Abstract
Over the past few years, the transcriptional regulation of gene expression was intensively studied in the Gram-positive model organism Corynebacterium glutamicum to shed light on its gene regulatory repertoire and the architecture of its transcriptional regulatory network. The combination of several computational methods revealed a set of at least 159 regulatory proteins, which form the minimal transcriptional regulatory repertoire of the type strain C. glutamicum ATCC 13032. Most of these regulatory proteins have a direct role as a DNA-binding transcription regulator or sigma factor, while others have less well-defined functions in transcriptional regulation. Considerable information on 88 transcription regulators has been accumulated and stored in the online reference database CoryneRegNet, leading to a data set of more than 1,000 interactions between regulatory proteins and their target genes. Based on this comprehensive collection of gene-regulatory data, we have achieved great improvements in understanding the regulatory and coregulatory interactions of the various transcription regulators, their connection by hierarchical cross-regulation, and the topology of the transcriptional regulatory network. The genome-wide reconstruction of the transcriptional regulatory network with the graph visualization feature of CoryneRegNet reveals a highly connected architecture that displays a modular and hierarchical structure without feedback regulation at the transcriptional level.
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Schröder, J., Tauch, A. (2013). The Transcriptional Regulatory Network of Corynebacterium glutamicum . In: Yukawa, H., Inui, M. (eds) Corynebacterium glutamicum. Microbiology Monographs, vol 23. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-29857-8_8
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