2A7U

NMR solution structure of the E.coli F-ATPase delta subunit N-terminal domain in complex with alpha subunit N-terminal 22 residues


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 10 
  • Conformers Submitted: 
  • Selection Criteria: averaged minimized structure 

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This is version 1.2 of the entry. See complete history


Literature

Structural Characterization of the Interaction of the delta and alpha Subunits of the Escherichia coli F(1)F(0)-ATP Synthase by NMR Spectroscopy

Wilkens, S.Borchardt, D.Weber, J.Senior, A.E.

(2005) Biochemistry 44: 11786-11794

  • DOI: 10.1021/bi0510678
  • Primary Citation of Related Structures:  
    2A7U

  • PubMed Abstract: 
  • A critical point of interaction between F(1) and F(0) in the bacterial F(1)F(0)-ATP synthase is formed by the alpha and delta subunits. Previous work has shown that the N-terminal domain (residues 3-105) of the delta subunit forms a 6 alpha-helix bundle [Wilkens, S ...

    A critical point of interaction between F(1) and F(0) in the bacterial F(1)F(0)-ATP synthase is formed by the alpha and delta subunits. Previous work has shown that the N-terminal domain (residues 3-105) of the delta subunit forms a 6 alpha-helix bundle [Wilkens, S., Dunn, S. D., Chandler, J., Dahlquist, F. W., and Capaldi, R. A. (1997) Nat. Struct. Biol. 4, 198-201] and that the majority of the binding energy between delta and F(1) is provided by the interaction between the N-terminal 22 residues of the alpha- and N-terminal domain of the delta subunit [Weber, J., Muharemagic, A., Wilke-Mounts, S., and Senior, A. E. (2003) J. Biol. Chem. 278, 13623-13626]. We have now analyzed a 1:1 complex of the delta-subunit N-terminal domain and a peptide comprising the N-terminal 22 residues of the alpha subunit by heteronuclear protein NMR spectroscopy. A comparison of the chemical-shift values of delta-subunit residues with and without alpha N-terminal peptide bound indicates that the binding interface on the N-terminal domain of the delta subunit is formed by alpha helices I and V. NOE cross-peak patterns in 2D (12)C/(12)C-filtered NOESY spectra of the (13)C-labeled delta-subunit N-terminal domain in complex with unlabeled peptide verify that residues 8-18 in the alpha-subunit N-terminal peptide are folded as an alpha helix when bound to delta N-terminal domain. On the basis of intermolecular contacts observed in (12)C/(13)C-filtered NOESY experiments, we describe structural details of the interaction of the delta-subunit N-terminal domain with the alpha-subunit N-terminal alpha helix.


    Organizational Affiliation

    Departments of Biochemistry, University of California at Riverside, Riverside, California 92521, USA. stephan.wilkens@ucr.edu



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ATP synthase alpha chainA22N/AMutation(s): 0 
EC: 3.6.3.14
UniProt
Find proteins for P0ABB2 (Escherichia coli O157:H7)
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Go to UniProtKB:  P0ABB2
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
ATP synthase delta chainB134Escherichia coli O157:H7Mutation(s): 0 
Gene Names: atpHpapEuncHZ5233ECs4677
EC: 3.6.3.14
UniProt
Find proteins for P0ABA5 (Escherichia coli O157:H7)
Explore P0ABA5 
Go to UniProtKB:  P0ABA5
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 10 
  • Conformers Submitted: 
  • Selection Criteria: averaged minimized structure 
  • OLDERADO: 2A7U Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2005-10-11
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Source and taxonomy, Version format compliance