Features and annotations

Features describe the biological or functional meaning of regions within a sequence.

Examples include genes, coding sequences, promoters, terminators, origins of replication, selectable markers, reporters, primer-binding sites, restriction sites, regulatory regions, operators, enhancers, signal peptides, and custom annotations.

Features belong to sequence versions

Feature coordinates are meaningful only against an exact sequence.

For that reason, annotations are associated with a specific sequence version rather than only with a plasmid name.

If the sequence changes, review the annotations for the new version.

Coordinates

Feature coordinates identify the region occupied by the annotation.

Feature: Constitutive promoter
Start: 1
End: 107
Strand: Forward

Coordinates must fall within the associated sequence.

Catalog summaries

When an approved sequence is released to a plasmid, selected feature information may also be surfaced as catalog summary metadata.

The feature record on the released sequence remains the precise annotation source.