1C4D

GRAMICIDIN CSCL COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.232 
  • R-Value Observed: 0.232 

wwPDB Validation   3D Report Full Report


This is version 1.5 of the entry. See complete history


Literature

The Gramicidin Pore: Crystal Structure of a Cesium Complex.

Wallace, B.A.Ravikumar, K.

(1988) Science 241: 182

  • DOI: 10.1126/science.2455344
  • Primary Citation of Related Structures:  
    1C4D

  • PubMed Abstract: 
  • Gramicidin, a linear polypeptide composed of hydrophobic amino acids with alternating L- and D- configurations, forms transmembrane ion channels. The crystal structure of a gramicidin-cesium complex has been determined at 2.0 angstrom resolution. In this structure, gramicidin forms a 26 angstrom long tube comprised of two polypeptide chains arranged as antiparallel beta strands that are wrapped into a left-handed helical coil with 6 ...

    Gramicidin, a linear polypeptide composed of hydrophobic amino acids with alternating L- and D- configurations, forms transmembrane ion channels. The crystal structure of a gramicidin-cesium complex has been determined at 2.0 angstrom resolution. In this structure, gramicidin forms a 26 angstrom long tube comprised of two polypeptide chains arranged as antiparallel beta strands that are wrapped into a left-handed helical coil with 6.4 residues per turn. The polypeptide backbone forms the interior of the hydrophilic, solvent-filled pore and the side chains form a hydrophobic and relatively regular surface on the outside of the pore. This example of a crystal structure of a solvent-filled ion pore provides a basis for understanding the physical nature of ion translocation.


    Related Citations: 
    • The Use of Single-Wavelength Anomalous Scattering to Solve the Crystal Structure of a Gramicidin A/ Caesium Chloride Complex
      Wallace, B.A., Hendrickson, W.A., Ravikumar, K.
      (1990) Acta Crystallogr B B46: 440

    Organizational Affiliation

    Department of Chemistry and Center for Biophysics, Rensselaer Polytechnic Institute, Troy, NY 12180.



Macromolecules
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GRAMICIDIN AA, B, C, D16Brevibacillus brevisMutation(s): 0 
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CS
Query on CS

Download Ideal Coordinates CCD File 
E [auth A], F [auth A], G [auth A], N [auth B], S [auth C], X [auth D], Y [auth D], Z [auth D]CESIUM ION
Cs
NCMHKCKGHRPLCM-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download Ideal Coordinates CCD File 
AA [auth D], H [auth A], I [auth A], O [auth B], T [auth C], U [auth C]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
MOH
Query on MOH

Download Ideal Coordinates CCD File 
BA [auth D] , CA [auth D] , DA [auth D] , EA [auth D] , J [auth A] , K [auth A] , L [auth A] , M [auth A] , 
BA [auth D], CA [auth D], DA [auth D], EA [auth D], J [auth A], K [auth A], L [auth A], M [auth A], P [auth B], Q [auth B], R [auth B], V [auth C], W [auth C]
METHANOL
C H4 O
OKKJLVBELUTLKV-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
FVA
Query on FVA
A, B, C, DL-PEPTIDE LINKINGC6 H11 N O3VAL
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 1
IDChainsNameType/Class2D Diagram3D Interactions
PRD_000150
Query on PRD_000150
A, B, C, DGRAMICIDIN APolypeptide / Antibiotic Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.232 
  • R-Value Observed: 0.232 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 32.118α = 90
b = 52.103β = 90
c = 31.174γ = 90
Software Package:
Software NamePurpose
PHASITmodel building
ASCALCmodel building
X-PLORrefinement
HANSONdata reduction
ANOSCLdata scaling
SCALE2data scaling
SCALE3data scaling
PHASITphasing
ASCALCphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

  • Deposited Date: 1999-06-04 
  • Released Date: 2000-01-03 
  • Deposition Author(s): Wallace, B.A.

Revision History  (Full details and data files)

  • Version 1.0: 2000-01-03
    Type: Initial release
  • Version 1.1: 2011-06-14
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2011-07-27
    Changes: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary
  • Version 1.4: 2012-12-12
    Changes: Other
  • Version 1.5: 2017-10-04
    Changes: Refinement description