CLUSTAL W: improving the sensitivity of progressive multiple sequence alignment through sequence weighting, position-specific gap penalties and weight matrix choice.
Nucleic Acids Res. 1994 Nov 11;22(22):4673-80. doi: 10.1093/nar/22.22.4673.
Nucleic Acids Res. 1994.
PMID: 7984417
Free PMC article.