3WUV

Structure basis of inactivating cell abscission with chimera peptide 2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.79 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.202 

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 biochemical insights into the role of testis-expressed gene 14 (TEX14) in forming the stable intercellular bridges of germ cells.

Kim, H.J.Yoon, J.Matsuura, A.Na, J.H.Lee, W.K.Kim, H.Choi, J.W.Park, J.E.Park, S.J.Kim, K.T.Chang, R.Lee, B.I.Yu, Y.G.Shin, Y.K.Jeong, C.Rhee, K.Lee, H.H.

(2015) Proc Natl Acad Sci U S A 112: 12372-12377

  • DOI: https://doi.org/10.1073/pnas.1418606112
  • Primary Citation of Related Structures:  
    3WUT, 3WUU, 3WUV

  • PubMed Abstract: 

    Intercellular bridges are a conserved feature of spermatogenesis in mammalian germ cells and derive from arresting cell abscission at the final stage of cytokinesis. However, it remains to be fully understood how germ cell abscission is arrested in the presence of general cytokinesis components. The TEX14 (testis-expressed gene 14) protein is recruited to the midbody and plays a key role in the inactivation of germ cell abscission. To gain insights into the structural organization of TEX14 at the midbody, we have determined the crystal structures of the EABR [endosomal sorting complex required for transport (ESCRT) and ALIX-binding region] of CEP55 bound to the TEX14 peptide (or its chimeric peptides) and performed functional characterization of the CEP55-TEX14 interaction by multiexperiment analyses. We show that TEX14 interacts with CEP55-EABR via its AxGPPx3Y (Ala793, Gly795, Pro796, Pro797, and Tyr801) and PP (Pro803 and Pro804) sequences, which together form the AxGPPx3YxPP motif. TEX14 competitively binds to CEP55-EABR to prevent the recruitment of ALIX, which is a component of the ESCRT machinery with the AxGPPx3Y motif. We also demonstrate that a high affinity and a low dissociation rate of TEX14 to CEP55, and an increase in the local concentration of TEX14, cooperatively prevent ALIX from recruiting ESCRT complexes to the midbody. The action mechanism of TEX14 suggests a scheme of how to inactivate the abscission of abnormal cells, including cancer cells.


  • Organizational Affiliation

    Department of Bio & Nano Chemistry, Kookmin University, Seoul 136-702, Korea;


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Centrosomal protein of 55 kDa
A, B, D, E, G
A, B, D, E, G, H, J, K, M, N, P, Q
63Homo sapiensMutation(s): 0 
Gene Names: CEP55
UniProt & NIH Common Fund Data Resources
Find proteins for Q53EZ4 (Homo sapiens)
Explore Q53EZ4 
Go to UniProtKB:  Q53EZ4
PHAROS:  Q53EZ4
GTEx:  ENSG00000138180 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ53EZ4
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
peptide from Programmed cell death 6-interacting protein
C, F, I, L, O
C, F, I, L, O, R
14Homo sapiensMutation(s): 4 
UniProt & NIH Common Fund Data Resources
Find proteins for Q8WUM4 (Homo sapiens)
Explore Q8WUM4 
Go to UniProtKB:  Q8WUM4
PHAROS:  Q8WUM4
GTEx:  ENSG00000170248 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8WUM4
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.79 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.202 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 233.066α = 90
b = 134.671β = 90.02
c = 88.325γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
PHENIXmodel building
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-07-15
    Type: Initial release
  • Version 1.1: 2015-10-07
    Changes: Database references
  • Version 1.2: 2022-08-24
    Changes: Database references
  • Version 1.3: 2023-11-08
    Changes: Data collection, Refinement description