ellipsoidal
METPO:1000673 · CLASS · REVIEWED
A cell shape in which an organism has an oval or ellipse morphology, elongated along one axis with rounded ends, intermediate between spherical and rod-shaped.
Ellipsoidal ovococcal elongation mechanism
Edge evidence
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PBP2b
promotes
peripheral peptidoglycan
RO:0002213PBP2b promotes peripheral wall synthesis in ovococcal elongation.
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DOI:10.1089/mdr.2014.0032PBP2b of ovococci
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DivIVA
regulates
septal and peripheral peptidoglycan synthesis
RO:0002211DivIVA regulates septal cleavage and peripheral peptidoglycan synthesis during ovococcal morphogenesis.
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DOI:10.1128/mbio.01311-24peripheral peptidoglycan synthesis
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peripheral peptidoglycan
contributes to
ellipsoid geometry
RO:0002326Peripheral wall insertion contributes to elongation of the ellipsoidal cell body.
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DOI:10.1128/mbio.01311-24septum cleavage and peripheral peptidoglycan synthesis
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septal and peripheral peptidoglycan synthesis
causes
ellipsoid geometry
biolink:causesCoordinated septal and peripheral synthesis shapes the ellipsoidal cell body.
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DOI:10.1016/j.cub.2021.04.041dynamics of peptidoglycan assembly
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ellipsoid geometry
manifests as
ellipsoidal
METPO:2007400Ellipsoid cell-body geometry manifests the ellipsoidal trait.
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DOI:10.1089/mdr.2014.0032ovococci that are ellipsoid
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divisome (FtsZ/PBP2x/FtsW)
carries out
septal peptidoglycan synthesis
The divisome (FtsZ/bPBP2x/FtsW) carries out septal PG synthesis.
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DOI:10.1111/mmi.14659
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elongasome (PBP2b/RodA)
carries out
peripheral peptidoglycan synthesis
The elongasome (bPBP2b/RodA plus Rod complex) carries out peripheral PG synthesis.
-
DOI:10.1111/mmi.14659
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PBP2b
required for
peripheral peptidoglycan synthesis
PBP2b is indispensable for lateral/peripheral PG synthesis and elongasome function.
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DOI:10.1111/mmi.13543
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spatial separation of septal and peripheral PG rings
enables
combined septal and peripheral PG synthesis
RO:0002327Spatial separation of inner sPG and outer pPG rings enables concurrent septal and peripheral synthesis underlying ellipsoidal shape.
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DOI:10.1111/mmi.14659
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undecaprenyl phosphate (Und-P)
preferentially required for
septal peptidoglycan synthesis
Septal PG synthesis is more sensitive to Und-P limitation than peripheral synthesis, so Und-P limitation favors elongation.
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DOI:10.7554/eLife.75607
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combined septal and peripheral PG synthesis
results in
ellipsoidal
Ovococcal/ellipsoidal shape results from combined use of septal and peripheral PG synthesis.
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DOI:10.1038/nrmicro3088
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Provenance
- Source
- METPO (2025-11-25)
- Author
- Luke Wang
- Definition source
- DOI:10.1089/mdr.2014.0032
Parent traits (1)
kg-microbe context
Matched 1 kg-microbe node via direct_metpo.
METPO:1000673[-1.999, -1.383, -2.615, +0.176, …]
Nearest neighbors in embedding space
- morphology crescent shaped 0.812
- morphology tetrad arrangement 0.803
- morphology cell shape 0.803
- morphology sarcina arrangement 0.803
- morphology staphylococcus arrangement 0.803
- morphology streptococcus arrangement 0.803
- morphology diplococcus shaped 0.795
- morphology dumbbell shaped 0.775
Curation history
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·
SEEDED_FROM_METPO · seed_from_metpo
imported from data/raw/metpo.owl (CLASS)
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·
CURATED_WITH_LITERATURE · codex
Added DOI-backed definition and causal graph for PBP2b, DivIVA, peripheral peptidoglycan, coordinated septal/peripheral wall synthesis, and ellipsoid geometry.
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·
GROUND_CAUSAL_PREDICATES · claude
Grounded 2 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (RO:0002211×1, RO:0002326×1).
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·
GROUND_CAUSAL_PREDICATES · claude
Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (METPO:2007400×1).
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·
RENAME_PREDICATE_LABELS · claude
Renamed 1 causal-edge predicate label(s) to align with existing groundings: shapes → causes ×1.
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·
GROUND_CAUSAL_PREDICATES · claude
Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (biolink:causes×1).
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·
GROUND_CAUSAL_NODES · claude
Grounded 2 causal-node grounding field(s) via mappings/node_grounding.tsv (UniProtKB:A0A892RPK7×1, UniProtKB:Q1IYG2×1).
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·
GROUND_CAUSAL_PREDICATES · claude
Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (RO:0002213×1).
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·
REMOVE_REDUNDANT_SYNONYM · claude
Removed 1 synonym(s) whose text duplicated the label (seeder redundancy; no information lost).
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·
ENRICH_CAUSAL_GRAPH · claude
Added 6 evidence-backed generic edges (7 new nodes) from the deep-research report.
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·
GROUND_CAUSAL_PREDICATES · claude
Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (RO:0002327×1).