SPECIES · STRAIN AND FUNCTION PROFILE
Megasphaera cerevisiae
Validated caproate producer
Role labels distinguish demonstrated caproate production from community association; validate at strain level before causal interpretation.
Name, taxonomy and strain identifiers
Curation status: Ambiguous — review required · Taxon search · checked 2026-07-29. Multiple or strain-inexact BacDive candidates require curator selection. Candidate BacDive IDs: 17128, 17129.
Taxonomic record
- Scientific name
- Megasphaera cerevisiae
- Rank
- species
- NCBI Taxonomy
- Not resolved at this level
- Database role
- Validated caproate producer
Strain metadata needed
No evidence-linked strain profile has been curated. Genome assemblies below may represent several strains and must not be merged into a single phenotype.
Morphology and observable traits
| Strain | Gram stain | Cell shape | Motility | Spore formation | Colony morphology |
|---|---|---|---|---|---|
| No morphology observations curated. | |||||
Culture and growth conditions
| Strain | Medium | Temperature | pH | Atmosphere/result |
|---|---|---|---|---|
| No strain cultivation records curated. | ||||
Documented condition ranges
| Profile | pH | Temperature | Electron donors | Substrates/reactor |
|---|---|---|---|---|
| Species-level documented cultivation conditions | ?–?; optimum ? | 30.00–30.00 °C; optimum ? | Not curated | —; species-level culture records |
Physiology and metabolism
Documented substrates and products
Only approved assertions are shown. Results may be strain- and condition-specific.
| Relationship | Compound/source term | Evidence | Confidence | Condition |
|---|---|---|---|---|
| Product | short- and medium-chain carboxylates | Curator assertionExisting mcfaKB curator phenotype summaries | 0.800 | Not recorded |
| Substrate | carbohydrates | Curator assertionExisting mcfaKB curator phenotype summaries | 0.800 | Not recorded |
Predicted metabolic capabilities
Genome-derived hypotheses requiring review—not demonstrated substrates or products.
| Capability | Basis/status | Confidence | Assemblies | Limitation |
|---|---|---|---|---|
| No genome-derived capabilities available. | ||||
Isolation, environment and safety
| Strain | Isolation source | Category/location | Oxygen tolerance | Biosafety | GC content |
|---|---|---|---|---|---|
| No isolation or safety record curated. | |||||
Sequence information
Genome assemblies
| Accession | Source | Level | Size/GC | Quality | BioProject |
|---|---|---|---|---|---|
| No assembly registered. | |||||
Marker and ribosomal sequences
| Strain | Type | Accession | Length | Description |
|---|---|---|---|---|
| No strain-specific sequence resources curated. | ||||
MCFA pathways and genes
Reverse β-oxidation (chain elongation)0 of 5 functions0%
Fatty acid biosynthesis (FAS II)0 of 7 functions0%
Show 0 annotation-derived MCFA genes
| Gene | Locus | Function | Protein | Orthogroup |
|---|---|---|---|---|
| No strain-specific gene records. | ||||
Curator-approved marker pathway assessments
These summaries use approved candidate predictions only and update after every review decision.
| Assembly | Pathway rule | Approved markers | Status |
|---|---|---|---|
| No approved-marker pathway assessments. | |||
Profile-HMM marker predictions
Approved candidates and unresolved review calls are genomic hypotheses, not evidence of expression or MCFA production.
| Marker | Assembly / protein | Confidence and status | Support | Review history |
|---|---|---|---|---|
| No active marker predictions for this organism. | ||||
Literature and provenance
| Study | DOI | Public data |
|---|---|---|
| No organism-linked literature indexed yet. | ||
Profile evidence
- No strain-profile evidence attached.
External databases can change. mcfaKB records source links and separates experimentally reported, curator-entered and predicted information.