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Linking DNA-binding proteins to their recognition sequences by using protein microarrays.


ABSTRACT: Analyses of whole-genome sequences and experimental data sets have revealed a large number of DNA sequence motifs that are conserved in many species and may be functional. However, methods of sufficient scale to explore the roles of these elements are lacking. We describe the use of protein arrays to identify proteins that bind to DNA sequences of interest. A microarray of 282 known and potential yeast transcription factors was produced and probed with oligonucleotides of evolutionarily conserved sequences that are potentially functional. Transcription factors that bound to specific DNA sequences were identified. One previously uncharacterized DNA-binding protein, Yjl103, was characterized in detail. We defined the binding site for this protein and identified a number of its target genes, many of which are involved in stress response and oxidative phosphorylation. Protein microarrays offer a high-throughput method for determining DNA-protein interactions.

SUBMITTER: Ho SW 

PROVIDER: S-EPMC1502558 | biostudies-literature | 2006 Jun

REPOSITORIES: biostudies-literature

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Linking DNA-binding proteins to their recognition sequences by using protein microarrays.

Ho Su-Wen SW   Jona Ghil G   Chen Christina T L CT   Johnston Mark M   Snyder Michael M  

Proceedings of the National Academy of Sciences of the United States of America 20060619 26


Analyses of whole-genome sequences and experimental data sets have revealed a large number of DNA sequence motifs that are conserved in many species and may be functional. However, methods of sufficient scale to explore the roles of these elements are lacking. We describe the use of protein arrays to identify proteins that bind to DNA sequences of interest. A microarray of 282 known and potential yeast transcription factors was produced and probed with oligonucleotides of evolutionarily conserve  ...[more]

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