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The FMO3 gene makes an enzyme that breaks down nitrogen-containing compounds from the diet, including trimethylamine. These compounds are produced by bacteria in the intestine as they digest proteins from eggs, meat, soy, and other foods. Normally, the FMO3 enzyme converts fishy-smelling trimethylamine into trimethylamine N-oxide which
Trimethylamine N-oxide reductase (TOR or TMAO reductase, EC 1.7.2.3) is a microbial enzyme that can reduce trimethylamine N-oxide (TMAO) into trimethylamine (TMA), as part of the electron transport chain. The enzyme has been purified from E. coli and the photosynthetic bacteria Roseobacter denitrificans. [1]
Trimethylaminuria is a rare defect in the production of the enzyme flavin-containing monooxygenase 3 (FMO3). [19] [20] Those suffering from trimethylaminuria are unable to convert choline-derived trimethylamine into trimethylamine oxide. Trimethylamine then accumulates and is released in the person's sweat, urine, and breath, giving off a ...
Some lactic acid bacteria isolated from commercial bottled yoghurt have been shown to produce biogenic amines. They play an important role as source of nitrogen and precursor for the synthesis of hormones, alkaloids, nucleic acids, proteins, amines and food aroma components. However, food containing high amounts of biogenic amines may have ...
Trimethylamine is a full agonist of human TAAR5, [13] [14] [15] a trace amine-associated receptor that is expressed in the olfactory epithelium and functions as an olfactory receptor for tertiary amines. [15] [16] One or more additional odorant receptors appear to be involved in trimethylamine olfaction in humans as well. [16]
Proteolysis is the process that breaks down proteins. It is regulated by moisture, temperature, and bacteria. [5] This process does not occur at a uniform rate and thus some proteins are degraded during early decomposition, while others are degraded during later stages of decomposition.
Since many amino acids interact with other amino acids based on electrostatic attraction, changing the charge can break these interactions. The loss of these interactions alters the proteins structure , but most importantly it alters the proteins function, which can be beneficial or detrimental.
Ketogenesis pathway. The three ketone bodies (acetoacetate, acetone, and beta-hydroxy-butyrate) are marked within orange boxes. Ketogenesis is the biochemical process through which organisms produce ketone bodies by breaking down fatty acids and ketogenic amino acids.