Why do onions make us cry?

Few can escape the wrath of the onion; the chemicals released in self-defense make us well up. Scientists shed light on the enzyme responsible.

Caffeine may ward off dementia by boosting protective enzyme

Researchers have uncovered a number of compounds – including caffeine – that boost production of the enzyme NMNAT2, which may protect against dementia.

Enzymatic activity essential for vision may provide target for drug transport

Researchers at Case Western Reserve University School of Medicine have uncovered the mechanism that enables the enzyme Lecithin: retinol acyltransferase (LRAT) to store vitamin A-a process that is…