Crystal structure of the ZP-N1 domain of mouse sperm receptor ZP2 at 0.95 A resolution

  • Classification: CELL ADHESION
  • Organism(s): Mus musculus
  • Expression System: Homo sapiens
  • Mutation(s): Yes 

  • Deposited: 2016-03-01 Released: 2017-06-14 
  • Deposition Author(s): Dioguardi, E., Han, L., Nishimura, K., De Sanctis, D., Jovine, L.
  • Funding Organization(s): Karolinska Institutet, Swedish Research Council, Goran Gustafsson Foundation for Research in Natural Sciences and Medicine, Sven and Ebba-Christina Hagberg foundation, European Molecular Biology Organization, European Union

Experimental Data Snapshot

  • Resolution: 0.95 Å
  • R-Value Free: 0.145 
  • R-Value Work: 0.127 
  • R-Value Observed: 0.128 

wwPDB Validation   3D Report Full Report

This is version 1.3 of the entry. See complete history


Structural Basis of Egg Coat-Sperm Recognition at Fertilization.

Raj, I.Sadat Al Hosseini, H.Dioguardi, E.Nishimura, K.Han, L.Villa, A.de Sanctis, D.Jovine, L.

(2017) Cell 169: 1315-1326.e17

  • DOI: https://doi.org/10.1016/j.cell.2017.05.033
  • Primary Citation of Related Structures:  
    5II4, 5II5, 5II6, 5II7, 5II8, 5II9, 5IIA, 5IIB, 5IIC, 5MR2, 5MR3

  • PubMed Abstract: 

    Recognition between sperm and the egg surface marks the beginning of life in all sexually reproducing organisms. This fundamental biological event depends on the species-specific interaction between rapidly evolving counterpart molecules on the gametes. We report biochemical, crystallographic, and mutational studies of domain repeats 1-3 of invertebrate egg coat protein VERL and their interaction with cognate sperm protein lysin. VERL repeats fold like the functionally essential N-terminal repeat of mammalian sperm receptor ZP2, whose structure is also described here. Whereas sequence-divergent repeat 1 does not bind lysin, repeat 3 binds it non-species specifically via a high-affinity, largely hydrophobic interface. Due to its intermediate binding affinity, repeat 2 selectively interacts with lysin from the same species. Exposure of a highly positively charged surface of VERL-bound lysin suggests that complex formation both disrupts the organization of egg coat filaments and triggers their electrostatic repulsion, thereby opening a hole for sperm penetration and fusion.

  • Organizational Affiliation

    Department of Biosciences and Nutrition and Center for Innovative Medicine, Karolinska Institutet, Huddinge, SE-141 83, Sweden.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Zona pellucida sperm-binding protein 2112Mus musculusMutation(s): 1 
Gene Names: Zp2Zp-2Zpa
Find proteins for P20239 (Mus musculus)
Explore P20239 
Go to UniProtKB:  P20239
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP20239
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 0.95 Å
  • R-Value Free: 0.145 
  • R-Value Work: 0.127 
  • R-Value Observed: 0.128 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 39.539α = 90
b = 50.013β = 90
c = 51.751γ = 90
Software Package:
Software NamePurpose
DIALSdata reduction
Aimlessdata scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Karolinska InstitutetSweden--
Swedish Research CouncilSweden2012-5093
Goran Gustafsson Foundation for Research in Natural Sciences and MedicineSweden--
Sven and Ebba-Christina Hagberg foundationSweden--
European Molecular Biology Organization--
European UnionERC 260759

Revision History  (Full details and data files)

  • Version 1.0: 2017-06-14
    Type: Initial release
  • Version 1.1: 2017-06-28
    Changes: Database references
  • Version 1.2: 2017-09-06
    Changes: Author supporting evidence
  • Version 1.3: 2017-11-29
    Changes: Database references