8S5G | pdb_00008s5g

BceABS nucleotide-free state

• PDB DOI: https://doi.org/10.2210/pdb8S5G/pdb
• EM Map EMD-19734: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Bacillus subtilis subsp. subtilis str. 168
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 
• Membrane Protein: Yes  MemProtMD


• Deposited: 2024-02-23 Released: 2025-09-03 
• Deposition Author(s): McAndrew, M.B.L., Brotherton, D.H., Crow, A.
• Funding Organization(s): Medical Research Council (MRC, United Kingdom)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.60 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Starting Model: in silico

Literature

BceABS nucleotide-free state

McAndrew, M.B.L., Brotherton, D.H., Stansfeld, P.J., Crow, A.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 5-mer - A2B2C1 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - B2 

Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - B2 

Biological assembly 1 assigned by authors and generated by (software)

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 212.99 kDa 
• Atom Count: 10,822 
• Modeled Residue Count: 1,343 
• Deposited Residue Count: 1,860 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Bacitracin export permease protein BceB	A	646	Bacillus subtilis subsp. subtilis str. 168	Mutation(s): 0  Gene Names: bceB, barD, ytsD, BSU30370 Membrane Entity: Yes
UniProt
Find proteins for O34741 (Bacillus subtilis (strain 168)) Explore O34741  Go to UniProtKB:  O34741

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Bacitracin export ATP-binding protein BceA	B, C	273	Bacillus subtilis subsp. subtilis str. 168	Mutation(s): 0  Gene Names: bceA, barC, ytsC, BSU30380
UniProt
Find proteins for O34697 (Bacillus subtilis (strain 168)) Explore O34697  Go to UniProtKB:  O34697

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Sensor protein BceS	D, E	334	Bacillus subtilis subsp. subtilis str. 168	Mutation(s): 0  Gene Names: bceS, barB, ytsB, BSU30390 EC: 2.7.13.3 Membrane Entity: Yes
UniProt
Find proteins for O35044 (Bacillus subtilis (strain 168)) Explore O35044  Go to UniProtKB:  O35044

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CDL	G [auth E]	CARDIOLIPIN C81 H156 O17 P2 XVTUQDWPJJBEHJ-KZCWQMDCSA-L
3PE	F [auth D]	1,2-Distearoyl-sn-glycerophosphoethanolamine C41 H82 N O8 P LVNGJLRDBYCPGB-LDLOPFEMSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.60 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	RELION	5-beta
MODEL REFINEMENT	PHENIX	1.20.1
MODEL REFINEMENT	ISOLDE

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2025-09-03 
Deposition Author(s): McAndrew, M.B.L., Brotherton, D.H., Crow, A.

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Funding Organization	Location	Grant Number
Medical Research Council (MRC, United Kingdom)	United Kingdom	MR/N014294/1

Revision History  

• Version 1.0: 2025-09-03
  Type: Initial release