Term Name:	tetrapyrrole metabolic process
Synonyms:	tetrapyrrole metabolism
Definition:	The chemical reactions and pathways involving tetrapyrroles, natural pigments containing four pyrrole rings joined by one-carbon units linking position 2 of one pyrrole ring to position 5 of the next.
Ontology:	GO: Biological Process [GO:0033013]    QuickGO    AmiGO