6W3I

Crystal structure of a FAM46C mutant in complex with Plk4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.80 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.222 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structural and Functional Analyses of the FAM46C/Plk4 Complex.

Chen, H.Lu, D.Shang, G.Gao, G.Zhang, X.

(2020) Structure 28: 910-921.e4

  • DOI: https://doi.org/10.1016/j.str.2020.04.023
  • Primary Citation of Related Structures:  
    6W36, 6W38, 6W3I, 6W3J

  • PubMed Abstract: 

    FAM46C, a non-canonical poly(A) polymerase, is frequently mutated in multiple myeloma. Loss of function of FAM46C promotes cell survival of multiple myeloma, suggesting a tumor-suppressive role. FAM46C is also essential for fastening sperm head and flagellum, indispensable for male fertility. The molecular mechanisms of these functions of FAM46C remain elusive. We report the crystal structure of FAM46C to provide the basis for its poly(A) polymerase activity and rationalize mutations associated with multiple myeloma. In addition, we found that FAM46C interacts directly with the serine/threonine kinase Plk4, the master regulator of centrosome duplication. We present the structure of FAM46C in complex with the Cryptic Polo-Box 1-2 domains of Plk4. Our structure-based mutational analyses show that the interaction with Plk4 recruits FAM46C to centrosomes. Our data suggest that Plk4-mediated localization of FAM46C enables its regulation of centrosome structure and functions, which may underlie the roles for FAM46C in cell proliferation and sperm development.


  • Organizational Affiliation

    Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Terminal nucleotidyltransferase 5C345Homo sapiensMutation(s): 3 
Gene Names: TENT5CFAM46C
EC: 2.7.7.19
UniProt & NIH Common Fund Data Resources
Find proteins for Q5VWP2 (Homo sapiens)
Explore Q5VWP2 
Go to UniProtKB:  Q5VWP2
PHAROS:  Q5VWP2
GTEx:  ENSG00000183508 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5VWP2
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Serine/threonine-protein kinase PLK4223Homo sapiensMutation(s): 0 
Gene Names: PLK4SAKSTK18
EC: 2.7.11.21
UniProt & NIH Common Fund Data Resources
Find proteins for O00444 (Homo sapiens)
Explore O00444 
Go to UniProtKB:  O00444
PHAROS:  O00444
GTEx:  ENSG00000142731 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO00444
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.80 Å
  • R-Value Free: 0.261 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.222 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 142.291α = 90
b = 142.291β = 90
c = 147.884γ = 120
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Cancer Institute (NIH/NCI)United States1R01CA220283
Robert A. Welch FoundationUnited Statesi-1702

Revision History  (Full details and data files)

  • Version 1.0: 2020-05-06
    Type: Initial release
  • Version 1.1: 2020-06-03
    Changes: Database references
  • Version 1.2: 2020-08-19
    Changes: Database references
  • Version 1.3: 2023-10-18
    Changes: Data collection, Database references, Refinement description