9E0S | pdb_00009e0s

Cryo-EM structure of a the periplasmic insert from Myxococcus TAtC

• PDB DOI: https://doi.org/10.2210/pdb9E0S/pdb

• Classification: TRANSLOCASE
• Organism(s): Myxococcus xanthus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2024-10-18 Released: 2025-08-27 
• Deposition Author(s): Deme, J.C., Bryant, O.J., Berks, B.C., Lea, S.M.
• Funding Organization(s): Medical Research Council (MRC, United Kingdom), Wellcome Trust, National Institutes of Health/National Cancer Institute (NIH/NCI)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.98 Å
• R-Value Free: 
  0.224 (Depositor), 0.222 (DCC) 
• R-Value Work: 
  0.187 (Depositor), 0.189 (DCC) 
• R-Value Observed: 
  0.189 (Depositor) 

Literature

Structure of the twin-arginine protein translocation pathway core complex and the molecular basis for substrate recognition

Deme, J.C., Bryant, O.J., Berks, B.C., Lea, S.M.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 61.1 kDa 
• Atom Count: 4,365 
• Modeled Residue Count: 529 
• Deposited Residue Count: 555 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Sec-independent protein translocase protein TatC	A, B, C	185	Myxococcus xanthus	Mutation(s): 0  Gene Names: tatC, N3T43_29770
UniProt
Find proteins for Q2PHA2 (Myxococcus xanthus) Explore Q2PHA2  Go to UniProtKB:  Q2PHA2

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	D [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B, C	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.98 Å
• R-Value Free:  0.224 (Depositor), 0.222 (DCC) 
• R-Value Work:  0.187 (Depositor), 0.189 (DCC) 
• R-Value Observed: 0.189 (Depositor) 

Space Group: P 4 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 110.776	α = 90
b = 110.776	β = 90
c = 101.898	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
MOSFLM	data reduction
SCALA	data scaling
AutoSol	phasing

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2025-08-27 
Deposition Author(s): Deme, J.C., Bryant, O.J., Berks, B.C., Lea, S.M.

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Funding Organization	Location	Grant Number
Medical Research Council (MRC, United Kingdom)	United Kingdom	MR/L000776/1
Wellcome Trust	United Kingdom	107929/Z/15/Z
National Institutes of Health/National Cancer Institute (NIH/NCI)	United States	Intramural Research Program

Revision History  

• Version 1.0: 2025-08-27
  Type: Initial release