Genetic reconstruction of a functional transcriptional regulatory network.
Although global analyses of transcription factor binding provide one view of potential transcriptional regulatory networks, regulation also occurs at levels distinct from transcription factor binding. Here, we use a genetic approach to identify targets of transcription factors in yeast and reconstruct a functional regulatory network. First, we profiled transcriptional responses in S. cerevisiae strains with individual deletions of 263 transcription factors. Then we used directed-weighted graph modeling and regulatory epistasis analysis to identify indirect regulatory relationships between these transcription factors, and from this we reconstructed a functional transcriptional regulatory network. The enrichment of promoter motifs and Gene Ontology annotations provide insight into the biological functions of the transcription factors.
Hu
Zhanzhi
Z
Center for Systems and Synthetic Biology, Institute for Cellular and Molecular Biology, Section of Molecular Genetics and Microbiology, University of Texas at Austin, 1 University Station A4800, Austin, Texas 78712, USA.
Killion
Patrick J
PJ
Iyer
Vishwanath R
VR
D001483:Base Sequence; D004843:Epistasis, Genetic; D015870:Gene Expression; D020869:Gene Expression Profiling; D053263:Gene Regulatory Networks / Q000235:genetics*; D008957:Models, Genetic; D020411:Oligonucleotide Array Sequence Analysis; D011401:Promoter Regions, Genetic / Q000235:genetics; D012441:Saccharomyces cerevisiae / Q000235:genetics*; D012984:Software; D014157:Transcription Factors / Q000235:genetics* / Q000378:metabolism
D014157:Transcription Factors