The structure of bovine F1-ATPase complexed with the antibiotic inhibitor aurovertin B.van Raaij, M.J., Abrahams, J.P., Leslie, A.G., Walker, J.E.
(1996) Proc.Natl.Acad.Sci.USA 93: 6913-6917
- PubMed: 8692918
- Also Cited By: 1EFR
- PubMed Abstract:
- Crystallization of F1-ATPase from Bovine Heart Mitochondria
Lutter, R.,Abrahams, J.P.,Van Raaij, M.J.,Todd, R.J.,Lundqvist, T.,Buchanan, S.K.,Leslie, A.G.,Walker, J.E.
(1993) J.Mol.Biol. 229: 787
- Inherent Asymmetry of the Structure of F1-ATPase from Bovine Heart Mitochondria at 6.5 A Resolution
Abrahams, J.P.,Lutter, R.,Todd, R.J.,Van Raaij, M.J.,Leslie, A.G.,Walker, J.E.
(1993) Embo J. 12: 1775
- Structure at 2.8 A Resolution of F1-ATPase from Bovine Heart Mitochondria
Abrahams, J.P.,Leslie, A.G.,Lutter, R.,Walker, J.E.
(1994) Nature 370: 621
In the structure of bovine mitochondrial F1-ATPase that was previously determined with crystals grown in the presence of adenylyl-imidodiphosphate (AMP-PNP) and ADP, the three catalytic beta-subunits have different conformations and nucleotide occupa ...
In the structure of bovine mitochondrial F1-ATPase that was previously determined with crystals grown in the presence of adenylyl-imidodiphosphate (AMP-PNP) and ADP, the three catalytic beta-subunits have different conformations and nucleotide occupancies. Adenylyl-imidodiphosphate is bound to one beta-subunit (betaTP), ADP is bound to the second (betaDP), and no nucleotide is bound to the third (betaE). Here we show that the uncompetitive inhibitor aurovertin B binds to bovine F1 at two equivalent sites in betaTP and betaE, in a cleft between the nucleotide binding and C-terminal domains. In betaDP, the aurovertin B pocket is incomplete and is inaccessible to the inhibitor. The aurovertin B bound to betaTP interacts with alpha-Glu399 in the adjacent alphaTP subunit, whereas the aurovertin B bound to betaE is too distant from alphaE to make an equivalent interaction. Both sites encompass betaArg-412, which was shown by mutational studies to be involved in binding aurovertin. Except for minor changes around the aurovertin pockets, the structure of bovine F1-ATPase is the same as determined previously. Aurovertin B appears to act by preventing closure of the catalytic interfaces, which is essential for a catalytic mechanism involving cyclic interconversion of catalytic sites.
Medical Research Council Laboratory of Molecular Biology, Cambridge, United Kingdom.