1MAG

GRAMICIDIN A IN HYDRATED DMPC BILAYERS, SOLID STATE NMR

Experimental Data Snapshot

  • Method: SOLID-STATE NMR
  • Conformers Submitted: 1 

wwPDB Validation 3D Report Full Report


This is version 1.6 of the entry. See complete history. 

Literature

Macromolecular Structural Elucidation with Solid-State NMR-Derived Orientational Constraints.

Ketchem, R.R., Lee, K.C., Huo, S., Cross, T.A.

(1996) J.Biomol.NMR 8: 1


  • PubMed Abstract: 

    • The complete structure determination of a polypeptide in a lipid bilayer environment is demonstrated built solely upon orientational constraints derived from solid-state NMR observations. Such constraints are obtained from isotopically labeled sample ...

    The complete structure determination of a polypeptide in a lipid bilayer environment is demonstrated built solely upon orientational constraints derived from solid-state NMR observations. Such constraints are obtained from isotopically labeled samples uniformly aligned with respect to the B(0) field. Each observation constrains the molecular frame with respect to B(0) and the bilayer normal, which are arranged to be parallel. These constraints are not only very precise ( a few tenths of a degree), but also very accurate. This is clearly demonstrated as the backbone structure is assembled sequentially and the i to i + 6 hydrogen bonds in this structure of the gramicidin channel are shown on average to be within 0.5 A of ideal geometry. Similarly, the side chains are assembled independently and in a radial direction from the backbone. The lack of considerable atomic overlap between side chains also demonstrates the accuracy of the constraints. Through this complete structure, solid-state NMR is demonstrated as an approach for determining three-dimensional macromolecular structure.

    Related Citations: 
    • Lipid-Peptide Interface: Valine Conformation and Dynamics in the Gramicidin Channel
      Lee, K.C.,Huo, S.,Cross, T.A.
      (1995) Biochemistry 34: 857
    • Computational Refinement Through Solid State NMR and Energy Constraints of a Membrane Bound Polypeptide
      Ketchem, R.R.,Roux, B.,Cross, T.A.
      (1996) Biological Membranes: A Molecular Perspective from Computation and Experiment --: 299
    • High-Resolution Conformation of Gramicidin a in a Lipid Bilayer by Solid-State NMR
      Ketchem, R.R.,Hu, W.,Cross, T.A.
      (1993) Science 261: 1457
    • Tryptophan Dynamics and Structural Refinement in a Lipid Bilayer Environment: Solid State NMR of the Gramicidin Channel
      Hu, W.,Lazo, N.D.,Cross, T.A.
      (1995) Biochemistry 34: 14138

    Organizational Affiliation: 

    Center for Interdisciplinary Magnetic Resonance, Institute of Molecular Biophysics, Tallahassee, FL, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GRAMICIDIN A
A, B
16N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Biologically Interesting Molecules 1 Unique
IDChainsNameType/Class2D Diagram3D Interactions
PRD_000150
Query on PRD_000150		A,BGRAMICIDIN APolypeptide / Antibiotic

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Experimental Data & Validation

Experimental Data

  • Method: SOLID-STATE NMR
  • Conformers Submitted: 1 

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-01-11
    Type: Initial release
  • Version 1.1: 2011-06-14
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2011-07-27
    Type: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary
  • Version 1.4: 2012-12-12
    Type: Other
  • Version 1.5: 2017-12-20
    Type: Database references, Other
  • Version 1.6: 2018-03-14
    Type: Data collection, Derived calculations, Refinement description