70-kDa peroxisomal membrane protein related protein (P70R/ABCD4) localizes to endoplasmic reticulum not peroxisomes, and NH2-terminal hydrophobic property determines the subcellular localization of ABC subfamily D proteins.
Kashiwayama Y, Seki M, Yasui A, Murasaki Y, Morita M, Yamashita Y, Sakaguchi M, Tanaka Y, Imanaka T. Exp Cell Res. 2009 Jan 15; 315(2):190-205. Epub 2008 Nov 3.