Predicted to contribute to proton-transporting ATP synthase activity, rotational mechanism. Predicted to be involved in proton motive force-driven mitochondrial ATP synthesis and proton transmembrane transport. Located in mitochondrion. Is expressed in several structures, including Malpighian tubule main body primordium; Malpighian tubule primordium; embryonic/larval midgut primordium; gut section; and larval somatic muscle cell. Orthologous to human ATP5MF (ATP synthase membrane subunit f).