Wang ZG, et al. (2000) The alpha-subunit of the mitochondrial F(1) ATPase interacts directly with the assembly factor Atp12p. EMBO J 19(7):1486-93
Abstract: The Atp12p protein of Saccharomyces cerevisiae is required for the assembly of the F(1) component of the mitochondrial F(1)F(0) ATP synthase. In this report, we show that the F(1) alpha-subunit co-precipitates and co-purifies with a tagged form of Atp12p adsorbed to affinity resins. Moreover, sedimentation analysis indicates that in the presence of the F(1) alpha-subunit, Atp12p behaves as a particle of higher mass than is observed in the absence of the alpha-subunit. Yeast two-hybrid screens confirm the direct association of Atp12p with the alpha-subunit and indicate that the binding site for the assembly factor lies in the nucleotide-binding domain of the alpha-subunit, between Asp133 and Leu322. These studies provide the basis for a model of F(1) assembly in which Atp12p is released from the alpha-subunit in exchange for a beta-subunit to form the interface that contains the non-catalytic adenine nucleotide-binding site.
|Status: Published||Type: Journal Article||PubMed ID: 10747017|
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