title: Selective recognition of sulfate anions by a cyclopeptide-derived receptor in aqueous phosphate buffer.
abstract: A cyclopeptide-based anion receptor containing alternating 6-aminopicolinic acid and substituted (4R)-4-aminoproline subunits with appended β-alanine residues binds sulfate anions in water. Importantly, appreciable sulfate binding is even observed in phosphate buffer, hence in the presence of anions of similar structure but with a different degree of protonation. The cause for the high selectivity of this receptor is related to the mode of action of the sulfate-binding protein.
authors.affiliation: Fachbereich Chemie - Organische Chemie, Technische Universität Kaiserslautern , Erwin-Schrödinger-Strasse, D-67663 Kaiserslautern, Germany, and Departamento de Química, Inorgánica, Universidad de Valencia , Instituto de Ciencia Molecular, C/Catedrático José Beltrán 2, 46980, Paterna (Valencia), Spain.
authors.forename: Astrid
authors.initials: A
authors.lastname: Schaly
authors.forename: Raquel
authors.initials: R
authors.lastname: Belda
authors.forename: Enrique
authors.initials: E
authors.lastname: García-España
authors.forename: Stefan
authors.initials: S
authors.lastname: Kubik
mesh_terms: D000838:Anions / Q000737:chemistry; D002021:Buffers; D008958:Models, Molecular; D015394:Molecular Structure; D010456:Peptides, Cyclic / Q000737:chemistry*; D010710:Phosphates / Q000737:chemistry*; D013431:Sulfates / Q000737:chemistry*; D014867:Water / Q000737:chemistry
chemical_list: D000838:Anions; D002021:Buffers; D010456:Peptides, Cyclic; D010710:Phosphates; D013431:Sulfates; D014867:Water