title: Multiplex selection technique (MuST): an approach to clone transcription factor binding sites.
abstract: We have used a multiplex selection approach to construct a library of DNA-protein interaction sites recognized by many of the DNA-binding proteins present in a cell type. An estimated minimum of two-thirds of the binding sites present in a library prepared from activated Jurkat T cells represent authentic transcription factor binding sites. We used the library for isolation of "optimal" binding site probes that facilitated cloning of a factor and to identify binding activities induced within 2 hr of activation of Jurkat cells. Since a large fraction of the oligonucleotides obtained appear to represent "optimal" binding sites for sequence-specific DNA-binding proteins, it is feasible to construct a catalog of consensus binding sites for DNA-binding proteins in a given cell type. Qualitative and quantitative comparisons of the catalogs of binding site sequences from various cell types could provide valuable insights into the process of differentiation acting at the level of transcriptional control.
authors.affiliation: Department of Genetics, Boyer Center for Molecular Medicine, Yale University School of Medicine, New Haven, CT 06511, USA.
authors.forename: G N
authors.initials: GN
authors.lastname: Nallur
authors.forename: K
authors.initials: K
authors.lastname: Prakash
authors.forename: S M
authors.initials: SM
authors.lastname: Weissman
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D001665:Binding Sites; D002460:Cell Line; D003001:Cloning, Molecular / Q000379:methods*; D016384:Consensus Sequence; D018076:DNA, Complementary; D016208:Databases, Factual; D015723:Gene Library; D006801:Humans; D008969:Molecular Sequence Data; D009838:Oligodeoxyribonucleotides; D015345:Oligonucleotide Probes; D010835:Phytohemagglutinins / Q000494:pharmacology; D016133:Polymerase Chain Reaction; D011518:Proto-Oncogene Proteins / Q000378:metabolism; D050783:Proto-Oncogene Proteins c-ets; D012689:Sequence Homology, Nucleic Acid; D013329:Structure-Activity Relationship; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology; D014157:Transcription Factors / Q000378:metabolism*; D014407:Tumor Cells, Cultured
chemical_list: D018076:DNA, Complementary; D009838:Oligodeoxyribonucleotides; D015345:Oligonucleotide Probes; D010835:Phytohemagglutinins; D011518:Proto-Oncogene Proteins; D050783:Proto-Oncogene Proteins c-ets; D014157:Transcription Factors; D013755:Tetradecanoylphorbol Acetate