2PG1

Structural analysis of a cytoplasmic dynein Light Chain-Intermediate Chain complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.208 

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This is version 1.2 of the entry. See complete history


Literature

Structural and thermodynamic characterization of a cytoplasmic dynein light chain-intermediate chain complex

Williams, J.C.Roulhac, P.L.Roy, A.G.Vallee, R.B.Fitzgerald, M.C.Hendrickson, W.A.

(2007) Proc Natl Acad Sci U S A 104: 10028-10033

  • DOI: 10.1073/pnas.0703614104
  • Primary Citation of Related Structures:  
    2PG1

  • PubMed Abstract: 
  • Cytoplasmic dynein is a microtubule-based motor protein complex that plays important roles in a wide range of fundamental cellular processes, including vesicular transport, mitosis, and cell migration. A single major form of cytoplasmic dynein associates with membranous organelles, mitotic kinetochores, the mitotic and migratory cell cortex, centrosomes, and mRNA complexes ...

    Cytoplasmic dynein is a microtubule-based motor protein complex that plays important roles in a wide range of fundamental cellular processes, including vesicular transport, mitosis, and cell migration. A single major form of cytoplasmic dynein associates with membranous organelles, mitotic kinetochores, the mitotic and migratory cell cortex, centrosomes, and mRNA complexes. The ability of cytoplasmic dynein to recognize such diverse forms of cargo is thought to be associated with its several accessory subunits, which reside at the base of the molecule. The dynein light chains (LCs) LC8 and TcTex1 form a subcomplex with dynein intermediate chains, and they also interact with numerous protein and ribonucleoprotein partners. This observation has led to the hypothesis that these subunits serve to tether cargo to the dynein motor. Here, we present the structure and a thermodynamic analysis of a complex of LC8 and TcTex1 associated with their intermediate chain scaffold. The intermediate chains effectively block the major putative cargo binding sites within the light chains. These data suggest that, in the dynein complex, the LCs do not bind cargo, in apparent disagreement with a role for LCs in dynein cargo binding interactions.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Thomas Jefferson University, Philadelphia, PA 19107, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Dynein light chain 1, cytoplasmicA, B, C, D91Drosophila melanogasterMutation(s): 0 
Gene Names: ctpCdlc1ddlc1CG6998
UniProt
Find proteins for Q24117 (Drosophila melanogaster)
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Go to UniProtKB:  Q24117
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Dynein light chain Tctex-typeE, F, G, H111Drosophila melanogasterMutation(s): 3 
Gene Names: Dlc90FTctexCG12363
UniProt
Find proteins for Q94524 (Drosophila melanogaster)
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Go to UniProtKB:  Q94524
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Cytoplasmic dynein 1 intermediate chain 2I, J, K, L33Rattus norvegicusMutation(s): 0 
Gene Names: Dync1i2Dnci2Dncic2
UniProt
Find proteins for Q62871 (Rattus norvegicus)
Explore Q62871 
Go to UniProtKB:  Q62871
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
E, F, G, HL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.208 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 116.969α = 90
b = 119.87β = 90
c = 211.702γ = 90
Software Package:
Software NamePurpose
SOLVEphasing
RESOLVEphasing
CNSrefinement
PDB_EXTRACTdata extraction
ADSCdata collection
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-06-05
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance