FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

pyrimidine nucleoside catabolic process

ID (Ontology)

GO:0046135 (Gene Ontology)

Definition

The chemical reactions and pathways resulting in the breakdown of one of a family of organic molecules consisting of a pyrimidine base covalently bonded to a sugar ribose (a ribonucleoside) or deoxyribose (a deoxyribonucleoside).

Also Known As

"pyrimidine nucleoside breakdown" ; "pyrimidine nucleoside catabolism" ; "pyrimidine nucleoside degradation"

Comment

Links to External Ontologies

QuickGO data AmiGO data

Annotations

Records annotated with this term OR any of its CHILD TERMS

Choose a record type to view annotations for this term and its child terms. Direct annotations and full annotation statements below also provide HitList buttons.

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Direct annotations: records annotated with this exact term (child terms are NOT included)

Data Class	Field	Direct annotations
Genes (FBgn)	GO_BIOLOGICAL_PROCESS

Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records

Full annotation statements	Relevant FlyBase reports
Full annotation statements	Genes
pyrimidine nucleoside catabolic process (all annotations which use CV term, excluding "NOT" statements)
involved_in \| pyrimidine nucleoside catabolic process

Spanning Tree (Parents/Children)

catabolic process
 |__pyrimidine-containing compound catabolic process____
nucleoside metabolic process                            |
 |__pyrimidine nucleoside metabolic process_____________|
 |__nucleoside catabolic process________________________|
nucleobase-containing small molecule catabolic process  |
 |__nucleoside catabolic process________________________|
pyrimidine-containing compound metabolic process        |
 |__pyrimidine nucleoside metabolic process_____________|
 |__pyrimidine-containing compound catabolic process____|
glycosyl compound catabolic process                     |
 |__nucleoside catabolic process________________________|
                                                        pyrimidine nucleoside catabolic process  9 rec.
                                                         |__blasticidin S catabolic process
                                                         |__pyrimidine deoxyribonucleoside catabolic process 3 rec.
                                                         |   |__deoxycytidine catabolic process 3 rec.
                                                         |   |__deoxyuridine catabolic process
                                                         |   |__thymidine catabolic process
                                                         |__pyrimidine ribonucleoside catabolic process 3 rec.
                                                             |__cytidine catabolic process
                                                             |__uridine catabolic process 3 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	pyrimidine nucleoside metabolic process nucleoside catabolic process pyrimidine-containing compound catabolic process
Part of
Synonyms & Secondary IDs
Synonyms
	"pyrimidine nucleoside breakdown" EXACT "pyrimidine nucleoside catabolism" EXACT "pyrimidine nucleoside degradation" EXACT
Secondary IDs

External Crossreferences & Linkouts
	Reactome:R-HSA-73621 "Pyrimidine catabolism"