8B15 | pdb_00008b15

A pentameric barrel state of a de novo coiled-coil assembly: CC-Pent2-I10Q

• PDB DOI: https://doi.org/10.2210/pdb8B15/pdb

• Classification: DE NOVO PROTEIN
• Organism(s): synthetic construct
• Mutation(s): No 


• Deposited: 2022-09-09 Released: 2023-09-20 
• Deposition Author(s): Martin, F.J.O., Dawson, W.M., Woolfson, D.N.
• Funding Organization(s): European Research Council (ERC), Biotechnology and Biological Sciences Research Council (BBSRC), Engineering and Physical Sciences Research Council

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 
  0.247 (Depositor), 0.255 (DCC) 
• R-Value Work: 
  0.213 (Depositor), 0.220 (DCC) 
• R-Value Observed: 
  0.215 (Depositor) 

Starting Model: experimental

Literature

Exchange, promiscuity, and orthogonality in a set of de novo coiled-coil assemblies

Martin, F.J.O., Orr-Ewing, A.J., Dawson, W.M., Woolfson, D.N.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C5  (Explore in 3D)
Global Stoichiometry: Homo 5-mer - A5 

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

Biological Assembly Evidence: equilibrium centrifugation

Biological Assembly 2  

Global Symmetry: Cyclic - C5  (Explore in 3D)
Global Stoichiometry: Homo 5-mer - A5 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 33.7 kDa 
• Atom Count: 2,383 
• Modeled Residue Count: 287 
• Deposited Residue Count: 320 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CC-Pent2-I10Q	A, B, C, D, E, F, G, H, I, J [auth L]	32	synthetic construct	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free:  0.247 (Depositor), 0.255 (DCC) 
• R-Value Work:  0.213 (Depositor), 0.220 (DCC) 
• R-Value Observed: 0.215 (Depositor) 

Space Group: P 3₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 40.273	α = 90
b = 40.273	β = 90
c = 162.422	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
Aimless	data scaling
PHASER	phasing
PDB_EXTRACT	data extraction
xia2	data reduction

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2023-09-20 
Deposition Author(s): Martin, F.J.O., Dawson, W.M., Woolfson, D.N.

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Funding Organization	Location	Grant Number
European Research Council (ERC)	European Union	340764
Biotechnology and Biological Sciences Research Council (BBSRC)	United Kingdom	BB/L01386X/1
Engineering and Physical Sciences Research Council	United Kingdom	EP/G036764

Revision History  

• Version 1.0: 2023-09-20
  Type: Initial release
  
• Version 1.1: 2024-11-20
  Changes: Structure summary
• Version 1.2: 2026-03-04
  Changes: Refinement description