As a component of the mitochondrial small ribosomal subunit, it plays a role in the translation of mitochondrial mRNAs (PubMed:39701103). Involved in mediating interferon-gamma-induced cell death (PubMed:7499268). Displays GTPase activity in vitro (PubMed:39701103). {ECO:0000269|PubMed:39701103, ECO:0000269|PubMed:7499268}. This is the function of Ensembl gene identifier ENSG00000132676 (DAP3, death associated protein 3).