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Original file line number Diff line number Diff line change
Expand Up @@ -160,6 +160,49 @@ environmental_factors:
evidence_source: IN_VITRO
snippet: TCE and perchloroethene (PCE) reductive dechlorination
explanation: Supports the chlorinated electron acceptors.
related_ingredients:
- preferred_term: acetylene
chebi_term:
id: CHEBI:27518
label: acetylene
relevance: >
Acetylene (C2H2) is supplied as the sole electron donor and organic carbon
source for the enrichment and arises in situ as an abiotic degradation
product of TCE.
evidence:
- reference: PMID:33531396
supports: SUPPORT
evidence_source: IN_VITRO
snippet: acetylene (C2H2) is a product of abiotic degradation of
explanation: Names acetylene (C2H2) as the substrate central to the
enrichment.
- preferred_term: trichloroethene
chebi_term:
id: CHEBI:16602
label: trichloroethene
relevance: >
Trichloroethene (TCE) is the chlorinated electron acceptor reductively
dechlorinated by the enrichment community.
evidence:
- reference: PMID:33531396
supports: SUPPORT
evidence_source: IN_VITRO
snippet: multiple microbial processes including TCE dechlorination
explanation: Names TCE as the substrate undergoing reductive dechlorination.
- preferred_term: tetrachloroethene
chebi_term:
id: CHEBI:17300
label: tetrachloroethene
relevance: >
Perchloroethene (PCE), i.e. tetrachloroethene, is reductively dechlorinated
by the groundwater enrichment alongside TCE.
evidence:
- reference: PMID:33531396
supports: SUPPORT
evidence_source: IN_VITRO
snippet: perchloroethene (PCE) reductive dechlorination by a microbial community enriched
explanation: Names perchloroethene (PCE) as a substrate reductively
dechlorinated by the enrichment.
growth_media: []
external_resources:
- name: Primary publication for the acetylene TCE-dechlorination community
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Original file line number Diff line number Diff line change
Expand Up @@ -91,6 +91,99 @@ taxonomy:
evidence_source: IN_VITRO
snippet: Clostridium kluyveri monocultures in batch operated stirred-tank bioreactors
explanation: Supports C. kluyveri as the chain-elongating organism whose CO sensitivity and process role were studied.
related_ingredients:
- preferred_term: carbon monoxide
chebi_term:
id: CHEBI:17245
label: carbon monoxide
relevance: >
CO is the primary gaseous carbon/energy feedstock fed to the coculture; its
fermentation drives autotrophic growth and the downstream conversion to
longer-chain alcohols.
evidence:
- reference: PMID:37110426
supports: SUPPORT
evidence_source: IN_VITRO
snippet: 1-Butanol and 1-Hexanol from CO
explanation: Names CO as the gaseous feedstock converted by the synthetic clostridial coculture.
- preferred_term: carbon dioxide
chebi_term:
id: CHEBI:16526
label: carbon dioxide
relevance: >
CO2 is co-fed with CO in the continuous gassing regime that sustains the
autotrophic acetogenic partner.
evidence:
- reference: PMID:34669248
supports: SUPPORT
evidence_source: IN_VITRO
snippet: continuous CO/CO2 -gassing
explanation: Names CO2 as part of the continuous gas supply to the coculture.
- preferred_term: acetate
chebi_term:
id: CHEBI:30089
label: acetate
relevance: >
Acetate is one of the main C2 products of acetogenic syngas fermentation
that feeds the chain-elongation partner.
evidence:
- reference: PMID:34669248
supports: SUPPORT
evidence_source: IN_VITRO
snippet: produce mainly acetate and
explanation: Names acetate as a primary product of syngas fermentation in this system.
- preferred_term: ethanol
chebi_term:
id: CHEBI:16236
label: ethanol
relevance: >
Ethanol is a main C2 product of the acetogenic partner and a substrate for
chain elongation by C. kluyveri.
evidence:
- reference: PMID:34669248
supports: SUPPORT
evidence_source: IN_VITRO
snippet: ethanol efficiently
explanation: Names ethanol as a primary product of syngas fermentation.
- preferred_term: 1-butanol
chebi_term:
id: CHEBI:28885
label: butan-1-ol
relevance: >
Butanol is a longer-chain alcohol product whose final concentration
increased threefold in coculture relative to C. carboxidivorans monoculture.
evidence:
- reference: PMID:34669248
supports: SUPPORT
evidence_source: IN_VITRO
snippet: the corresponding alcohols butanol and hexanol
explanation: Names butanol as an alcohol produced by acid reduction in the coculture.
