Crystal structure of mouse TEX101

Experimental Data Snapshot

  • Resolution: 2.35 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.202 

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This is version 2.2 of the entry. See complete history


Crystal structure of TEX101, a glycoprotein essential for male fertility, reveals the presence of tandemly arranged Ly6/uPAR domains.

Masutani, M.Sakurai, S.Shimizu, T.Ohto, U.

(2020) FEBS Lett 594: 3020-3031

  • DOI: https://doi.org/10.1002/1873-3468.13875
  • Primary Citation of Related Structures:  
    7BPR, 7BPS

  • PubMed Abstract: 

    Testis-expressed gene 101 (TEX101) is a glycosyl-phosphatidylinositol-anchored glycoprotein essential for sperm fertility and spermatogenesis. TEX101 interacts with lymphocyte antigen 6 complex, locus K (Ly6k) as well as a disintegrin and metallopeptidase domain 3 (ADAM3). Although these proteins are considered essential for fertility, the associated mechanisms remain uncharacterized. Herein, we determined the crystal structure of human and mouse TEX101, revealing that TEX101 contains two tandem Ly6/uPAR (LU) domains. Detailed structural analyses revealed characteristic surfaces of TEX101 that may be involved in the interactions with other proteins or membranes. These results provide the structural basis for the role of TEX101 in fertilization and could contribute to developing diagnostic methods and treatments for infertility or developing male contraceptives.

  • Organizational Affiliation

    Graduate School of Pharmaceutical Sciences, The University of Tokyo, Hongo, Japan.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Testis-expressed protein 101
A, B
211Mus musculusMutation(s): 0 
Gene Names: Tex101
UniProt & NIH Common Fund Data Resources
Find proteins for Q9JMI7 (Mus musculus)
Explore Q9JMI7 
Go to UniProtKB:  Q9JMI7
IMPC:  MGI:1930791
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9JMI7
Sequence Annotations
  • Reference Sequence


Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
Glycosylation Resources
GlyTouCan:  G86851RC
GlyCosmos:  G86851RC
GlyGen:  G86851RC
Entity ID: 3
MoleculeChains Length2D Diagram Glycosylation3D Interactions
D, E, F
Glycosylation Resources
GlyTouCan:  G21290RB
GlyCosmos:  G21290RB
GlyGen:  G21290RB
Experimental Data & Validation

Experimental Data

  • Resolution: 2.35 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.199 
  • R-Value Observed: 0.202 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 138.6α = 90
b = 211.545β = 90
c = 37.286γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling
PDB_EXTRACTdata extraction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2020-07-15
    Type: Initial release
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary
  • Version 2.1: 2020-12-23
    Changes: Database references, Structure summary
  • Version 2.2: 2024-04-03
    Changes: Data collection, Database references, Refinement description