septin filament array

GO:0032160 · Cytoskeleton · Filament · Proposed

Arrays of septin filaments, or bars, found in a series of filamentous structures. Such structures have been observed in the prospore membrane during spore formation in S. cerevisiae and in the chlamydospore membrane during chlamydospore formation in C. albicans. [GO:0032160]

Part of: GO:0005856 — cytoskeleton (no local record)

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 bars or filaments and are arranged as filamentous arrays. `GO:0032160` GO:0032160 defines septin filament arrays as arrays of septin filaments or bars.

Taxonomic distribution

NCBITaxon:4932 Saccharomyces cerevisiae — VARIABLE: Saccharomyces cerevisiae septin filament arrays occur at the prospore membrane during sporulation rather than throughout all vegetative and meiotic cell-cycle states. [GO:0032160]
NCBITaxon:5476 Candida albicans — VARIABLE: Candida albicans septin filament arrays occur at the chlamydospore membrane during chlamydospore formation. [GO:0032160]

Canonical examples

NCBITaxon:4932 Saccharomyces cerevisiae — Budding-yeast model in which the GO definition records septin filament arrays at the prospore membrane during spore formation. [GO:0032160]
NCBITaxon:5476 Candida albicans — Candida model in which the GO definition records septin filament arrays at the chlamydospore membrane during chlamydospore formation. [GO:0032160]

Mechanism graphs

Septin-filament-array topology (ASSEMBLY)

Septin proteins form filament bars that are arranged as arrays at sporulation and chlamydospore-formation membranes.

Subject	Predicate	Object	Evidence
septin proteins	assemble into	septin filament array	`GO:0032160` GO:0032160 defines the array as septin filaments or bars.
septin filament array	is found at	prospore membrane	`GO:0032160` GO:0032160 cites prospore-membrane septin filament arrays in S. cerevisiae.
septin filament array	is found at	chlamydospore membrane	`GO:0032160` GO:0032160 cites chlamydospore-membrane septin filament arrays in C. albicans.

Discussions

INTERPRETATION (RESOLVED): Keep the generic septin filament array distinct from prospore and chlamydospore septin filament array subtypes. GO:0032160 denotes the generic array of septin filaments or bars. GO:0032165 and GO:0032166 are exact child terms for prospore- and chlamydospore-localized arrays, whereas GO:0005940, GO:0032173, and GO:0032159 model ring-shaped, collar-shaped, and cap-shaped higher-order septin structures.
CURATION_TODO (OPEN): Resolve exact source-neutral family groundings for septin-filament-array septin proteins. The first generic 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 can form filament arrays.

Evidence

GO:0032160 Gene Ontology cellular-component term for the septin filament array.
GO:0032156 — septin cytoskeleton Gene Ontology cellular-component parent term for the septin cytoskeleton.
GO:0005856 — cytoskeleton OLS reports a direct GO:0032160 part_of relation to the cytoskeleton.
GO:0032165 Gene Ontology cellular-component child term for the prospore septin filament array.
GO:0032166 Gene Ontology cellular-component child term for the chlamydospore septin filament array.

Curation history

2026-09-30T12:53:46Z codex · CREATED_RECORD — Scaffolded by scripts/new_record.py
2026-09-30T12:54:59Z codex · EXPANDED_RECORD — Added septin-cytoskeleton parentage, cytoskeleton parthood, a reviewed-label-only septin constituent, Saccharomyces and Candida example contexts, GO-backed septin-array topology, and boundary and component-grounding discussions.
2026-09-30T13:11:32Z codex · ADDRESSED_REVIEW — Resolved #1826 from PR #1825 by removing unread PMID:16151244 evidence and citing GO:0032160 for the Saccharomyces and Candida canonical example contexts.

Source: data/structures/cytoskeleton/septin_filament_array.yaml