Introduction
Clustal Omega is the latest addition to the Clustal family. It offers a significant increase in scalability over previous versions, allowing hundreds of thousands of sequences to be aligned in only a few hours. It will also make use of multiple processors, where present. In addition, the quality of alignments is superior to previous versions, as measured by a range of popular benchmarks.
A full description of the algorithms used by Clustal Omega is available in the Molecular Systems Biology paper Fast, scalable generation of high-quality protein multiple sequence alignments using Clustal Omega. Latest additions to Clustal Omega are described in Clustal Omega for making accurate alignments of many protein sequences. General notes on Multiple Sequence Alignment can be found in Sievers, Barton and Higgins, Multiple Sequence Alignment, Bioinformatics 227, pp 227-250, AD Baxevanis, GD Bader, DS Wishart (Eds).