title: Covalent coupling of DNA oligonucleotides and streptavidin.
abstract: Semisynthetic DNA-protein conjugates are synthesized by covalent coupling of thiol-modified DNA oligonucleotides and streptavidin. The resulting conjugates have a binding capacity for four equivalents of biotin and one nucleic acid of complementary sequence. The conjugates are purified to homogeneity by ultrafiltration and chromatography and characterized by photometry and gel electrophoresis. Subsequently, the conjugates are applied as molecular linkers in the DNA-directed immobilization of a biotinylated enzyme on a microplate, containing complementary capture oligonucleotides.
authors.affiliation: Biologisch-Chemische Mikrostrukturtechnik, Fachbereich Chemie der Universität Dortmund, Germany.
authors.forename: Florian
authors.initials: F
authors.lastname: Kukolka
authors.forename: Marina
authors.initials: M
authors.lastname: Lovrinovic
authors.forename: Ron
authors.initials: R
authors.lastname: Wacker
authors.forename: Christof M
authors.initials: CM
authors.lastname: Niemeyer
mesh_terms: D003432:Cross-Linking Reagents; D009838:Oligodeoxyribonucleotides; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods; D040081:Protein Array Analysis / Q000379:methods; D019809:Streptavidin
chemical_list: D003432:Cross-Linking Reagents; D009838:Oligodeoxyribonucleotides; D019809:Streptavidin