citrate fermentation

traitmech:000182 · CLASS · PROPOSED

A fermentation in which citrate is the primary fermentable substrate.

Trait evidence (2)

DOI:10.1128/JB.183.18.5248-5256.2001
Klebsiella pneumoniae is able to grow anaerobically with citrate as a sole carbon and energy source by a fermentative pathway

Meyer et al. provide direct Klebsiella pneumoniae evidence for anaerobic growth on citrate through a fermentative pathway.
DOI:10.1186/1471-2180-9-168
Not all, but nearly half of the K. pneumoniae clinical isolates carry the genes responsible for anaerobic growth on citrate.

Chen et al. found citrate-growth gene clusters in clinical K. pneumoniae isolates, supporting K. pneumoniae as a canonical citrate fermenter with strain-level variation.

Provenance

Identifier source: TraitMech local identifier
Definition source: DOI:10.1128/JB.183.18.5248-5256.2001

Parent traits (1)

Fermentation METPO:1002005

kg-microbe context

No kg-microbe node embedding matched this record in the 2026-04-25 deepwalk.

Canonical examples (1)

Organisms cited as exemplars of this trait. Taxon ids are NCBITaxon and link out to the NCBI record.

Klebsiella pneumoniae NCBITaxon:573 DOI:10.1186/1471-2180-9-168 Chen et al. and Meyer et al. both studied anaerobic citrate fermentation in K. pneumoniae strains.

Discussions and Knowledge Gaps (1)

Open questions attached to this trait. Seeded by just knowledge-gap-scan and curated; see the corpus-wide index.

Resolve an exact external ontology class for citrate fermentation before adding a TraitRecord xref.

CURATION TODO OPEN citrate-fermentation-xref-gap · raised by codex · 2026-09-14

Not yet attached to a section of this record — a curator sets attaches_to (e.g. causal_graphs#some_edge) so the gap shows beside the mechanism it concerns.

No exact GO or external metabolism class was resolved for anaerobic citrate fermentation; generic citrate metabolic process terms, citrate lyase or transporter molecular functions, and citrate-test assay terms are shifted relative to this pathway-scoped fermentation class.

Curation history

2026-09-14T04:09:24Z · MINTED_TRAITMECH_ID · codex
Minted citrate fermentation as a DOI-backed TraitRecord after a repository-wide duplicate review covering ignored and hidden files; METPO has no exact anaerobic citrate fermentation class yet and the placeholder is reserved in proposals/metpo_traitmech_v59.
2026-09-14T04:38:10Z · CURATION_REVIEW_REVISION · codex
Resolved PR #894 review issue #897 by narrowing the minted record from citrate utilization to pathway-scoped citrate fermentation.