8G3A

BceAB-S nucleotide free TM state 1


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Architecture of a complete Bce-type antimicrobial peptide resistance module.

George, N.L.Orlando, B.J.

(2023) Nat Commun 14: 3896-3896

  • DOI: https://doi.org/10.1038/s41467-023-39678-w
  • Primary Citation of Related Structures:  
    8G3A, 8G3B, 8G3F, 8G3L, 8G4C, 8G4D

  • PubMed Abstract: 

    Gram-positive bacteria synthesize and secrete antimicrobial peptides that target the essential process of peptidoglycan synthesis. These antimicrobial peptides not only regulate the dynamics of microbial communities but are also of clinical importance as exemplified by peptides such as bacitracin, vancomycin, and daptomycin. Many gram-positive species have evolved specialized antimicrobial peptide sensing and resistance machinery known as Bce modules. These modules are membrane protein complexes formed by an unusual Bce-type ABC transporter interacting with a two-component system sensor histidine kinase. In this work, we provide the first structural insight into how the membrane protein components of these modules assemble into a functional complex. A cryo-EM structure of an entire Bce module revealed an unexpected mechanism of complex assembly, and extensive structural flexibility in the sensor histidine kinase. Structures of the complex in the presence of a non-hydrolysable ATP analog reveal how nucleotide binding primes the complex for subsequent activation. Accompanying biochemical data demonstrate how the individual membrane protein components of the complex exert functional control over one another to create a tightly regulated enzymatic system.


  • Organizational Affiliation

    Dept. of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Bacitracin export permease protein BceB646Bacillus subtilis subsp. subtilis str. 168Mutation(s): 0 
Gene Names: bceBbarDytsDBSU30370
Membrane Entity: Yes 
UniProt
Find proteins for O34741 (Bacillus subtilis (strain 168))
Explore O34741 
Go to UniProtKB:  O34741
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO34741
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Bacitracin export ATP-binding protein BceA
B, C
261Bacillus subtilis subsp. subtilis str. 168Mutation(s): 0 
Gene Names: bceAbarCytsCBSU30380
UniProt
Find proteins for O34697 (Bacillus subtilis (strain 168))
Explore O34697 
Go to UniProtKB:  O34697
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO34697
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Sensor protein BceS
D, E
334Bacillus subtilis subsp. subtilis str. 168Mutation(s): 0 
Gene Names: bceSbarBytsBBSU30390
EC: 2.7.13.3
Membrane Entity: Yes 
UniProt
Find proteins for O35044 (Bacillus subtilis (strain 168))
Explore O35044 
Go to UniProtKB:  O35044
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO35044
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR35GM146721

Revision History  (Full details and data files)

  • Version 1.0: 2023-06-21
    Type: Initial release
  • Version 1.1: 2023-07-12
    Changes: Database references
  • Version 1.2: 2024-06-19
    Changes: Data collection