8JY6

Structure of TbAQP2 in complex with anti-trypanosomatid drug melarsoprol


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


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Literature

Structural insights into drug transport by an aquaglyceroporin.

Chen, W.Zou, R.Mei, Y.Li, J.Xuan, Y.Cui, B.Zou, J.Wang, J.Lin, S.Zhang, Z.Wang, C.

(2024) Nat Commun 15: 3985-3985

  • DOI: https://doi.org/10.1038/s41467-024-48445-4
  • Primary Citation of Related Structures:  
    8JY6, 8JY7, 8JY8

  • PubMed Abstract: 

    Pentamidine and melarsoprol are primary drugs used to treat the lethal human sleeping sickness caused by the parasite Trypanosoma brucei. Cross-resistance to these two drugs has recently been linked to aquaglyceroporin 2 of the trypanosome (TbAQP2). TbAQP2 is the first member of the aquaporin family described as capable of drug transport; however, the underlying mechanism remains unclear. Here, we present cryo-electron microscopy structures of TbAQP2 bound to pentamidine or melarsoprol. Our structural studies, together with the molecular dynamic simulations, reveal the mechanisms shaping substrate specificity and drug permeation. Multiple amino acids in TbAQP2, near the extracellular entrance and inside the pore, create an expanded conducting tunnel, sterically and energetically allowing the permeation of pentamidine and melarsoprol. Our study elucidates the mechanism of drug transport by TbAQP2, providing valuable insights to inform the design of drugs against trypanosomiasis.


  • Organizational Affiliation

    Center for Human Tissues and Organs Degeneration, Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 581055, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Aquaglyceroporin 2
A, B, C, D
343Trypanosoma brucei bruceiMutation(s): 0 
Gene Names: aqp2
Membrane Entity: Yes 
UniProt
Find proteins for Q6ZXT3 (Trypanosoma brucei brucei)
Explore Q6ZXT3 
Go to UniProtKB:  Q6ZXT3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6ZXT3
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.50 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONcryoSPARCv2

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Natural Science Foundation of China (NSFC)China--

Revision History  (Full details and data files)

  • Version 1.0: 2024-05-29
    Type: Initial release