8US3

C2 Crystal structure of TamA from Pseudomonas aeruginosa at 3.1 Ang

• PDB DOI: https://doi.org/10.2210/pdb8US3/pdb

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


• Deposited: 2023-10-27 Released: 2024-06-26 
• Deposition Author(s): Mellouk, A., Moraes, T.F., Calmettes, C.
• Funding Organization(s): Natural Sciences and Engineering Research Council (NSERC, Canada)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.10 Å
• R-Value Free: 0.300 
• R-Value Work: 0.250 

Literature

POTRA domains of the TamA insertase interact with the outer membrane and modulate membrane properties

Mellouk, A., Jaouen, P.L., Ruel, L.J., Le, M., Martini, C., Moraes, T.F., El Bakkouri, M., Lague, P., Boisselier, E., Calmettes, C.

(2024) Proc Natl Acad Sci U S A 

• DOI: https://doi.org/10.1073/pnas.2402543121

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 61.98 kDa 
• Atom Count: 4,343 
• Modelled Residue Count: 552 
• Deposited Residue Count: 559 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Translocation and assembly module subunit TamA	A	559	Pseudomonas aeruginosa PAO1	Mutation(s): 0  Gene Names: PA2543
UniProt
Find proteins for Q9I0U1 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)) Explore Q9I0U1  Go to UniProtKB:  Q9I0U1

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
C8E	B [auth A]	(HYDROXYETHYLOXY)TRI(ETHYLOXY)OCTANE C16 H34 O5 FEOZZFHAVXYAMB-UHFFFAOYSA-N
MG	C [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.10 Å
• R-Value Free: 0.300 
• R-Value Work: 0.250 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 140.4	α = 90
b = 63.88	β = 99.4
c = 81.36	γ = 90

Software Package:

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-06-26 
Deposition Author(s): Mellouk, A., Moraes, T.F., Calmettes, C.

---

Funding Organization	Location	Grant Number
Natural Sciences and Engineering Research Council (NSERC, Canada)	Canada	--

Revision History  

• Version 1.0: 2024-06-26
  Type: Initial release