Opal is software for aligning multiple biological sequences.

In benchmark tests, Opal aligns sequences with good accuracy. On DNA, accuracy is similar to that of MAFTT and Muscle; on protein, accuracy is similar to MAFFT, and better than Muscle. Details of the software are available in this paper (from the Proceedings of ISMB 2007).

URL of this page		http://opal.cs.arizona.edu
OPAL Software Terms of Use		Please read the terms and accept them before downloading the distribution.
Distribution		opal.tgz
Citation		Wheeler, T.J. and Kececioglu, J.D. "Multiple alignment by aligning alignments," Proceedings of the 15th ISCB Conference on Intelligent Systems for Molecular Biology, Bioinformatics 23, i559-i568, 2007. (PDF)
Contact		opal _ at _ cs.arizona.edu
Authors		Travis Wheeler and John Kececioglu