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Figure 1.
Figure 1. The WW domain sequences and classes. Amino acid
sequence of selected WW domains grouped in classes according to
ligand specificity.4 Classes/ligand motifs: class II PPLPp
(magenta), class III (p/  )P(p/g)PPpR
or (p/ )PPRgpPp
(orange), class IV (poS/poT)P (green) and class I PPxY (blue).
Conserved amino acid residues are in bold; amino acid residues
on the b-strand face where binding occurs are grey-shaded; amino
acid residues responsible for class specificity are colored. The
asterisk (*) indicates sequences assumed to be FBP11 orthologs.
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