6OEI

Yeast Spc42 N-terminal coiled-coil fused to PDB: 3K2N


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.58 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure and function of Spc42 coiled-coils in yeast centrosome assembly and duplication.

Drennan, A.C.Krishna, S.Seeger, M.A.Andreas, M.P.Gardner, J.M.Sether, E.K.R.Jaspersen, S.L.Rayment, I.

(2019) Mol Biol Cell 30: 1505-1522

  • DOI: 10.1091/mbc.E19-03-0167
  • Primary Citation of Related Structures:  
    6OD2, 6OEI, 6OEC

  • PubMed Abstract: 
  • Centrosomes and spindle pole bodies (SPBs) are membraneless organelles whose duplication and assembly is necessary for bipolar mitotic spindle formation. The structural organization and functional roles of major proteins in these organelles can provide critical insights into cell division control ...

    Centrosomes and spindle pole bodies (SPBs) are membraneless organelles whose duplication and assembly is necessary for bipolar mitotic spindle formation. The structural organization and functional roles of major proteins in these organelles can provide critical insights into cell division control. Spc42, a phosphoregulated protein with an N-terminal dimeric coiled-coil (DCC), assembles into a hexameric array at the budding yeast SPB core, where it functions as a scaffold for SPB assembly. Here, we present in vitro and in vivo data to elucidate the structural arrangement and biological roles of Spc42 elements. Crystal structures reveal details of two additional coiled-coils in Spc42: a central trimeric coiled-coil and a C-terminal antiparallel DCC. Contributions of the three Spc42 coiled-coils and adjacent undetermined regions to the formation of an ∼145 Å hexameric lattice in an in vitro lipid monolayer assay and to SPB duplication and assembly in vivo reveal structural and functional redundancy in Spc42 assembly. We propose an updated model that incorporates the inherent symmetry of these Spc42 elements into a lattice, and thereby establishes the observed sixfold symmetry. The implications of this model for the organization of the central SPB core layer are discussed.


    Organizational Affiliation

    Department of Biochemistry, University of Wisconsin-Madison, WI 53706.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Spindle pole body component SPC42,Sigma-54-dependent transcriptional regulatorA298Saccharomyces cerevisiae S288CChlorobaculum tepidum TLS
This entity is chimeric
Mutation(s): 0 
Gene Names: SPC42YKL042WYKL255CT0108
UniProt
Find proteins for P36094 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P36094 
Go to UniProtKB:  P36094
Find proteins for Q8KG60 (Chlorobaculum tepidum (strain ATCC 49652 / DSM 12025 / NBRC 103806 / TLS))
Explore Q8KG60 
Go to UniProtKB:  Q8KG60
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MPD
Query on MPD

Download Ideal Coordinates CCD File 
B [auth A], C [auth A](4S)-2-METHYL-2,4-PENTANEDIOL
C6 H14 O2
SVTBMSDMJJWYQN-YFKPBYRVSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
AL-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.58 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.664α = 90
b = 193.108β = 90
c = 95.842γ = 90
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
CRANK2phasing

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesP01GM105537

Revision History  (Full details and data files)

  • Version 1.0: 2019-04-24
    Type: Initial release
  • Version 1.1: 2019-06-12
    Changes: Data collection, Database references
  • Version 1.2: 2020-01-01
    Changes: Author supporting evidence