S .. ... a database of structures of DNA-protein and RNA-protein complexes. ... a program for finding hydrophobic clusters in 3D structures of macromolecules . ... search of conserved hydrophobic clusters in aligned 3D structures of protein families . ... a program for analysis of multiple alignments . ... a program for automatic detection of aligned blocks in a multiple protein alignment. ... a program for detection of aligned blocks in a multiple alignment of sequences of PDB chains. ...