This family consists of several eukaryotic ATP11 proteins. In Saccharomyces cerevisiae, expression of functional F1-ATPase requires two proteins encoded by the ATP11 and ATP12 genes [1]. Atp11p is a molecular chaperone of the mitochondrial matrix that participates in the biogenesis pathway to form F1, the catalytic unit of the ATP synthase [2].

1: Characterization of ATP11 and detection of the encoded protein in mitochondria of Saccharomyces cerevisiae. Ackerman SH, Martin J, Tzagoloff A; J Biol Chem 1992;267:7386-7394. PMID:1532796

2: A purified subfragment of yeast Atp11p retains full molecular chaperone activity. Hinton A, Zuiderweg ER, Ackerman SH; J Biol Chem 2003;278:34110-34113. PMID:12829692