FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

rRNA (cytosine-C5-)-methyltransferase activity

ID (Ontology)

GO:0009383 (Gene Ontology)

Definition

Catalysis of the transfer of a methyl group from S-adenosyl-L-methionine to cytosine to form 5-methylcytosine in small subunit ribosomal RNA.[ PubMed:10026269 PubMed:18786544 ]

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.

Results list data from multiple species. Choose a record type above to open its HitList.

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

Data Class	Field	Direct annotations
Genes (FBgn)	GO_MOLECULAR_FUNCTION

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
rRNA (cytosine-C5-)-methyltransferase activity (all annotations which use CV term, excluding "NOT" statements)
enables \| rRNA (cytosine-C5-)-methyltransferase activity

Spanning Tree (Parents/Children)

methyltransferase activity
 |__C-methyltransferase activity________________
rRNA methyltransferase activity                 |
 |__rRNA (cytosine) methyltransferase activity__|
                                                rRNA (cytosine-C5-)-methyltransferase activity  5 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	C-methyltransferase activity rRNA (cytosine) methyltransferase activity
Part of
Synonyms & Secondary IDs
Synonyms
	"rRNA (cytosine-C5-967)-methyltransferase activity" NARROW "rRNA m5C967 methyltransferase activity" NARROW
Secondary IDs

External Crossreferences & Linkouts
	Reactome:R-HSA-6790944 "NOP2 (NSUN1) methylates cytidine-4447 of 28S rRNA yielding 5-methylcytidine-4447" Reactome:R-HSA-6793057 "NSUN4 methylates cytidine-841 of 12S rRNA yielding 5-methylcytidine-841"