tyrosinase
Meaning
an enzyme, present in plants and animals, that catalyzes the production of melanin and other pigments from tyrosine by oxidation.
Structure
Usage
tyrosinase activity is crucial for determining skin and hair color in mammals.
the browning of fruits like bananas is often due to the action of the enzyme tyrosinase.
inhibitors of tyrosinase are commonly researched for potential use in skin-lightening cosmetics.
Etymology
The word 'tyrosinase' is a modern scientific compound, formed in the late 19th century. Its first element, 'tyrosine', is derived from the Greek 'tyros' (cheese), as this amino acid was first discovered in casein, a protein found in cheese. The suffix '-ase', a standard denoter for enzymes in biochemical nomenclature, was adopted from the ending of words like 'diastase'. Thus, tyrosinase literally means "the enzyme that acts on tyrosine," directly linking its substrate to its function in biochemical pathways such as melanin synthesis.
Analysis
tyrosine (from greek 'tyros', meaning cheese, via the coined scientific term 'tyrosine') + ase (suffix of modern latin origin, denoting an enzyme).