Term Name:	guanine catabolic process
Synonyms:	guanine breakdown, guanine catabolism, guanine degradation
Definition:	The chemical reactions and pathways resulting in the breakdown of guanine, 2-amino-6-hydroxypurine, a purine that is one of the five main bases found in nucleic acids and a component of a number of phosphorylated guanosine derivatives whose metabolic or regulatory functions are important.
Ontology:	GO: Biological Process [GO:0006147]    QuickGO    AmiGO