axially filamented

METPO:1000705 · CLASS · REVIEWED

A motility where the flagellum filament of an organism is located in the periplasm and does not extend past the cell envelope.

Axial filament periplasmic flagella mechanism

Evidence-backed causal sketch linking axial filament motility to periplasmic flagella, basal motors, cell-envelope localization, torque, and corkscrew-like cell movement.

Axial filament periplasmic flagella mechanism Interactive directed graph showing evidence-backed causal relationships for axially filamented.

Edge evidence

  • periplasmic flagella defines axially filamented METPO:2007500

    Axial filamented motility is defined by flagella located inside the periplasmic space.

    • DOI:10.3390/biom10040550 flagella are hidden within the periplasmic space Supports periplasmic flagella as the defining structure.
  • periplasmic flagella localized in periplasmic space biolink:located_in

    Spirochete flagella reside inside the cell envelope rather than extending externally.

    • DOI:10.1016/j.semcdb.2015.10.015 enclose their flagella in the periplasm Supports periplasmic localization of spirochete flagella.
  • flagellar basal motor rotates periplasmic flagella

    Basal motors drive periplasmic flagellar rotation.

    • DOI:10.3390/biom10040550 connects with a basal motor Supports basal motor linkage to periplasmic flagella.
  • torque generation depends on flagellar basal motor RO:0002502

    Spirochete-specific motor structures generate torque needed for motility.

    • DOI:10.1128/mBio.02494-21 generation of the high torque necessary Supports torque generation by spirochete flagellar motor structures.
  • periplasmic flagella enables corkscrew motility RO:0002327

    Periplasmic flagella drive cell-body undulation or corkscrew-like movement.

    • DOI:10.1016/j.semcdb.2015.10.015 long, helical appendages known as flagella to move Supports motility by periplasmic flagella in spirochetes.
  • corkscrew motility realizes axially filamented

    Corkscrew or undulating movement is the observed locomotion phenotype of axial filament systems.

    • DOI:10.3390/biom10040550 mechanics of spirochete motility Supports cell-body mechanics as the phenotype-level expression of periplasmic flagella.
  • FlbB periplasmic ring forms ring around flagellar rotor

    FlbB forms a novel periplasmic ring around the flagellar rotor, a structural scaffold for the spirochete motor.

    • DOI:10.1371/journal.ppat.1012812 "FlbB forms a novel periplasmic ring around the rotor"; broadly applicable to spirochetes with FlbB homologs.
  • FlbB periplasmic ring recruits stator complex

    The FlbB-based collar scaffold supports recruitment of torque-generating stator complexes around the rotor.

    • DOI:10.1371/journal.ppat.1012812 "acts as a scaffold supporting collar assembly and subsequent recruitment of stator complexes"
  • stator complex generates torque generation biolink:produces

    Ion-powered stator complexes generate the torque that drives periplasmic flagellar rotation.

    • DOI:10.1371/journal.ppat.1012812 "bridges the rotor and 16 torque-generating stator complexes in each flagellar motor"; stators are the torque-generating units.
  • periplasmic flagella contributes to wavy / flat-wave cell morphology RO:0002326

    Periplasmic flagella establish the wavy/flat-wave cell morphology, acting like a cytoskeleton.

    • DOI:10.3390/biom10040550 "Another important role of the PF is to establish a wavy morphology, similar to a cytoskeleton"

Provenance

Source
METPO (2025-11-25)
Author
Luke Wang
Definition source
DOI:10.3390/biom10040550

Parent traits (1)

Synonyms (1)

  • axial filament RELATED_SYNONYM · metpo.owl

kg-microbe context

Matched 1 kg-microbe node via direct_metpo.

  • METPO:1000705 [-1.207, -3.411, -0.763, +0.835, …]

512-dim DeepWalkSkipGramEnsmallen embedding from kg-microbe (2026-04-25).

Nearest neighbors in embedding space

Top-8 cosine-similar METPO traits from the 2026-04-25 deepwalk (512-D).

Curation history

  1. · SEEDED_FROM_METPO · seed_from_metpo

    imported from data/raw/metpo.owl (CLASS)

  2. · CURATED_WITH_LITERATURE · codex

    Reviewed axially filamented trait and added DOI-backed causal graph for periplasmic flagella, basal motors, torque generation, and spirochete corkscrew motility.

  3. · GROUND_CAUSAL_PREDICATES · claude

    Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (RO:0002327×1).

  4. · GROUND_CAUSAL_PREDICATES · claude

    Grounded 2 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (biolink:located_in×1, RO:0002502×1).

  5. · GROUND_CAUSAL_NODES · claude

    Grounded 1 causal-node grounding field(s) via mappings/node_grounding.tsv (GO:0042597×1).

  6. · GROUND_CAUSAL_PREDICATES · claude

    Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (METPO:2007500×1).

  7. · ENRICH_CAUSAL_GRAPH · claude

    Added 4 evidence-backed generic edges (4 new nodes) from the deep-research report.

  8. · GROUND_CAUSAL_PREDICATES · claude

    Grounded 2 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (biolink:produces×1, RO:0002326×1).