The serpin B/C sheet query substructure found in a serpin from a thermophilic prokaryote. (a) 3D cartoon of the strands in the serpin B/C sheet from PDB identifier 1QLP used as the query structure. (b) 3D cartoon of a serpin from a thermophilic prokaryote, SCOP identifier d1mtp.1, one of the top 10 hits to this query structure. SSEs from each structure that are found to be corresponding according to our method have the same color. Both cartoons were generated with PyMOL.