5ZOR

Solution structure of centrin4 from Trypanosoma brucei


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 500 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Solution structure of TbCentrin4 fromTrypanosoma bruceiand its interactions with Ca2+and other centrins.

Shan, F.Z.Ye, K.Q.Zhang, J.H.Liao, S.H.Zhang, X.C.Xu, C.Tu, X.M.

(2018) Biochem J 475: 3763-3778

  • DOI: https://doi.org/10.1042/BCJ20180752
  • Primary Citation of Related Structures:  
    5ZOR

  • PubMed Abstract: 

    Centrin is a conserved calcium-binding protein that plays an important role in diverse cellular biological processes such as ciliogenesis, gene expression, DNA repair and signal transduction. In Trypanosoma brucei , TbCentrin4 is mainly localized in basal bodies and bi-lobe structure, and is involved in the processes coordinating karyokinesis and cytokinesis. In the present study, we solved the solution structure of TbCentrin4 using NMR (nuclear magnetic resonance) spectroscopy. TbCentrin4 contains four EF-hand motifs consisting of eight α-helices. Isothermal titration calorimetry experiment showed that TbCentrin4 has a strong Ca 2+ binding ability. NMR chemical shift perturbation indicated that TbCentrin4 binds to Ca 2+ through its C-terminal domain composed of EF-hand 3 and 4. Meanwhile, we revealed that TbCentrin4 undergoes a conformational change and self-assembly induced by high concentration of Ca 2+ Intriguingly, localization of TbCentrin4 was dispersed or disappeared from basal bodies and the bi-lobe structure when the cells were treated with Ca 2+ in vivo , implying the influence of Ca 2+ on the cellular functions of TbCentrin4. Besides, we observed the interactions between TbCentrin4 and other Tbcentrins and revealed that the interactions are Ca 2+ dependent. Our findings provide a structural basis for better understanding the biological functions of TbCentrin4 in the relevant cellular processes.


  • Organizational Affiliation

    Hefei National Laboratory for Physical Science at Microscale and School of Life Science, University of Science and Technology of China, Hefei, Anhui, People's Republic of China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Centrin, putative149Trypanosoma brucei brucei TREU927Mutation(s): 0 
Gene Names: Tb927.7.3410
UniProt
Find proteins for Q57WF6 (Trypanosoma brucei brucei (strain 927/4 GUTat10.1))
Explore Q57WF6 
Go to UniProtKB:  Q57WF6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ57WF6
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 500 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChina31270780

Revision History  (Full details and data files)

  • Version 1.0: 2019-03-13
    Type: Initial release
  • Version 1.1: 2024-05-01
    Changes: Data collection, Database references