Sequence Ontology

A shared vocabulary for biological sequence features and annotations

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PAC

SO:0000154

Definition: The P1-derived artificial chromosome are DNA constructs that are derived from the DNA of P1 bacteriophage. They can carry large amounts (about 100-300 kilobases) of other sequences for a variety of bioengineering purposes. It is one type of vector used to clone DNA fragments (100- to 300-kb insert size; average, 150 kb) in Escherichia coli cells.

Comments and references

This term is mapped to MGED. Do not obsolete without consulting MGED ontology. Drosophila melanogaster PACs carry an average insert size of 80 kb. The library represents a 6-fold coverage of the genome.

Definition references: http://en.wikipedia.org/wiki/P1-derived_artificial_chromosome

Synonyms

ScopeValue
exactP1
exactP1 artificial chromosome

Identifiers and subsets

Accession: SO:0000154

Persistent URL: http://purl.obolibrary.org/obo/SO_0000154

Alternate IDs: None

Subsets: None

Cross references: http://en.wikipedia.org/wiki/P1-derived_artificial_chromosome

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: 2016-12-05 in commit 92e3cae

Number of changes: 1

Ontology neighborhood diagram

Ontology neighborhood for SO:0000154 Ontology neighborhood graph for SO:0000154 PAC. Parent, child, and related nodes can be activated to open their term pages. SO:0000440 vector_replicon SO:0000440 vector_replicon SO:0000154 PAC SO:0000154 PAC SO:0001480 PAC_end SO:0001480 PAC_end
The local DAG shows nearby parent, child, and related terms. Each node links to its own term page.

Relationships

Parents

Children

None recorded in the current release neighborhood.

http://purl.obolibrary.org/obo/so#part_of (incoming)

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
2016-12-05createdTerm introduced into the editable ontology history
Initial label: PAC
Initial definition captured.
Initial parent: SO:0000440
92e3cae