2.1.1.64 membrane associated. In vivo, the methyltransferase reaction probably occurs at the internal surface of the cytoplasmic membrane 16020 485507 2.1.1.64 membrane the membrane-binding region of UbiG gates the entrance of methyl donor 16020 758360 2.1.1.64 mitochondrion - 5739 485508 2.1.1.64 mitochondrion the Coq3 polypeptide is peripherally associated with the matrix side of the inner membrane of yeast mitochondria 5739 485140