Figure 1.

Alternative representations. PDB protein domain 1hlm00, a globin from the sea cucumber Caudina arenicola, the only protein common to the Chew-Kedem data set (CK-36-PDB and SP-86-PDB: amino acid sequence in FASTA format; CK-36-REL: complete TOPS string, with contact map; CK-36-SEQ: TOPS string of secondary structure elements) and Sierk-Pearson data set (SP-86-ATOM: ATOM lines from the PDB entry).