1OB7

Cephaibol C


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.89 Å
  • R-Value Free: 0.077 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal Structures of Cephaibols

Bunkoczi, G.Schiell, M.Vertesy, L.Sheldrick, G.M.

(2003) J.Pept.Sci. 9: 745

  • DOI: 10.1002/psc.496
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The crystal structures of the peptaibol antibiotics cephaibol A, cephaibol B and cephaibol C have been determined at ca. 0.9 A resolution. All three adopt a helical conformation with a sharp bend (of about 55 degrees) at the central hydroxyproline. A ...

    The crystal structures of the peptaibol antibiotics cephaibol A, cephaibol B and cephaibol C have been determined at ca. 0.9 A resolution. All three adopt a helical conformation with a sharp bend (of about 55 degrees) at the central hydroxyproline. All isovalines were found to possess the D configuration, superposition of all four models (there are two independent molecules in the cephaibol B structure) shows that the N-terminal helix is rigid and the C-terminus is flexible. There are differences in the hydrogen bonding patterns for the three structures that crystallize in different space groups despite relatively similar unit cell dimensions, but only in the case of cephaibol C does the packing emulate the formation of a membrane channel believed to be important for their biological function.


    Organizational Affiliation

    Lehrstuhl für Strukturchemie, Georg-August Universität, Tammannstr. 4, 37077 Göttingen, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CEPHAIBOL C
A
17N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
EOH
Query on EOH

Download SDF File 
Download CCD File 
A
ETHANOL
C2 H6 O
LFQSCWFLJHTTHZ-UHFFFAOYSA-N
 Ligand Interaction
Biologically Interesting Molecules 1 Unique
IDChainsNameType/Class2D Diagram3D Interactions
PRD_000158
Query on PRD_000158
ACephaibol CPeptaibol / Antibiotic

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.89 Å
  • R-Value Free: 0.077 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 9.002α = 90.00
b = 28.619β = 90.00
c = 41.100γ = 90.00
Software Package:
Software NamePurpose
SADABSdata scaling
SHELXL-97refinement
SAINTdata reduction
SHELXDphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-12-11
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Atomic model, Database references, Derived calculations, Structure summary, Version format compliance
  • Version 1.2: 2012-11-30
    Type: Other
  • Version 1.3: 2018-05-30
    Type: Data collection