8RT5

I-layer structure (TrwF/VirB9CTD, TrwE/VirB10CTD) of the outer membrane core complex from the fully-assembled R388 type IV secretion system determined by cryo-EM.

• PDB DOI: https://doi.org/10.2210/pdb8RT5/pdb
• EM Map EMD-19479: EMDB EMDataResource

• Classification: MEMBRANE PROTEIN
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2024-01-25 Released: 2024-06-19 
• Deposition Author(s): Mace, K., Waksman, G.
• Funding Organization(s): Wellcome Trust

---

Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 2.69 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Cryo-EM structure of a conjugative type 4 secretion system identifies a molecular switch regulating conjugative pilus biogenesis

Mace, K., Waksman, G.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C16  (Explore in 3D)
Global Stoichiometry: Hetero 32-mer - A16B16 

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

Biological Assembly Evidence: electron microscopy

Macromolecule Content

• Total Structure Weight: 1,155.09 kDa 
• Atom Count: 17,456 
• Modelled Residue Count: 2,144 
• Deposited Residue Count: 10,576 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TrwE protein	A, AA [auth k], C [auth D], CA [auth n], E [auth G], EA [auth y], G [auth J], I [auth M], K [auth P], M [auth S], O [auth u], Q [auth V], S [auth Y], U [auth b], W [auth e], Y [auth h]	395	Escherichia coli	Mutation(s): 0  Gene Names: trwE
UniProt
Find proteins for O50337 (Escherichia coli) Explore O50337  Go to UniProtKB:  O50337

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
TrwF protein	B, BA [auth l], D [auth E], DA [auth o], F [auth H], FA [auth z], H [auth K], J [auth N], L [auth Q], N [auth T], P [auth v], R [auth W], T [auth Z], V [auth c], X [auth f], Z [auth i]	266	Escherichia coli	Mutation(s): 0  Gene Names: trwF
UniProt
Find proteins for O50336 (Escherichia coli) Explore O50336  Go to UniProtKB:  O50336

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 2.69 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX	1.18.2_3874:
RECONSTRUCTION	cryoSPARC

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-06-19 
Deposition Author(s): Mace, K., Waksman, G.

---

Funding Organization	Location	Grant Number
Wellcome Trust	United Kingdom	098302
Wellcome Trust	United Kingdom	217089
Wellcome Trust	United Kingdom	202679/Z/16/Z
Wellcome Trust	United Kingdom	206166/Z/17/Z

Revision History  

• Version 1.0: 2024-06-19
  Type: Initial release