- preferred_term: 1-hexanol
chebi_term:
id: CHEBI:87393
label: hexan-1-ol
relevance: >
Hexanol is a target medium-chain alcohol whose production was enabled by the
coculture but not the acetogen monoculture.
evidence:
- reference: PMID:34669248
supports: SUPPORT
evidence_source: IN_VITRO
snippet: the corresponding alcohols butanol and hexanol
explanation: Names hexanol as an alcohol produced by acid reduction in the coculture.
- preferred_term: sulfide
chebi_term:
id: CHEBI:26822
label: sulfide
relevance: >
Continuous sulfide supply increased autotrophic growth and ethanol formation
by C. carboxidivorans under low-CO conditions in the continuous cascade.
evidence:
- reference: PMID:37110426
supports: SUPPORT
evidence_source: IN_VITRO
snippet: continuous supply of sulfide led to
explanation: Names sulfide as a supplement improving autotrophic growth and ethanol formation.
ecological_interactions:
- name: Acetogen-Chain Elongator Product Coupling
description: >
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Original file line number Diff line number Diff line change
Expand Up @@ -423,6 +423,118 @@ associated_datasets:
evidence_source: COMPUTATIONAL
snippet: Genome-based metabolic reconstruction highlights metabolic versatility of Methylophilaceae
explanation: Links Methylophilaceae genomic evidence to the curated methylotroph guild.
related_ingredients:
- preferred_term: methane
chebi_term:
id: CHEBI:16183
label: methane
relevance: >
Methane is the selective carbon and energy substrate supplied to the Lake
Washington sediment microcosms and the primary carbon source oxidized by the
methanotrophic members of the methane-cycling community.
evidence:
- reference: PMID:25755930
supports: SUPPORT
evidence_source: IN_VITRO
snippet: methane supplied to lake sediment microbial
explanation: Methane is the substrate fed to the lake sediment community.
- reference: PMID:32655999
supports: SUPPORT
evidence_source: COMPUTATIONAL
snippet: oxidize methane as their primary carbon
explanation: Methanotrophs in the modeled community oxidize methane as their primary carbon source.
- preferred_term: dioxygen
chebi_term:
id: CHEBI:15379
label: dioxygen
relevance: >
Oxygen tension is the controlled environmental variable that structures which
methanotroph and methylotroph genera dominate the methane-fed microcosms.
evidence:
- reference: PMID:25755930
supports: SUPPORT
evidence_source: IN_VITRO
snippet: different oxygen tensions
explanation: Oxygen was varied across microcosms as a key factor in community composition.
- preferred_term: methanol
chebi_term:
id: CHEBI:17790
label: methanol
relevance: >
Methanol is a one-carbon intermediate of methylotrophy; Lake Washington
Methylophilaceae ecotypes carry methanol dehydrogenase substrate-oxidation
systems.
evidence:
- reference: PMID:25058595
supports: SUPPORT
evidence_source: COMPUTATIONAL
snippet: MxaFI-type methanol dehydrogenase
explanation: Methylophilaceae ecotypes possess methanol dehydrogenase oxidation systems.
- preferred_term: formaldehyde
chebi_term:
id: CHEBI:16842
label: formaldehyde
relevance: >
Formaldehyde is a central one-carbon intermediate whose excretion and transfer
between community members is predicted by the genome-scale community model.
evidence:
- reference: PMID:32655999
supports: SUPPORT
evidence_source: COMPUTATIONAL
snippet: excretion of formaldehyde
explanation: The community model predicts formaldehyde excretion among community members.
- preferred_term: carbon dioxide
chebi_term:
id: CHEBI:16526
label: carbon dioxide
relevance: >
Carbon dioxide is a predicted excreted product of the methane-cycling community
in the genome-scale metabolic model.
evidence:
- reference: PMID:32655999
supports: SUPPORT
evidence_source: COMPUTATIONAL
snippet: and carbon di-oxide in the community
explanation: The community model predicts carbon dioxide excretion (text spells it "carbon di-oxide").
- preferred_term: methylamine
chebi_term:
id: CHEBI:16830
label: methylamine
relevance: >
Methylamine is a methylotrophy substrate oxidized by Lake Washington
Methylophilaceae ecotypes, which encode methylamine dehydrogenase.
evidence:
- reference: PMID:25058595
supports: SUPPORT
evidence_source: COMPUTATIONAL
snippet: methylamine dehydrogenase versus N-methylglutamate pathway
explanation: Methylophilaceae ecotypes possess methylamine dehydrogenase oxidation systems.
