FB2026_03 , released September 17, 2026

CV Term Report

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General Information

Term

H_ACA_box_snoRNA_gene

ID (Ontology)

SO:0002376 (Sequence Ontology)

Definition

A gene that codes for H_ACA_box_snoRNA. Members of the box H/ACA family contain an ACA triplet, exactly 3 nt upstream from the 3' end and an H-box in a hinge region that links two structurally similar functional domains of the molecule. Both boxes are important for snoRNA biosynthesis and function. A few box H/ACA snoRNAs are involved in rRNA processing; most others are known or predicted to participate in selection of uridine nucleosides in rRNA to be converted to pseudouridines. Site selection is mediated by direct base pairing of the snoRNA with rRNA through one or both targeting domains.[ PubMed:12457565 PubMed:22065625 ]

Also Known As

"box H/ACA snoRNA gene, H ACA box snoRNA gene, H/ACA box snoRNA gene"

Comment

Links to External Ontologies

SO.org

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)	FEATURE_TYPE
Genes (FBgn)	SO_TERMS

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
H_ACA_box_snoRNA_gene (all annotations which use CV term, excluding "NOT" statements)

Spanning Tree (Parents/Children)

  sncRNA_gene
   |__snoRNA_gene
       |__H_ACA_box_snoRNA_gene  138 rec.
           |__pseudouridylation_guide_snoRNA_gene

Spanning Tree View Settings
Parents/Children View Depth	Show hierarchy levels: for parents, for children
Relationships
Is a	snoRNA_gene
Part of
Synonyms & Secondary IDs
Synonyms
	"box H/ACA snoRNA gene, H ACA box snoRNA gene, H/ACA box snoRNA gene" EXACT
Secondary IDs

External Crossreferences & Linkouts