The recent updates of the UCbase include new annotation based on the hg19 human genome; it does not provide microRNAs (a small single-stranded non-coding RNA molecule) information anymore, focusing only on UCRs.
Recent updates include new annotation based on hg19 Human genome, information about disorders related to the chromosome coordinates using the SNOMED CT classification, a query tool to search for SNPs, and a new text box to directly interrogate the database using a MySQL interface. UCbase 2.0 does not provide microRNAs (miRNAs) information anymore focusing only on UCRs. A microRNA (abbreviated miRNA) is a small non-coding RNA molecule (containing about 22 nucleotides) found in plants, animals and some viruses, that functions in RNA silencing and post-transcriptional regulation of gene expression. The miR-92 microRNAs are short single stranded non-protein coding RNA fragments initially discovered incorporated into an RNP complex with a proposed role of processing RNA molecules and further RNP assembly. 
