mitochondrial intermembrane space protein transporter complex | mitochondrial intermembrane space | organelle inner membrane | intracellular membrane-bounded organelle | mitochondrial inner membrane | organelle membrane | cell | cytoplasm | intracellular organelle | protein-containing complex | mitochondrial inner membrane protein insertion complex | mitochondrion | membrane-bounded organelle | organelle | mitochondrial envelope | membrane-enclosed lumen | mitochondrial membrane | intracellular | membrane