UCNEbase - A database for ultraconserved noncoding elements and genomic regulatory blocks (Release version 1.0.1 - March 2023)

UCNEbase provides information on the evolution and genomic organization of ultra-conserved non-coding elements (UCNEs) in multiple vertebrate species. It currently covers 4351 such elements in 18 different species. Around half of these elements are located within intergenic regions (2'139) and the rest are located within non-coding parts of genes: introns (1'713) and UTRs (499). The majority of UCNEs are supposed to be transcriptional regulators of key developmental genes. Detailed description of the resource can be found in the UCNEbase_doc.pdf file included in this directory.