Sequence Ontology

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H_ACA_box_snoRNA

SO:0000594

Definition: 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.

Comments and references

Added 'SNORD' as a synonym of C_D_box_snoRNA (SO:0000593) and 'SNORA' as a synonym of H_ACA_box_snoRNA (SO:0000594). See GitHub Issue #577.

Definition references: http://www.bio.umass.edu/biochem/rna-sequence/Yeast_snoRNA_Database/snoRNA_DataBase.html

Synonyms

ScopeValue
exactH ACA box snoRNA
exactH/ACA box snoRNA
exactSNORA
exactbox H/ACA snoRNA

Identifiers and subsets

Accession: SO:0000594

Persistent URL: http://purl.obolibrary.org/obo/SO_0000594

Alternate IDs: None

Subsets: None

Cross references: None

History summary

Term history is reconstructed from the Git-era ontology files by comparing ontology classes across revisions. Earlier SVN-era changes will be added at a future date.

First seen in Git-era editable history: 2016-12-05 in commit 92e3cae

Most recent Git-era change: 2022-10-28 in commit f7115da

Number of changes: 2

Ontology neighborhood diagram

Ontology neighborhood for SO:0000594 Ontology neighborhood graph for SO:0000594 H_ACA_box_snoRNA. Parent, child, and related nodes can be activated to open their term pages. SO:0000275 snoRNA SO:0000275 snoRNA SO:0000594 H_ACA_box_snoRNA SO:0000594 H_ACA_box_snoRNA SO:0001187 pseudouridylation_guide_snoRNA SO:0001187 pseudouridylation_guide_snoRNA SO:0000596 H_ACA_box_snoRNA_primary_transcript SO:0000596 H_ACA_box_snoRNA_primary_transcript
The local DAG shows nearby parent, child, and related terms. Each node links to its own term page.

Relationships

Parents

Children

http://purl.obolibrary.org/obo/so#derives_from (outgoing)

Change history

This timeline summarizes changes identified in SO’s GitHub commit history, including updates to labels, definitions, parent terms, synonyms, subsets, and obsoletion status. It is a best-effort reconstruction and may not include every change to a term. Since only history from GitHub is included at the moment, any term added before the migration from SVN to Git will show as being created in 2016. This will be addressed once SVN history is incorporated.

DateChangeSummaryEvidence
2022-10-28synonym addedSynonym added: SNORA
Scope: exact
f7115da
#577
2016-12-05createdTerm introduced into the editable ontology history
Initial label: H_ACA_box_snoRNA
Initial definition captured.
Initial parent: SO:0000275
92e3cae