, S.J.Helliwell, J.R.Khurshid, S.Govada, L.Redwood, C.Squire, J.M.Chayen, N.E.

(2008) Acta Crystallogr D Biol Crystallogr 64: 658-664

  • DOI: https://doi.org/10.1107/S0907444908008792
  • Primary Citation of Related Structures:  
    3CX2

  • PubMed Abstract: 

    Myosin-binding protein C (MyBP-C) is a myofibril-associated protein found in cardiac and skeletal muscle. The cardiac isoform (cMyBP-C) is subject to reversible phosphorylation and the surface-charge state of the protein is of keen interest with regard to understanding the inter-protein interactions that are implicated in its function. Diffraction data from the C1 domain of cMyBP-C were extended to 1.30 A resolution, where the of the diffraction data crosses 2.0, using intense synchrotron radiation. The protonation-state determinations were not above 2sigma (the best was 1.81sigma) and therefore an extrapolation is given, based on 100% data completeness and the average DPI, that a 3sigma determination could be possible if X-ray data could be measured to 1.02 A resolution. This might be possible via improved crystallization or multiple sample evaluation, e.g. using robotics or a yet more intense/collimated X-ray beam or combinations thereof. An alternative would be neutron protein crystallography at 2 A resolution, where it is estimated that for the unit-cell volume of the cMyBP-C C1 domain crystal a crystal volume of 0.10 mm3 would be needed with fully deuterated protein on LADI III. These efforts would optimally be combined in a joint X-ray and neutron model refinement.


  • Organizational Affiliation

    School of Chemistry, Brunswick Street, The University of Manchester, Manchester M13 9PL, England.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Myosin-binding protein C, cardiac-type108Homo sapiensMutation(s): 0 
Gene Names: MYBPC3
UniProt & NIH Common Fund Data Resources
Find proteins for Q14896 (Homo sapiens)
Explore Q14896 
Go to UniProtKB:  Q14896
PHAROS:  Q14896
GTEx:  ENSG00000134571 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ14896
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.30 Å
  • R-Value Free: 0.209 
  • R-Value Observed: 0.164 
  • Space Group: I 41
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.848α = 90
b = 48.848β = 90
c = 95.132γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SHELXrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling
REFMACphasing
SHELXL-97refinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-07-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-10-25
    Changes: Refinement description, Source and taxonomy
  • Version 1.3: 2023-08-30
    Changes: Data collection, Database references, Refinement description