Figure 5. Ontology diagrams of proteins from P. gingivalis and M. maripaludis. (A) Ontology of the 60-kDa chaperonin GroEL (PG0520) from P. gingivalis. The position of GroEL is shown for two of the three ontologies in the Gene Ontology (http://www.geneontology.org/), Biological process and Molecular function. The light gray box represents the protein. All other boxes represent ontology terms. The arrows indicate category relationships. (B) Ontology of the protein N5-methyltetrahydromethanopterin: methyl transferase A (MtrA) (MMP1564) from M. maripaludis. The position of the methanogenesis protein MtrA, as given in GoMiner (http://discover.nci.nih.gov/gominer/), is shown for two of the three ontologies in the Gene Ontology, Biological process and Molecular function. The light gray box represents the protein. All other boxes represent ontology terms. The arrows indicate category relationships. Dashed lines and circled crosses indicate categories to which the protein was not assigned (see text discussion).