An Integrated Sequence-Structure Database incorporating matching mRNA sequence, amino acid sequence and protein three-dimensional structure data. - Ivan A. Adzhubei; Alexei A. Adzhubei; Stephen Neidle (Nucleic Acids Res., 1998)

ISSD Version 2.0: taxonomic range extended. - Ivan A. Adzhubei; Alexei A. Adzhubei (Nucleic Acids Res., 1999)