In animals, RNA binding proteins (RBPs) and microRNAs (miRNAs) 
post-transcriptionally regulate the expression of virtually all genes by binding 
to RNA. Recent advances in experimental and computational methods facilitate 
transcriptome-wide mapping of these interactions. It is thought that the 
combinatorial action of RBPs and miRNAs on target mRNAs form a 
post-transcriptional regulatory code. We provide a database that supports the 
quest for deciphering this regulatory code. Within doRiNA, we are systematically 
curating, storing and integrating binding site data for RBPs and miRNAs. Users 
are free to take a target (mRNA) or regulator (RBP and/or miRNA) centric view on 
the data. We have implemented a database framework with short query response 
times for complex searches (e.g. asking for all targets of a particular 
combination of regulators). All search results can be browsed, inspected and 
analyzed in conjunction with a huge selection of other genome-wide data, because 
our database is directly linked to a local copy of the UCSC genome browser. At 
the time of writing, doRiNA encompasses RBP data for the human, mouse and worm 
genomes. For computational miRNA target site predictions, we provide an update 
of PicTar predictions.