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Published byElijah Grant Modified over 9 years ago
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The TRANSFAC ® System comprises 7 databases: TRANSFAC ® Professional Suite TRANSFAC ® Professional Transcription factor database TRANSCompel ® Professional Composite elements database PathoDB ® Professional Pathologically altered transcription factors TRANSPRO™ Professional Collection of human promoter sequences S/MARt DB™ Professional Scaffold or Matrix Attached Regions databases Cytomer ® Ontology of cells, structures, organs TRANSPATH ® Professional Signal transduction pathways
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One function – many structures (There‘s more then one way to do it) One structure – many functions (Multipurpose structure of promoters) Composite modules
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organ, tissue, cell stage of development cell cycle phase extracellular signals Composite modules encode gene expression pattern
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human TNF promoter mast cells T-cells + ? dendritic cells T-cells -107-74 NFAT AP-1 NF-kB C/EBP AP-1 VDR
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gherllojunomd-bype Genny fasltow Several regulatory messages could be written in the same sequence. Reading of the messages depends on the cellular context 1) 2) 3)
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Composite modules w... Start of transcription... Parameters of the model to be estimated K - number of TF matrixes
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Extract promoters from TRANSPRO Run TRANSPLORER Run CMFinder (Composite Module Finder) Select matrices Find corresponding TFs in TRANSFAC Run ArrayAnalyser in TRANSPATH to find key molecules Composite modules
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Search for most probable binding sites regulating gene expression
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Fuzzy puzzle hypothesis of the multipurpose structure of the eukaryotic promoters: of coding multiple regulatory messages in the same DNA sequence. A,B,C and D,E,F – two sets of TF; 1,2 – two sites in DNA; BC – basal complex.
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