Anti-Methanogenic Traits of Safflower Oil Compounds Against Methyl-Coenzyme M Reductase Receptor in Equines: An In Silico Docking Analysis.
Authors: Khusro Ameer, Sahibzada Muhammad Umar Khayam, Khan Shafi Ullah, Rajagopal Rajakrishnan, Elghandour Mona M M Y, Salem Abdelfattah Z M, Kuppusamy Palaniselvam, Alcala-Canto Yazmin, Tirado-González Deli N
Journal: Journal of equine veterinary science
Summary
# Editorial Summary Methane emissions from equine populations represent a growing environmental concern, and whilst horses contribute less to greenhouse gas production than ruminants, their increasing numbers make the search for cost-effective anti-methanogenic interventions increasingly important. Using computational docking analysis, researchers screened 25 bioactive compounds found in safflower oil for their ability to inhibit methyl-coenzyme M reductase (MCR)—the key enzyme catalysing methane production in the equine gastrointestinal tract—ultimately identifying nine compounds with favourable drug-like properties and strong receptor binding affinity. Acacetin emerged as the most promising candidate with a ChemGauss4 binding score of −13.35, followed by matairesinol (−12.43) and methyl tetradecanoate (−9.25), suggesting genuine potential to suppress methanogenesis at the molecular level. Whilst this in silico work provides valuable theoretical groundwork, equine professionals should recognise that computational docking does not confirm biological efficacy; the next critical steps involve in vitro rumen fermentation studies and in vivo feeding trials to determine whether safflower oil supplementation or isolated compounds can translate this molecular promise into meaningful reductions in equine methane output and feed efficiency gains.
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Practical Takeaways
- •This computational study identifies safflower oil-derived compounds as potential candidates for reducing methane emissions from horses, though laboratory and clinical validation is still required before practical application
- •Acacetin emerged as the most promising compound from this analysis and warrants further experimental testing to confirm its anti-methanogenic efficacy in equines
- •These findings are preliminary and represent a screening tool only; practitioners should await in vivo studies before considering safflower oil supplementation as a methane mitigation strategy
Key Findings
- •Of 25 safflower oil compounds screened, 9 passed Lipinski's rule of five drug-likeness criteria
- •Acacetin showed the strongest binding affinity to methyl-coenzyme M reductase (MCR) with a chemguass4 score of -13.35
- •Nine bioactive compounds including acacetin, matairesinol, and methyl tetradecanoate demonstrated potential anti-methanogenic properties via MCR inhibition
- •In silico modeling suggests safflower oil compounds may reduce methane production in equines through enzyme targeting