9MW0 | pdb_00009mw0

Bipartite complex of MmpL5-AcpM from Mycolicibacterium smegmatis

Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.37 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history. 


Literature

Structures of MmpL complexes reveal the assembly and mechanism of this family of transporters.

Zhang, Z., Maharjan, R., Gregor, W.D., Klenotic, P.A., Yu, E.W.

(2025) Sci Adv 11: eadx1129-eadx1129

  • DOI: https://doi.org/10.1126/sciadv.adx1129
  • Primary Citation of Related Structures:  
    9MVZ, 9MW0, 9MX0

  • PubMed Abstract: 

    We coexpressed the mycobacterial membrane protein large 5 (MmpL5) transporter and MmpS5 adaptor proteins in Mycobacterium smegmatis and defined their structures from detergent-solubilized crude membranes. We observed that MmpL5 presents as a monomer in complex with the cytosolic meromycolate extension acyl carrier protein M (AcpM), where these AcpM-MmpL5 complexes generate regular two-dimensional arrays. We also provide structural information to show that M. smegmatis MmpL5 assembles as a trimer that interacts with MmpS5 and AcpM to form the tripartite complex AcpM-MmpL5-MmpS5 that spans both the inner and outer membranes of the mycobacterium. In addition, we found that MmpL5 and AcpM are able to form the trimeric AcpM-MmpL5 complex. The structural data reveal that the full-length MmpL5 trimer is capable of spanning the entire mycobacterial cell envelope to transport substrates. However, this assembly requires the presence of MmpS5 to stabilize secondary structural features of the MmpL5 periplasmic subdomains.

    • Organizational Affiliation: 
    • Department of Pharmacology, Case Western Reserve University School of Medicine, Cleveland, OH 44106, USA.

Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
MmpL5 proteinA [auth D],
C [auth E],
D [auth F]		967Mycolicibacterium smegmatisMutation(s): 0 
Gene Names: MSMEG_1382
Membrane Entity: Yes 
UniProt
Find proteins for A0A1Y0CC73 (Mycobacterium dioxanotrophicus)
Explore A0A1Y0CC73 
Go to UniProtKB:  A0A1Y0CC73
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A1Y0CC73
Sequence Annotations
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  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Meromycolate extension acyl carrier proteinB [auth G],
E [auth H],
F [auth I]		99Mycolicibacterium smegmatisMutation(s): 0 
Gene Names: acpM, MSMEG_4326, MSMEI_4226
UniProt
Find proteins for A0A1Y0C2R4 (Mycobacterium dioxanotrophicus)
Explore A0A1Y0C2R4 
Go to UniProtKB:  A0A1Y0C2R4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A1Y0C2R4
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.37 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX1.20.1_4487:

Structure Validation

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View more in-depth experimental data
Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United States--

Revision History  (Full details and data files)

  • Version 1.0: 2025-07-30
    Type: Initial release
  • Version 1.1: 2026-02-18
    Changes: Data collection, Database references