Question

The production of the dark pigments in the fur on the paw, ears, and tail of Siamese cats involves the enzyme tyrosinase. An analysis of the structure of tyrosinase is most likely to reveal which TWO of the following characteristics

Answer 1

An analysis of the structure of tyrosinase is most likely to reveal following characteristics:

• Tyrosinase, an enzyme that contains copper and is found in the 75 kD glycoprotein molecule T4, is crucial for melanogenesis and pigmentation.
• Three domains—the central domain, the N-terminal domain, and the C-terminal domain—can be distinguished in the overall structure of tyrosinase.

Tyrosine is transformed from tyrosine to dopaquinone and finally to the dark-colored material, melanin, through a metabolic route, which is catalyzed by the enzyme tyrosinase. The brown hue of Siamese cats' ears, paws, tail, and face is a result of melanin.

Tyrosinase, a protein, has undergone a mutation that is thought to be the reason for this temperature requirement in Siamese cats. The same pigment present in your skin and eyes, melanin, is created by the enzyme tyrosinase. The fur will be darker the more melanin there is.

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