26TP | pdb_000026tp

Crystal structure of the Pseudomonas aeruginosa MlaC-MlaD complex in space group P1

• PDB DOI: https://doi.org/10.2210/pdb26TP/pdb

• Classification: LIPID TRANSPORT
• Organism(s): Pseudomonas aeruginosa PAO1
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2026-05-14 Released: 2026-10-28 
• Deposition Author(s): Ozu, S., Matsumoto, D., Watanabe, Y.
• Funding Organization(s): Japan Society for the Promotion of Science (JSPS)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.56 Å
• R-Value Free: 
  0.303 (Depositor), 0.300 (DCC) 
• R-Value Work: 
  0.249 (Depositor), 0.247 (DCC) 
• R-Value Observed: 
  0.251 (Depositor) 

Starting Models: experimental

Literature

Structures of the Pseudomonas aeruginosa MlaC-MlaD complexes reveal a conformational switch mediated by the C-terminal helix of MlaC

Matsumoto, D., Ozu, S., Watanabe, Y.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Hetero 9-mer - A6B3 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 146.23 kDa 
• Atom Count: 9,211 
• Modeled Residue Count: 1,246 
• Deposited Residue Count: 1,329 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Mce/MlaD domain-containing protein	A, B, C, D, E, F	123	Pseudomonas aeruginosa PAO1	Mutation(s): 0  Gene Names: PA4454
UniProt
Find proteins for Q9HVW3 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)) Explore Q9HVW3  Go to UniProtKB:  Q9HVW3

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Toluene tolerance protein	G, H, I	197	Pseudomonas aeruginosa PAO1	Mutation(s): 0  Gene Names: PA4453
UniProt
Find proteins for Q9HVW4 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)) Explore Q9HVW4  Go to UniProtKB:  Q9HVW4

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
LPP (Subject of Investigation/LOI)	J [auth G], K [auth G], L [auth H], M [auth H]	2-(HEXADECANOYLOXY)-1-[(PHOSPHONOOXY)METHYL]ETHYL HEXADECANOATE C35 H69 O8 P PORPENFLTBBHSG-MGBGTMOVSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.56 Å
• R-Value Free:  0.303 (Depositor), 0.300 (DCC) 
• R-Value Work:  0.249 (Depositor), 0.247 (DCC) 
• R-Value Observed: 0.251 (Depositor) 

Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 61.713	α = 64.65
b = 88.639	β = 72.37
c = 88.814	γ = 72.28

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data scaling
XDS	data reduction
PHASER	phasing
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-10-28 
Deposition Author(s): Ozu, S., Matsumoto, D., Watanabe, Y.

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Funding Organization	Location	Grant Number
Japan Society for the Promotion of Science (JSPS)	Japan	JP25K09522

Revision History  

• Version 1.0: 2026-10-28
  Type: Initial release