The paper describing Clustal V came out earlier this year in CABIOS: Higgins, D.G., Bleasby, A.J. and Fuchs, R. (1992) CLUSTAL V: improved software for multiple sequence alignment. Computer Applications in the Biosciences (CABIOS), 8(2):189-191. Des Higgins European Molecular Biology Laboratory Heidelberg Germany Higgins at EMBL-Heidelberg.DE