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  • Title: Disulfide linkage in the coiled-coil domain of subunit H of A1AO ATP synthase from Methanocaldococcus jannaschii and the NMR structure of the C-terminal segment H(85-104).
    Author: Gayen S, Grüber G.
    Journal: FEBS Lett; 2010 Feb 19; 584(4):713-8. PubMed ID: 20026332.
    Abstract:
    The C-terminal residues 98-104 are important for structure stability of subunit H of A(1)A(O) ATP synthases as well as its interaction with subunit A. Here we determined the structure of the segment H(85-104) of H from Methanocaldococcus jannaschii, showing a helix between residues Lys90 to Glu100 and flexible tails at both ends. The helix-helix arrangement in the C-terminus was investigated by exchange of hydrophobic residues to single cysteine in mutants of the entire subunit H (H(I93C), H(L96C) and H(L98C)). Together with the surface charge distribution of H(85-104), these results shine light into the A-H assembly of this enzyme.
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