Spatial organization of the transcriptional regulatory network of Saccharomyces cerevisiae
2019
Sun, Dong‐Qing | Tian, Liu | Ma, Bin‐Guang
A transcriptional regulatory network (TRN) is a complex network composed of all of the regulatory interactions between transcription factors and the corresponding target genes. Recently, three‐dimensional (3D) genomic studies have shown that the 3D structure of the genome may influence the regulation of gene transcription, which provides us with a novel perspective. In the present study, we constructed the TRN of the budding yeast Saccharomyces cerevisiae and placed it in the context of a 3D genome model. We analyzed the spatial organization of the yeast TRN on four levels: global features, central nodes, hierarchical structure and network motifs. The results obtained suggest that the TRN of S. cerevisiae presents an optimized structure in space to adapt to functional requirements.
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