- preferred_term: pyruvate
chebi_term:
id: CHEBI:15361
label: pyruvate
relevance: >
Pyruvate metabolism is one of the internal metabolic pathways that varied
across conditions in the genome-scale community model of the methanotrophs.
evidence:
- reference: PMID:32655999
supports: SUPPORT
evidence_source: COMPUTATIONAL
snippet: pyruvate metabolism, and the TCA cycle
explanation: Pyruvate metabolism is a modeled pathway shifting across conditions.
- preferred_term: nitrate
chebi_term:
id: CHEBI:17632
label: nitrate
relevance: >
Nitrate reduction is part of the nitrogen-metabolism versatility of Lake
Washington Methylophilaceae ecotypes, which vary in denitrification potential.
evidence:
- reference: PMID:25058595
supports: SUPPORT
evidence_source: COMPUTATIONAL
snippet: nitrate reduction
explanation: Methylophilaceae ecotypes differ in assimilatory versus respiratory nitrate reduction.
metal_relevance: NOT_APPLICABLE
metal_notes: >
No metal or rare earth element processing role is curated for this
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Original file line number Diff line number Diff line change
Expand Up @@ -210,6 +210,95 @@ growth_media:
evidence_source: IN_VITRO
snippet: under a CH4:O2 or air atmosphere
explanation: Supports the headspace conditions for the PHBV accumulation stage.
related_ingredients:
- preferred_term: poly(3-hydroxybutyrate-co-3-hydroxyvalerate)
relevance: >
PHBV is the target biopolymer produced by the coculture from methane and
volatile fatty acid cosubstrates.
evidence:
- reference: PMID:38516398
supports: SUPPORT
evidence_source: IN_VITRO
snippet: synthesize poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV)
explanation: Names PHBV as the polymer synthesized by the coculture.
- preferred_term: methane
chebi_term:
id: CHEBI:16183
label: methane
relevance: >
Methane is the primary gaseous feedstock supplied to the methanotroph for
growth and PHBV accumulation.
evidence:
- reference: PMID:38516398
supports: SUPPORT
evidence_source: IN_VITRO
snippet: previously grown on methane
explanation: Names methane as the growth substrate for the cultures.
- preferred_term: oxygen
chebi_term:
id: CHEBI:15379
label: dioxygen
relevance: >
Oxygen is supplied as part of the CH4:O2 headspace used for methanotrophic
growth and the PHBV accumulation tests.
evidence:
- reference: PMID:38516398
supports: SUPPORT
evidence_source: IN_VITRO
snippet: under a CH4:O2
explanation: Names oxygen (O2) as a component of the CH4:O2 atmosphere.
- preferred_term: valeric acid
chebi_term:
id: CHEBI:17418
label: valeric acid
relevance: >
Valeric acid was supplied alone as a cosubstrate and promoted PHBV
accumulation in the coculture.
evidence:
- reference: PMID:38516398
supports: SUPPORT
evidence_source: IN_VITRO
snippet: enriched with valeric acid
explanation: Names valeric acid as a medium cosubstrate.
- preferred_term: acetic acid
chebi_term:
id: CHEBI:15366
label: acetic acid
relevance: >
Acetic acid was a component of the mixed VFA cosubstrate fed to the
coculture for PHBV accumulation.
evidence:
- reference: PMID:38516398
supports: SUPPORT
evidence_source: IN_VITRO
snippet: acetic, propionic, butyric, and valeric acids
explanation: Names acetic acid in the mixed VFA cosubstrate.
- preferred_term: propionic acid
chebi_term:
id: CHEBI:30768
label: propionic acid
relevance: >
Propionic acid was a component of the mixed VFA cosubstrate fed to the
coculture for PHBV accumulation.
evidence:
- reference: PMID:38516398
supports: SUPPORT
evidence_source: IN_VITRO
snippet: acetic, propionic, butyric, and valeric acids
explanation: Names propionic acid in the mixed VFA cosubstrate.
- preferred_term: butyric acid
chebi_term:
id: CHEBI:30772
label: butyric acid
relevance: >
Butyric acid was a component of the mixed VFA cosubstrate fed to the
coculture for PHBV accumulation.
evidence:
- reference: PMID:38516398
supports: SUPPORT
evidence_source: IN_VITRO
snippet: acetic, propionic, butyric, and valeric acids
explanation: Names butyric acid in the mixed VFA cosubstrate.
external_resources:
- name: Exact-system PHBV primary publication
repository: OTHER
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