1W7J

Crystal Structure Of Myosin V Motor With Essential Light Chain + ADP-BeFx - Near Rigor

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.196 

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Literature

Three Myosin V Structures Delineate Essential Features of Chemo-Mechanical Transduction

Coureux, P.-D., Sweeney, H.L., Houdusse, A.

(2004) EMBO J 23: 4527

  • DOI: 10.1038/sj.emboj.7600458
  • Primary Citation of Related Structures:  
    1W7I, 1W7J, 1W8J

  • PubMed Abstract: 

    • The molecular motor, myosin, undergoes conformational changes in order to convert chemical energy into force production. Based on kinetic and structural considerations, we assert that three crystal forms of the myosin V motor delineate the conformational changes that myosin motors undergo upon detachment from actin ...

    The molecular motor, myosin, undergoes conformational changes in order to convert chemical energy into force production. Based on kinetic and structural considerations, we assert that three crystal forms of the myosin V motor delineate the conformational changes that myosin motors undergo upon detachment from actin. First, a motor domain structure demonstrates that nucleotide-free myosin V adopts a specific state (rigor-like) that is not influenced by crystal packing. A second structure reveals an actomyosin state that favors rapid release of ADP, and differs from the rigor-like state by a P-loop rearrangement. Comparison of these structures with a third structure, a 2.0 angstroms resolution structure of the motor bound to an ATP analog, illuminates the structural features that provide communication between the actin interface and nucleotide-binding site. Paramount among these is a region we name the transducer, which is composed of the seven-stranded beta-sheet and associated loops and linkers. Reminiscent of the beta-sheet distortion of the F1-ATPase, sequential distortion of this transducer region likely controls sequential release of products from the nucleotide pocket during force generation.

    Organizational Affiliation: 

    Structural Motility, Institut Curie CNRS, UMR144, Paris, France.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MYOSIN VAA795Gallus gallusMutation(s): 0 
Gene Names: MYO5A
UniProt
Find proteins for Q02440 (Gallus gallus)
Explore Q02440 
Go to UniProtKB:  Q02440
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ02440
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
MYOSIN LIGHT CHAIN 1B151Homo sapiensMutation(s): 0 
Gene Names: MYL6B, MLC1SA
UniProt & NIH Common Fund Data Resources
Find proteins for P14649 (Homo sapiens)
Explore P14649 
Go to UniProtKB:  P14649
PHAROS:  P14649
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP14649
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP
Download Ideal Coordinates CCD File 
D [auth A]ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N		 Ligand Interaction
BEF
Query on BEF
Download Ideal Coordinates CCD File 
E [auth A]BERYLLIUM TRIFLUORIDE ION
Be F3
OGIAHMCCNXDTIE-UHFFFAOYSA-K		 Ligand Interaction
MG
Query on MG
Download Ideal Coordinates CCD File 
C [auth A]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.196 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 169.684α = 90
b = 95.988β = 96.11
c = 84.306γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-02-22
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance