Welcome to the RNAz web server. It will help you to detect thermodynamically stable and evolutionarily conserved RNA secondary structures in multiple sequence alignments.

Simply paste or upload your alignment(s) below and click Proceed. The system will suggest reasonable default values for all options. To get more information on the meaning of the options click the symbols or read the help pages. You can test the server using this sample alignment.

If you like to analyze alignments covering whole genomic regions use the Genomic screen modus.

Paste your alignment(s) here: Paste one or more alignments into this field. You can choose between the following formats: CLUSTALW, FASTA, PHYLIP, NEXUS, MAF, and XMFA. You can paste at most 1000 lines into this field.	[clear]
Or upload a file: Upload a file containing one or more alignments in the following formats: CLUSTALW, FASTA, PHYLIP, NEXUS, MAF, and XMFA. The file size for upload is limited to 20 MB.
Format: Select the format of your alignment(s). Automatic will try to guess the correct format. Valid alignment formats are: CLUSTALW, FASTA, PHYLIP, NEXUS, MAF, and XMFA. If you upload more than one alignment all alignments must be of the same format.
AutomaticCLUSTALWFASTANEXUSPHYLIPMAF