6HC2

Crystal structure of NuMA/LGN hetero-hexamers


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.31 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Hexameric NuMA:LGN structures promote multivalent interactions required for planar epithelial divisions.

Pirovano, L.Culurgioni, S.Carminati, M.Alfieri, A.Monzani, S.Cecatiello, V.Gaddoni, C.Rizzelli, F.Foadi, J.Pasqualato, S.Mapelli, M.

(2019) Nat Commun 10: 2208-2208

  • DOI: 10.1038/s41467-019-09999-w
  • Primary Citation of Related Structures:  
    6HC2

  • PubMed Abstract: 
  • Cortical force generators connect epithelial polarity sites with astral microtubules, allowing dynein movement to orient the mitotic spindle as astral microtubules depolymerize. Complexes of the LGN and NuMA proteins, fundamental components of force generators, are recruited to the cortex by Gαi-subunits of heterotrimeric G-proteins ...

    Cortical force generators connect epithelial polarity sites with astral microtubules, allowing dynein movement to orient the mitotic spindle as astral microtubules depolymerize. Complexes of the LGN and NuMA proteins, fundamental components of force generators, are recruited to the cortex by Gαi-subunits of heterotrimeric G-proteins. They associate with dynein/dynactin and activate the motor activity pulling on astral microtubules. The architecture of cortical force generators is unknown. Here we report the crystal structure of NuMA:LGN hetero-hexamers, and unveil their role in promoting the assembly of active cortical dynein/dynactin motors that are required in orchestrating oriented divisions in polarized cells. Our work elucidates the basis for the structural organization of essential spindle orientation motors.


    Organizational Affiliation

    IEO, European Institute of Oncology IRCCS, 20141, MILANO, Italy. marina.mapelli@ieo.it.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
G-protein-signaling modulator 2
A, C, E, G, I, K, M, O
A, C, E, G, I, K, M, O, Q, S, U, W
367Homo sapiensMutation(s): 0 
Gene Names: GPSM2LGN
UniProt & NIH Common Fund Data Resources
Find proteins for P81274 (Homo sapiens)
Explore P81274 
Go to UniProtKB:  P81274
PHAROS:  P81274
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Nuclear mitotic apparatus protein 1
B, D, F, H, J, L, N, P
B, D, F, H, J, L, N, P, R, T, V, X
71Homo sapiensMutation(s): 0 
Gene Names: NUMA1NMP22NUMA
UniProt & NIH Common Fund Data Resources
Find proteins for Q14980 (Homo sapiens)
Explore Q14980 
Go to UniProtKB:  Q14980
PHAROS:  Q14980
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.31 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 153.94α = 90
b = 153.94β = 90
c = 732.95γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
xia2data reduction
xia2data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Italian Association for Cancer ResearchItalyIG 18629
ItalyRF-2013-02357254

Revision History  (Full details and data files)

  • Version 1.0: 2019-05-29
    Type: Initial release