Role of the FhlA transcriptional activator in metabolic changes in Escherichia coli during fermentation of mixed carbon sources at acidic pH.
Heghine Gevorgyan, Marine Parsadanyan, Anait Vassilian, Anna Poladyan, Karen Trchounian · Biochimie · 2025
Research-use notice
Independent study record
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H2HUBB TAKEAWAY
In The extracellular formate concentration was higher by ∼10 mM (at 20 h) and ∼8 mM (at 72 h) in cells lacking FhlA, escherichia coli formate hydrogen lyase (FHL) complexes are involved in the acid resistance mechanisms during fermentation, neutralizing intracellular formate to molecular hydrogen (H₂). The authors concluded that it can be concluded that fermenting cells efficiently regulate metabolic pathways to adapt and maintain viability under acidic conditions. These findings from a laboratory model add evidence supporting molecular hydrogen's biological and therapeutic potential in the model studied.
What the Findings Mean
H2HUBB reviewed how molecular hydrogen affected the outcomes measured in The extracellular formate concentration was higher by ∼10 mM (at 20 h) and ∼8 mM (at 72 h) in cells lacking FhlA. Escherichia coli formate hydrogen lyase (FHL) complexes are involved in the acid resistance mechanisms during fermentation, neutralizing intracellular formate to molecular hydrogen (H₂).
What the Researchers Studied
The researchers studied The extracellular formate concentration was higher by ∼10 mM (at 20 h) and ∼8 mM (at 72 h) in cells lacking FhlA. The study used a in vitro cell-culture laboratory experiment.
What Effects Did Molecular Hydrogen Have?
Escherichia coli formate hydrogen lyase (FHL) complexes are involved in the acid resistance mechanisms during fermentation, neutralizing intracellular formate to molecular hydrogen (H₂). The authors concluded that it can be concluded that fermenting cells efficiently regulate metabolic pathways to adapt and maintain viability under acidic conditions.
Why These Findings Matter
These findings from a laboratory model add evidence supporting molecular hydrogen's biological and therapeutic potential in the model studied.
How Strong Is This Evidence?
This is laboratory evidence from a in vitro cell-culture laboratory experiment. It is most informative for the biological mechanisms, cellular responses, or biochemical outcomes directly measured.
Technical Study Details
H2HUBB classifies this publication as laboratory study with laboratory or cellular evidence. The research population or model was The extracellular formate concentration was higher by ∼10 mM (at 20 h) and ∼8 mM (at 72 h) in cells lacking FhlA. The study used a in vitro cell-culture laboratory experiment.
Limitations and Safety
No separate limitations or safety findings were identified in the current-study source text available to H2HUBB.
Original Study and H2HUBB Research Context
H2HUBB presents this source-grounded research record as one contribution to the broader molecular-hydrogen evidence base.