Does Jalview work with nucleotide sequences and alignments?
Jalview does not currently include any special support for scoring or visualizing nucleotide sequence alignments. It can read, write and manipulate DNA sequences, but treats each symbol as an amino-acid rather than a nucleotide. Versions prior to 2.05b will not read and write RNA sequences containing uracil (U). Support for nucleotide sequences and score models will be provided in the next major Jalview release.