4H8F | pdb_00004h8f

Crystal structure of a parallel 4-helix coiled coil CC-Hex-II- 22

• PDB DOI: https://doi.org/10.2210/pdb4H8F/pdb

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


• Deposited: 2012-09-22 Released: 2014-02-05 
• Deposition Author(s): Chi, B., Zaccai, N.R., Brady, R.L., Woolfson, D.N.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.88 Å
• R-Value Free: 
  0.243 (Depositor), 0.240 (DCC) 
• R-Value Work: 
  0.207 (Depositor), 0.210 (DCC) 
• R-Value Observed: 
  0.209 (Depositor) 

Starting Model: experimental

Literature

TBA

Chi, B., Zaccai, N.R., Brady, R.L., Woolfson, D.N.

(null) J Am Chem Soc 

Biological Assembly 1  

Global Symmetry: Cyclic - C4  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content 

• Total Structure Weight: 7.28 kDa 
• Atom Count: 571 
• Modeled Residue Count: 66 
• Deposited Residue Count: 66 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CC-Hex-II-Phi22	A, B	33	synthetic construct	Mutation(s): 0

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	D [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
TBU	C [auth A], E [auth A], F [auth B]	TERTIARY-BUTYL ALCOHOL C4 H10 O DKGAVHZHDRPRBM-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
PHI	A, B	L-PEPTIDE LINKING	C9 H10 I N O2		PHE

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.88 Å
• R-Value Free:  0.243 (Depositor), 0.240 (DCC) 
• R-Value Work:  0.207 (Depositor), 0.210 (DCC) 
• R-Value Observed: 0.209 (Depositor) 

Space Group: P 4₁ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 46.67	α = 90
b = 46.67	β = 90
c = 94.06	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
PHENIX	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-02-05 
Deposition Author(s): Chi, B., Zaccai, N.R., Brady, R.L., Woolfson, D.N.

Revision History  

• Version 1.0: 2014-02-05
  Type: Initial release
  
• Version 1.1: 2019-07-17
  Changes: Data collection, Derived calculations, Refinement description
• Version 1.2: 2023-09-20
  Changes: Data collection, Database references, Derived calculations, Refinement description