5N69

Cardiac muscle myosin S1 fragment in the pre-powerstroke state co-crystallized with the activator Omecamtiv Mecarbil


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.180 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Mechanistic and structural basis for activation of cardiac myosin force production by omecamtiv mecarbil.

Planelles-Herrero, V.J.Hartman, J.J.Robert-Paganin, J.Malik, F.I.Houdusse, A.

(2017) Nat Commun 8: 190-190

  • DOI: 10.1038/s41467-017-00176-5
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Omecamtiv mecarbil is a selective, small-molecule activator of cardiac myosin that is being developed as a potential treatment for heart failure with reduced ejection fraction. Here we determine the crystal structure of cardiac myosin in the pre-powe ...

    Omecamtiv mecarbil is a selective, small-molecule activator of cardiac myosin that is being developed as a potential treatment for heart failure with reduced ejection fraction. Here we determine the crystal structure of cardiac myosin in the pre-powerstroke state, the most relevant state suggested by kinetic studies, both with (2.45 Å) and without (3.10 Å) omecamtiv mecarbil bound. Omecamtiv mecarbil does not change the motor mechanism nor does it influence myosin structure. Instead, omecamtiv mecarbil binds to an allosteric site that stabilizes the lever arm in a primed position resulting in accumulation of cardiac myosin in the primed state prior to onset of cardiac contraction, thus increasing the number of heads that can bind to the actin filament and undergo a powerstroke once the cardiac cycle starts. The mechanism of action of omecamtiv mecarbil also provides insights into uncovering how force is generated by molecular motors.Omecamtiv mecarbil (OM) is a cardiac myosin activator that is currently in clinical trials for heart failure treatment. Here, the authors give insights into its mode of action and present the crystal structure of OM bound to bovine cardiac myosin, which shows that OM stabilizes the pre-powerstroke state of myosin.


    Organizational Affiliation

    Structural Motility, Institut Curie, PSL Research University, CNRS, UMR 144, F-75005, Paris, France.,Research and Development, Cytokinetics, Inc., South San Francisco, CA, 94080, USA.,Sorbonne Universités, UPMC Univ Paris06, Sorbonne Universités, IFD, 4 Place Jussieu, 75252, Paris, cedex 05, France.,Structural Motility, Institut Curie, PSL Research University, CNRS, UMR 144, F-75005, Paris, France. anne.houdusse@curie.fr.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Myosin-7
A, B
828Bos taurusMutation(s): 0 
Gene Names: MYH7
Find proteins for Q9BE39 (Bos taurus)
Go to Gene View: MYH7
Go to UniProtKB:  Q9BE39
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Myosin light chain 3
G, H
199Bos taurusMutation(s): 0 
Gene Names: MYL3
Find proteins for P85100 (Bos taurus)
Go to Gene View: MYL3
Go to UniProtKB:  P85100
Small Molecules
Ligands 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

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Download CCD File 
A, B
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
 Ligand Interaction
GOL
Query on GOL

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Download CCD File 
A, B, H
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

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Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
2OW
Query on 2OW

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Download CCD File 
A, B
methyl 4-(2-fluoro-3-{[(6-methylpyridin-3-yl)carbamoyl]amino}benzyl)piperazine-1-carboxylate
omecamtiv mercarbil
C20 H24 F N5 O3
RFUBTTPMWSKEIW-UHFFFAOYSA-N
 Ligand Interaction
TCE
Query on TCE

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Download CCD File 
B
3,3',3''-phosphanetriyltripropanoic acid
3-[bis(2-carboxyethyl)phosphanyl]propanoic acid
C9 H15 O6 P
PZBFGYYEXUXCOF-UHFFFAOYSA-N
 Ligand Interaction
VO4
Query on VO4

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Download CCD File 
A, B
VANADATE ION
O4 V
LSGOVYNHVSXFFJ-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
M3L
Query on M3L
A, B
L-PEPTIDE LINKINGC9 H21 N2 O2LYS
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
2OWKd: 290 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.45 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.180 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 98.320α = 90.00
b = 122.450β = 90.00
c = 187.430γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
XDSdata scaling
BUSTERrefinement
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
AFMFrance18423
FRMFranceDBI20141231319
French National Research AgencyFrance13-BSV8-0019-01
AFMFrance17235
Labex CelTisPhyBioFrance11-LBX-0038
IDEX PSLFranceANR-10-IDEX-0001-02 PSL

Revision History 

  • Version 1.0: 2017-08-16
    Type: Initial release
  • Version 1.1: 2017-12-06
    Type: Database references