The same dose of a drug can have varying degrees of effectiveness and safety depending on how well the liver can metabolize it.

An enzyme related to neurotoxins found in rattlesnake venom may be a key molecular mechanism behind COVID-19 severity, researchers report.

A small fungal enzyme that affects chirality could make it simpler to develop and manufacture drugs, report scientists.

A bioluminescent capsule tests levels of bile salt hydrolase in the gut and its creators say its findings suggest the power of probiotics.

A new paper maps out how saliva gets its many proteins. It's a baseline for further investigations into spit as diagnostic fluid.

An enzyme called chondroitinase ABC that regrows damaged nerve tissue in animals has been too unstable for human use. New work could change things.

With modification a PARP inhibitor drug that's struggled in clinical trials kills cancer much more effectively, researchers say.

One enzyme may determine whether human development starts correctly. The discovery could help explain why some fertilization fails.

A new technique called genetically targeted chemical assembly reprograms cells to build artificial structures to carry out functions inside the body.