7PKW

Crystal structure of VIRB8-like OrfG central and C-terminal domains of Streptococcus thermophilus ICESt3 (Gram positive conjugative type IV secretion system).

• PDB DOI: https://doi.org/10.2210/pdb7PKW/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Streptococcus thermophilus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2021-08-27 Released: 2022-09-07 
• Deposition Author(s): Favier, F., Didierjean, C., Cappele, J., Douzi, B., Leblond-Bourget, N.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.83 Å
• R-Value Free: 0.215 
• R-Value Work: 0.183 
• R-Value Observed: 0.185 

Literature

Crystal structure of VIRB8-like OrfG central and C-terminal domains of Streptococcus thermophilus ICESt3 (Gram positive conjugative type IV secretion system).

Favier, F., Didierjean, C., Cappele, J., Douzi, B., Leblond-Bourget, N.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Homo 3-mer - A3 

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

Macromolecule Content

• Total Structure Weight: 31.16 kDa 
• Atom Count: 2,335 
• Modelled Residue Count: 240 
• Deposited Residue Count: 268 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Putative transfer protein	A	268	Streptococcus thermophilus	Mutation(s): 0
UniProt
Find proteins for Q70CA4 (Streptococcus thermophilus) Explore Q70CA4  Go to UniProtKB:  Q70CA4

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	B [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
GOL	C [auth A], D [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.83 Å
• R-Value Free: 0.215 
• R-Value Work: 0.183 
• R-Value Observed: 0.185 
• Space Group: P 4₁ 3 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 124.92	α = 90
b = 124.92	β = 90
c = 124.92	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
Aimless	data scaling
MOLREP	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2022-09-07 
Deposition Author(s): Favier, F., Didierjean, C., Cappele, J., Douzi, B., Leblond-Bourget, N.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2022-09-07
  Type: Initial release
  
• Version 1.1: 2024-01-31
  Changes: Data collection, Refinement description