9KYM | pdb_00009kym

Folate ECF transporter affected by PFOS

• PDB DOI: https://doi.org/10.2210/pdb9KYM/pdb
• EM Map EMD-62647: EMDB EMDataResource

• Classification: HYDROLASE/TRANSPORT PROTEIN
• Organism(s): Levilactobacillus brevis ATCC 367
• Expression System: Escherichia coli
• Mutation(s): No 
• Membrane Protein: Yes  MemProtMD


• Deposited: 2024-12-09 Released: 2025-06-18 
• Deposition Author(s): Gao, Y., Wang, Z.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.93 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

First Cryo-EM Structural Observation on the Interaction of Folate ECF Transporter with Perfluoroalkyl Substances

Wang, Z., Li, H., Gao, Y.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 4-mer - A1B1C1D1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 4-mer - A2B1C1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 112.61 kDa 
• Atom Count: 7,837 
• Modeled Residue Count: 998 
• Deposited Residue Count: 1,010 
• Unique protein chains: 4

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Energy-coupling factor transporter ATP-binding protein EcfA1	A	278	Levilactobacillus brevis ATCC 367	Mutation(s): 0  Gene Names: ecfA1, cbiO1, LVIS_1662 EC: 7 Membrane Entity: Yes
UniProt
Find proteins for Q03PY5 (Levilactobacillus brevis (strain ATCC 367 / BCRC 12310 / CIP 105137 / JCM 1170 / LMG 11437 / NCIMB 947 / NCTC 947)) Explore Q03PY5  Go to UniProtKB:  Q03PY5

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Energy-coupling factor transporter ATP-binding protein EcfA2	B	289	Levilactobacillus brevis ATCC 367	Mutation(s): 0  Gene Names: ecfA2, cbiO2, LVIS_1661 EC: 3.6.3 (PDB Primary Data), 7 (UniProt) Membrane Entity: Yes
UniProt
Find proteins for Q03PY6 (Levilactobacillus brevis (strain ATCC 367 / BCRC 12310 / CIP 105137 / JCM 1170 / LMG 11437 / NCIMB 947 / NCTC 947)) Explore Q03PY6  Go to UniProtKB:  Q03PY6

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Energy-coupling factor transporter transmembrane protein EcfT	C	266	Levilactobacillus brevis ATCC 367	Mutation(s): 0  Gene Names: ecfT, LVIS_1660 Membrane Entity: Yes
UniProt
Find proteins for Q03PY7 (Levilactobacillus brevis (strain ATCC 367 / BCRC 12310 / CIP 105137 / JCM 1170 / LMG 11437 / NCIMB 947 / NCTC 947)) Explore Q03PY7  Go to UniProtKB:  Q03PY7

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Folate family ECF transporter S component	D	177	Levilactobacillus brevis ATCC 367	Mutation(s): 0  Gene Names: LVIS_0823 Membrane Entity: Yes
UniProt
Find proteins for Q03S56 (Levilactobacillus brevis (strain ATCC 367 / BCRC 12310 / CIP 105137 / JCM 1170 / LMG 11437 / NCIMB 947 / NCTC 947)) Explore Q03S56  Go to UniProtKB:  Q03S56

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.93 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2025-06-18 
Deposition Author(s): Gao, Y., Wang, Z.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	41925029

Revision History  

• Version 1.0: 2025-06-18
  Type: Initial release
  
• Version 1.1: 2025-07-16
  Changes: Data collection