2267736 mt-Keima mitochondria-targeted fluorescent protein Keima 3 2267733 mtKeima mitochondrial Keima 2 2267734 mt-Keima mito-Keima 1 2267735 mt-Keima Mitochondria-targeted Keima 1 2267732 mt-Keima mitochondrial-targeted form of the fluorescent reporter Keima 1