FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

box H/ACA snoRNP complex

ID (Ontology)

GO:0031429 (Gene Ontology)

Definition

A box H/ACA small nucleolar ribonucleoprotein complex located in the nucleolus that catalyzes pseudouridylation of ribosomal RNA residues. The complex is composed of four different core proteins that assemble onto a H/ACA guide RNA scaffold that identifies specific uridines in rRNA for modification during ribosome synthesis.[ PubMed:17284456 PubMed:20227365 PubMed:22065625 ]

Also Known As

"box H/ACA small nucleolar ribonucleoprotein complex" ; "box H/ACA snoRNP pseudouridylase complex"

Comment

Links to External Ontologies

QuickGO data AmiGO data

Annotations

Records annotated with this term OR any of its CHILD TERMS

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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_CELLULAR_COMPONENT

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	Gene Groups	Genes
box H/ACA snoRNP complex (all annotations which use CV term, excluding "NOT" statements)
part_of \| box H/ACA snoRNP complex	--

Spanning Tree (Parents/Children)

nucleus
 |__nuclear protein-containing complex__________
sno(s)RNA-containing ribonucleoprotein complex  |
 |__box H/ACA RNP complex_______________________|
nuclear lumen                                   |
 |__nucleolus___________________________________|
protein-containing complex                      |
 |__nuclear protein-containing complex__________|
 |__catalytic complex___________________________|
intracellular membraneless organelle            |
 |__nucleolus___________________________________|
                                                box H/ACA snoRNP complex  5 rec.

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	box H/ACA RNP complex nuclear protein-containing complex catalytic complex
Part of	nucleolus
Synonyms & Secondary IDs
Synonyms
	"box H/ACA small nucleolar ribonucleoprotein complex" EXACT "box H/ACA snoRNP pseudouridylase complex" EXACT[ PubMed:17284456 ]
Secondary IDs

External Crossreferences & Linkouts