5DMS

Mouse Polo-box domain and Emi2 (169-177)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89999 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structural basis for recognition of Emi2 by Polo-like kinase 1 and development of peptidomimetics blocking oocyte maturation and fertilization.

Jia, J.L.Han, Y.H.Kim, H.C.Ahn, M.Kwon, J.W.Luo, Y.Gunasekaran, P.Lee, S.J.Lee, K.S.Bang, J.K.Kim, N.H.Namgoong, S.

(2015) Sci Rep 5: 14626-14626

  • DOI: 10.1038/srep14626
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • In a mammalian oocyte, completion of meiosis is suspended until fertilization by a sperm, and the cell cycle is arrested by a biochemical activity called cytostatic factor (CSF). Emi2 is one of the CSFs, and it maintains the protein level of maturati ...

    In a mammalian oocyte, completion of meiosis is suspended until fertilization by a sperm, and the cell cycle is arrested by a biochemical activity called cytostatic factor (CSF). Emi2 is one of the CSFs, and it maintains the protein level of maturation promoting factor (MPF) by inhibiting ubiquitin ligase anaphase promoting complex/cyclosome (APC/C). Degradation of Emi2 via ubiquitin-mediated proteolysis after fertilization requires phosphorylation by Polo-like kinase 1 (Plk1). Therefore, recognition and phosphorylation of Emi2 by Plk1 are crucial steps for cell cycle resumption, but the binding mode of Emi2 and Plk1 is poorly understood. Using biochemical assays and X-ray crystallography, we found that two phosphorylated threonines (Thr(152) and Thr(176)) in Emi2 are each responsible for the recruitment of one Plk1 molecule by binding to its C-terminal polo box domain (PBD). We also found that meiotic maturation and meiosis resumption via parthenogenetic activation were impaired when Emi2 interaction with Plk1-PBD was blocked by a peptidomimetic called 103-8. Because of the inherent promiscuity of kinase inhibitors, our results suggest that targeting PBD of Plk1 may be an effective strategy for the development of novel and specific contraceptive agents that block oocyte maturation and/or fertilization.


    Organizational Affiliation

    Department of Animal Sciences, Chungbuk National University, Republic of Korea.,Division of Magnetic Resonance, Korea Basic Science Institute, Ochang, Korea.,National Cancer Institute, National Institute of Health, Rockville, Maryland, United States.,College of Pharmacy, Chungbuk National University, Republic of Korea.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein kinase PLK1
A, C
237Mus musculusMutation(s): 0 
Gene Names: Plk1 (Plk)
EC: 2.7.11.21
Find proteins for Q07832 (Mus musculus)
Go to UniProtKB:  Q07832
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
F-box only protein 43
B, D
9Mus musculusMutation(s): 0 
Gene Names: Fbxo43 (Emi2)
Find proteins for Q8CDI2 (Mus musculus)
Go to UniProtKB:  Q8CDI2
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TPO
Query on TPO
B, D
L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.89999 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.195 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 56.820α = 90.00
b = 70.450β = 90.13
c = 59.150γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2015-09-09 
  • Released Date: 2015-10-28 
  • Deposition Author(s): Namgoong, S.

Revision History 

  • Version 1.0: 2015-10-28
    Type: Initial release