Abstract
Gene network is a group of genes functioning in a coordinated manner to control vital processes in an organism. Each gene network includes several essential components: (1) a group of genes which form a core of a gene network, (2) proteins encoded by these genes, (3) signal transduction pathways, (4) negative and positive feedback which provide for autoregulation, and (5) low-molecular-weight compounds. To accumulate the information on gene networks, a database GeneNet has been developed (http://wwwmgs.bionet.nsc.ru/systems/mgl/genet/). At present, GeneNet contains the data on 16 gene networks which are arranged in six sections according to the subject concerned: lipid metabolism, steroidogenesis, erythropoiesis, antiviral response, plant seed development, and heat shock. Analysis of these data revealed the following principles of the gene network organization: (1) there is a great variety of molecular mechanisms which provide for a feedback regulation; (2) each gene network includes key genes which coordinate the function of the other genes of the gene network; (3) one transcription factor activates many genes via a cassette mechanism; and (4) gene networks are autoregulated via regulatory circuits with positive and negative feedback.
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Kolchanov, N.A., Anan’ko, E.A., Kolpakov, F.A. et al. Gene networks. Mol Biol 34, 449–460 (2000). https://doi.org/10.1007/BF02759554
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DOI: https://doi.org/10.1007/BF02759554