1MAG

GRAMICIDIN A IN HYDRATED DMPC BILAYERS, SOLID STATE NMR


Experimental Data Snapshot

  • Method: SOLID-STATE NMR
  • Conformers Submitted: 

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

  • DOI: 10.1007/BF00198135
  • Primary Citation of Related Structures:  
    1MAG

  • 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 samples uniformly aligned with respect to the B(0) field ...

    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: 
    • 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
    • Lipid-Peptide Interface: Valine Conformation and Dynamics in the Gramicidin Channel
      Lee, K.C., Huo, S., Cross, T.A.
      (1995) Biochemistry 34: 857
    • 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
    • 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

    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 LengthOrganismDetailsImage
GRAMICIDIN AA, B16Brevibacillus brevisMutation(s): 0 
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
FVA
Query on FVA
A, BL-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, BGRAMICIDIN APolypeptide / Antibiotic Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLID-STATE NMR
  • Conformers Submitted: 
  • OLDERADO: 1MAG Olderado

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1997-01-11
    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: 2017-12-20
    Changes: Database references, Other
  • Version 1.6: 2018-03-14
    Changes: Data collection, Derived calculations, Refinement description