Construction and architecture of the YNA database. (a) The data collection of histone modifications, binding occupancy of histones and regulatory proteins. All of these datasets are converted to the corresponding regions of each gene. (b) The data collection of global gene information, which integrates expression data and functional categories. (c) The genome-wide gene miner is the query interface designed for users to retrieve genes that match the various filtering criteria. (d) The biological significance analyzer analyzes the characteristic tendency of these chromatin-regulating features shared by the retrieved genes.