Used in protein stabilization, especially in marine organisms, to counteract the denaturing effects of high pressure and urea in cells. Commonly found in deep-sea fish and sharks, it helps maintain proper protein folding and enzyme function under extreme conditions. In research, it is applied to study protein structure and folding mechanisms. Also investigated for its potential role in cardiovascular health, as gut microbiota can metabolize it into trimethylamine, a compound linked to heart disease. Used in biotechnology to improve solubility and stability of recombinant proteins during purification and storage.