9XDC | pdb_00009xdc

TamAB hybrid barrel state

• PDB DOI: https://doi.org/10.2210/pdb9XDC/pdb
• EM Map EMD-66762: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Escherichia coli str. K-12 substr. MG1655star
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2025-10-27 Released: 2026-01-28 
• Deposition Author(s): Dong, C., Zhang, Z., Yang, B.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.69 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

The translocation and assembly module TamAB involves in outer membrane phospholipid transport and outer membrane protein insertion

Dong, C., Zhang, Z., Yang, B.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 201.75 kDa 
• Atom Count: 6,763 
• Modeled Residue Count: 888 
• Deposited Residue Count: 1,836 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Translocation and assembly module subunit TamA	A	577	Escherichia coli str. K-12 substr. MG1655star	Mutation(s): 0  Gene Names: tamA, yftM, ytfM, b4220, JW4179
UniProt
Find proteins for P0ADE4 (Escherichia coli (strain K12)) Explore P0ADE4  Go to UniProtKB:  P0ADE4

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Translocation and assembly module subunit TamB	B	1,259	Escherichia coli str. K-12 substr. MG1655star	Mutation(s): 0  Gene Names: tamB, ytfN, ytfO, b4221, JW4180
UniProt
Find proteins for P39321 (Escherichia coli (strain K12)) Explore P39321  Go to UniProtKB:  P39321

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.69 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.20.1_4487
RECONSTRUCTION	cryoSPARC	4.5.3

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2026-01-28 
Deposition Author(s): Dong, C., Zhang, Z., Yang, B.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	--

Revision History  

• Version 1.0: 2026-01-28
  Type: Initial release