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: 1.3 Å
  • R-Value Free: 0.209 

wwPDB Validation 3D Report Full Report


This is version 1.2 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.,Sect.D 64: 658-664

  • DOI: 10.1107/S0907444908008792

  • 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 rega ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Myosin-binding protein C, cardiac-type
A
108Homo sapiensMutation(s): 0 
Gene Names: MYBPC3
Find proteins for Q14896 (Homo sapiens)
Go to Gene View: MYBPC3
Go to UniProtKB:  Q14896
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.3 Å
  • R-Value Free: 0.209 
  • Space Group: I 41
Unit Cell:
Length (Å)Angle (°)
a = 48.848α = 90.00
b = 48.848β = 90.00
c = 95.132γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
HKL-2000data scaling
PDB_EXTRACTdata extraction
HKL-2000data reduction
SHELXL-97refinement
HKL-2000data collection
REFMACphasing
SHELXrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-07-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-10-25
    Type: Refinement description, Source and taxonomy