8SQB

The cryo-EM structure of the EcBAM/EspP(beta7-12) complex

• PDB DOI: https://doi.org/10.2210/pdb8SQB/pdb
• EM Map EMD-40701: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Escherichia coli
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2023-05-04 Released: 2024-05-08 
• Deposition Author(s): Wu, R., Noinaj, N.
• Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.80 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

BAM orchestrates OMP biogenesis using a beta-templating mechanism

Wu, R., Ryoo, D., Kuo, K.M., Gumbart, J.C., Noinaj, N.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 6-mer - A1B1C1D1E1F1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content

• Total Structure Weight: 262.2 kDa 
• Atom Count: 12,991 
• Modelled Residue Count: 1,676 
• Deposited Residue Count: 2,376 
• Unique protein chains: 6

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Outer membrane protein assembly factor BamA	A	786	Escherichia coli	Mutation(s): 0  Gene Names: bamA
UniProt
Find proteins for C3TPJ2 (Escherichia coli) Explore C3TPJ2  Go to UniProtKB:  C3TPJ2

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Outer membrane protein assembly factor BamB	B	372	Escherichia coli	Mutation(s): 0  Gene Names: bamB, yfgL, b2512, JW2496
UniProt
Find proteins for P77774 (Escherichia coli (strain K12)) Explore P77774  Go to UniProtKB:  P77774

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Outer membrane protein assembly factor BamC	C	319	Escherichia coli	Mutation(s): 0  Gene Names: bamC
UniProt
Find proteins for C3T0D3 (Escherichia coli) Explore C3T0D3  Go to UniProtKB:  C3T0D3

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Outer membrane protein assembly factor BamD	D	225	Escherichia coli	Mutation(s): 0  Gene Names: bamD
UniProt
Find proteins for C3SYV7 (Escherichia coli) Explore C3SYV7  Go to UniProtKB:  C3SYV7

Entity ID: 5
Molecule	Chains	Sequence Length	Organism	Details	Image
Outer membrane protein assembly factor BamE	E	93	Escherichia coli	Mutation(s): 0  Gene Names: bamE, smpA, smpA_1, smpA_2
UniProt
Find proteins for A0A366UU94 (Escherichia coli) Explore A0A366UU94  Go to UniProtKB:  A0A366UU94

Entity ID: 6
Molecule	Chains	Sequence Length	Organism	Details	Image
Maltodextrin-binding protein,EspP(b7-12)	F	581	Escherichia coli	Mutation(s): 0  Gene Names: malE
UniProt
Find proteins for C3SHQ8 (Escherichia coli) Explore C3SHQ8  Go to UniProtKB:  C3SHQ8

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.80 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.18rc1_3777:

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-05-08 
Deposition Author(s): Wu, R., Noinaj, N.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	1R01GM127884
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	1R01GM127896
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	1R01GM123169

Revision History  

• Version 1.0: 2024-05-08
  Type: Initial release