Transcription factor modularity in a gene-centered C. elegans core neuronal protein-DNA interaction network
Authors
Vermeirssen, VanessaBarrasa, M. Inmaculada
Hidalgo, Cesar A.
Babon, Jenny Aurielle B.
Sequerra, Reynaldo
Doucette-Stamm, Lynn
Barabasi, Albert-Laszlo
Walhout, Albertha J. M.
Document Type
Journal ArticlePublication Date
2007-05-22Keywords
AnimalsCaenorhabditis elegans
Caenorhabditis elegans Proteins
DNA
DNA-Binding Proteins
Gene Expression Regulation
Genome
Mice
Nerve Tissue Proteins
Neurons
Open Reading Frames
Polymerase Chain Reaction
Promoter Regions (Genetics)
Saccharomyces cerevisiae
Transcription Factors
Life Sciences
Medicine and Health Sciences
Metadata
Show full item recordAbstract
Transcription regulatory networks play a pivotal role in the development, function, and pathology of metazoan organisms. Such networks are comprised of protein-DNA interactions between transcription factors (TFs) and their target genes. An important question pertains to how the architecture of such networks relates to network functionality. Here, we show that a Caenorhabditis elegans core neuronal protein-DNA interaction network is organized into two TF modules. These modules contain TFs that bind to a relatively small number of target genes and are more systems specific than the TF hubs that connect the modules. Each module relates to different functional aspects of the network. One module contains TFs involved in reproduction and target genes that are expressed in neurons as well as in other tissues. The second module is enriched for paired homeodomain TFs and connects to target genes that are often exclusively neuronal. We find that paired homeodomain TFs are specifically expressed in C. elegans and mouse neurons, indicating that the neuronal function of paired homeodomains is evolutionarily conserved. Taken together, we show that a core neuronal C. elegans protein-DNA interaction network possesses TF modules that relate to different functional aspects of the complete network. Y1H dataset can be found as a supplemental file to this paper. See Additional Files below.Source
Genome Res. 2007 Jul;17(7):1061-71. Epub 2007 May 18. Link to article on publisher's siteDOI
10.1101/gr.6148107Permanent Link to this Item
http://hdl.handle.net/20.500.14038/38396PubMed ID
17513831Related Resources
Link to Article in PubMedae974a485f413a2113503eed53cd6c53
10.1101/gr.6148107