3NOW

UNC-45 from Drosophila melanogaster


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.99 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.202 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

X-ray Crystal Structure of the UCS Domain-Containing UNC-45 Myosin Chaperone from Drosophila melanogaster.

Lee, C.F.Hauenstein, A.V.Fleming, J.K.Gasper, W.C.Engelke, V.Sankaran, B.Bernstein, S.I.Huxford, T.

(2011) Structure 19: 397-408

  • DOI: 10.1016/j.str.2011.01.002
  • Primary Citation of Related Structures:  
    3NOW

  • PubMed Abstract: 
  • UCS proteins, such as UNC-45, influence muscle contraction and other myosin-dependent motile processes. We report the first X-ray crystal structure of a UCS domain-containing protein, the UNC-45 myosin chaperone from Drosophila melanogaster (DmUNC-45 ...

    UCS proteins, such as UNC-45, influence muscle contraction and other myosin-dependent motile processes. We report the first X-ray crystal structure of a UCS domain-containing protein, the UNC-45 myosin chaperone from Drosophila melanogaster (DmUNC-45). The structure reveals that the central and UCS domains form a contiguous arrangement of 17 consecutive helical layers that arrange themselves into five discrete armadillo repeat subdomains. Small-angle X-ray scattering data suggest that free DmUNC-45 adopts an elongated conformation and exhibits flexibility in solution. Protease sensitivity maps to a conserved loop that contacts the most carboxy-terminal UNC-45 armadillo repeat subdomain. Amino acid conservation across diverse UCS proteins maps to one face of this carboxy-terminal subdomain, and the majority of mutations that affect myosin-dependent cellular activities lie within or around this region. Our crystallographic, biophysical, and biochemical analyses suggest that DmUNC-45 function is afforded by its flexibility and by structural integrity of its UCS domain.


    Organizational Affiliation

    Department of Biology, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182-1030, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
UNC-45 protein, SD10334pA810Drosophila melanogasterMutation(s): 0 
Gene Names: CG2708Tom34unc-45
Find proteins for Q960B1 (Drosophila melanogaster)
Explore Q960B1 
Go to UniProtKB:  Q960B1
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.99 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.202 
  • Space Group: P 2 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 184.079α = 90
b = 184.079β = 90
c = 184.079γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
PHENIXmodel building
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-03-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance