title: A novel variant of mouse MATE-1 H+/organic cation antiporter with a long hydrophobic tail.
abstract: Mammalian multidrug and toxic compound extrusion 1 (MATE1) are polyspecific H+-coupled exporters of organic cations (OCs) and responsible for excretion of metabolic waste products and xenobiotics. Here, we report a novel variant of mouse MATE1, mMATE1b, that has a long carboxyl terminal hydrophobic tail homologous to other MATE1 transporter proteins. Mouse MATE1b mediates tetraethylammonium (TEA) uptake with properties similar to that of mMATE1 and is localized in renal brush border membranes. Thus, mMATE1b is a functional variant of mMATE1 and seems to be the true counterpart to other MATE1 transporters.
authors.affiliation: Department of Membrane Biochemistry, Okayama University, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Tsushima-1-1-1, Okayama 700-8530, Japan.
authors.forename: Ayumi
authors.initials: A
authors.lastname: Kobara
authors.forename: Miki
authors.initials: M
authors.lastname: Hiasa
authors.forename: Takuya
authors.initials: T
authors.lastname: Matsumoto
authors.forename: Masato
authors.initials: M
authors.lastname: Otsuka
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Omote
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Moriyama
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002412:Cations; D002460:Cell Line; D016368:Frameshift Mutation; D006801:Humans; D051379:Mice; D008871:Microvilli / Q000378:metabolism; D008957:Models, Genetic; D008969:Molecular Sequence Data; D027701:Organic Cation Transport Proteins / Q000737:chemistry* / Q000235:genetics* / Q000502:physiology; D017434:Protein Structure, Tertiary; D019789:Tetraethylammonium / Q000493:pharmacokinetics; D015262:Xenobiotics / Q000737:chemistry
chemical_list: D002412:Cations; C514424:MATE1 protein, mouse; D027701:Organic Cation Transport Proteins; D015262:Xenobiotics; D019789:Tetraethylammonium