Which enzyme's abnormal activity is associated with the development of Parkinson's disease?

A Tyrosine hydroxylase
B Dopa decarboxylase
C Monoamine oxidase B ✓
D Catechol-O-methyltransferase

Explanation

Abnormal activity of monoamine oxidase B has been linked to the development of Parkinson's disease, as it is involved in the breakdown of dopamine in the brain.

Source

Journal of Neurochemistry
Enzymes in Disease Neurology Neurodegenerative Diseases Medium MEDICAL Confidence: high