Predicted to enable GTPase binding activity and cardiolipin binding activity. Involved in several processes, including mitochondrial ATP synthesis coupled proton transport; positive regulation of interleukin-2 production; and stress-induced mitochondrial fusion. Located in mitochondrion. Is extrinsic component of plasma membrane. Orthologous to human STOML2 (stomatin like 2). [provided by Alliance of Genome Resources, Apr 2022]