prospore septin filament array

GO:0032165 · Cytoskeleton · Filament · Proposed

Arrays of septin filaments, or bars, found in a series of filamentous structures; observed in the prospore membrane during spore formation. [GO:0032165]

UniProt location names: UniProt Consortium, CC BY 4.0. Reference label and route sources.

Components

Component	Type	Part of / acts on	Grounding	Genes	Stoichiometry	Essential	Role
septin proteins	Protein	part of	Reviewed label only (reviewed name; no accession asserted)			ESSENTIAL	Septin GTPases that polymerize into filament bars arranged as the prospore septin filament array. `GO:0032165` GO:0032165 defines the structure as arrays of septin filaments or bars.

Mechanism graphs

Prospore septin-filament-array topology (ASSEMBLY)

Septin proteins form filament bars arranged as a prospore septin filament array at the prospore membrane during spore formation.

Subject	Predicate	Object	Evidence
septin proteins	assemble into	prospore septin filament array	`GO:0032165` GO:0032165 defines the array as septin filaments or bars.
prospore septin filament array	is observed in	prospore membrane	`GO:0032165` GO:0032165 localizes the septin filament array to the prospore membrane during spore formation.

Discussions

INTERPRETATION (RESOLVED): Keep the prospore septin filament array distinct from the generic septin filament array and other prospore septin structures. GO:0032165 denotes the prospore-membrane-localized child of the generic GO:0032160 septin filament array. GO:0032166 covers the parallel chlamydospore-membrane array, and GO:0032169 covers a tight ring-shaped septin structure at the site of cytokinesis in a prospore rather than a filamentous array in the prospore membrane.
CURATION_TODO (OPEN): Resolve an exact source-neutral grounding for prospore-septin-filament-array septin proteins. The initial prospore septin filament array record uses a reviewed-label-only septin protein cohort rather than guessing InterPro, Pfam, or NCBIfam accessions that may not exactly delimit all septins that form prospore membrane filament arrays.

Evidence

GO:0032165 Gene Ontology cellular-component term for the prospore septin filament array.
GO:0032160 OLS reports GO:0032160 septin filament array as the direct GO:0032165 parent.

Curation history

2026-09-30T15:28:42Z codex · CREATED_RECORD — Scaffolded by scripts/new_record.py
2026-09-30T15:29:38Z codex · EXPANDED_RECORD — Added septin-filament-array parentage, a reviewed-label-only septin constituent, a nonmechanistic GO-backed prospore-membrane topology graph, and boundary and component-grounding discussions.

Source: data/structures/cytoskeleton/prospore_septin_filament_array.yaml