title: Combined biotin-terpyridine systems: a new versatile bridge between biology, polymer science and metallo-supramolecular chemistry.
abstract: Biotin, a well-known binding unit for the proteins avidin and streptavidin, was combined with the chelating ligand terpyridine via polymeric and nonpolymeric spacers. An omega-amino-functionalized terpyridyl-poly(ethylene glycol) was prepared and utilized for complex formation with iron(II), nickel(II), and ruthenium(II) ions. The biocompatibility of the complex formation was investigated in aqueous media. Moreover, biotin was functionalized with a methoxy-poly(ethylene glycol) as a model system. The compounds were characterized by UV/vis and NMR spectroscopy as well as MALDI-TOF mass spectrometry. The systems represent a new combination of strong noncovalent binding units from both biology and synthetic supramolecular chemistry.
authors.affiliation: Laboratory of Macromolecular Chemistry and Nanoscience, Eindhoven University of Technology, PO Box 513, 5600 MB, The Netherlands.
authors.forename: Harald
authors.initials: H
authors.lastname: Hofmeier
authors.forename: Jörg
authors.initials: J
authors.lastname: Pahnke
authors.forename: Christian H
authors.initials: CH
authors.lastname: Weidl
authors.forename: Ulrich S
authors.initials: US
authors.lastname: Schubert
mesh_terms: D001710:Biotin / Q000032:analysis / Q000138:chemical synthesis*; D001952:Bridged-Ring Compounds / Q000032:analysis / Q000138:chemical synthesis; D009942:Organometallic Compounds / Q000032:analysis / Q000138:chemical synthesis; D011108:Polymers / Q000032:analysis / Q000138:chemical synthesis*; D011725:Pyridines / Q000032:analysis / Q000138:chemical synthesis*
chemical_list: D001952:Bridged-Ring Compounds; D009942:Organometallic Compounds; D011108:Polymers; D011725:Pyridines; D001710:Biotin