Example of COMPASS profile-profile alignment confirmed by a recently
solved 3D structure:
The header includes brief information about the hit,
followed by COMPASS score and E-value. In this example, the top and
consensus sequences for compared profiles are displayed. Position matches
with positive scores are marked by '+', identical residues in the two
consensus sequences are marked by the residue symbol. Invariant glutamates
of Motifs I and II involved in ligand binding by
S-adenosyl-l-methionine-dependent methyltransferases (SAM-Mtases) are
marked with red dots, glycine-rich motif is circled. Below: A recently
solved structure for a member of DUF185 family (PDB ID 1zkd) confirms our
prediction. Side chains of the invariant glutamate residues are shown in
red, glycine-rich loop is circled.