The review describes integrated experimental and computer approaches to the investigation of the mechanisms of transcriptional regulation of the organization of eukaryotic genes and transcription regulatory regions. These include (a) an analysis of the factors affecting the affinity of TBP (TATA-binding protein) for the TATA box; (b) research on the patterns of chromatin mark distributions and their role in the regulation of gene expression; (c) a study of 3D chromatin organization; (d) an estimation of the effects of polymorphisms on gene expression via high-resolution Chip-seq and DNase-seq techniques. It was demonstrated that integrated experimental and computer approaches are very important for the current understanding of transcription regulatory mechanisms and the structural and functional organization of the regulatory regions controlling transcription.