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 

wwPDB Validation 3D Report Full Report


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

  • 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 bun ...

    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

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ATP synthase alpha chain
A
22Escherichia coli O157:H7Gene Names: atpA
EC: 3.6.3.14
Find proteins for P0ABB2 (Escherichia coli O157:H7)
Go to UniProtKB:  P0ABB2
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
ATP synthase delta chain
B
134Escherichia coli O157:H7Gene Names: atpH
Find proteins for P0ABA5 (Escherichia coli O157:H7)
Go to UniProtKB:  P0ABA5
Experimental Data & Validation

Experimental Data

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

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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