D-Arabinono-1,4-lactone oxidase; catalyzes the final step in biosynthesis of dehydro-D-arabinono-1,4-lactone, which is protective against oxidative stress; putative adaptor protein that interacts with the cargo-binding domain of Myo2p and has a role in mitochondrial inheritance, especially under conditions of oxidative stress; localizes to the mitochondrial outer membrane; null mutant shows improved noncanonical amino acid incorporation efficiency in response to the amber (TAG) stop codon