1amt: Difference between revisions

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{{STRUCTURE_1amt|  PDB=1amt  |  SCENE=  }}  
{{STRUCTURE_1amt|  PDB=1amt  |  SCENE=  }}  


'''A VOLTAGE-GATED ION CHANNEL MODEL INFERRED FROM THE CRYSTAL STRUCTURE OF ALAMETHICIN AT 1.5-ANGSTROMS RESOLUTION'''
===A VOLTAGE-GATED ION CHANNEL MODEL INFERRED FROM THE CRYSTAL STRUCTURE OF ALAMETHICIN AT 1.5-ANGSTROMS RESOLUTION===




==Overview==
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The crystal structure of alamethicin in nonaqueous solvent has been determined, and refined at 1.5-A resolution. The molecular conformation of the three crystallographically independent molecules is largely alpha-helical with a bend in the helix axis at an internal proline residue. The helix structure is highly amphipathic as most of the solvent-accessible polar atoms lie on a narrow strip of surface parallel to the helix axis. Molecular models for the voltage-gated ion channel, with n-fold symmetry and based on the molecular conformations observed in the crystal, are characterized by strong surface complementarity, a hydrophilic interior and a hydrophobic exterior. The channel structures are stabilized by a hydrated annulus of hydrogen-bonded glutamine residues which produce the greatest restriction in the channel diameter.
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{{ABSTRACT_PUBMED_6292726}}


==About this Structure==
==About this Structure==
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[[Category: Richards, F M.]]
[[Category: Richards, F M.]]
[[Category: Peptide antibiotic]]
[[Category: Peptide antibiotic]]
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