Which one is the most abundant protein in the animal world?

Which one is the most abundant protein in the animal world?
  1. Trypsin
  2. Haemoglobin
  3. Collagen
  4. Insulin

Solution

Collagen is the most abundant protein (structural protein) in the animal world while Ribulose Bisphosphate Carboxylase Oxygenase (RUBISCO) is the most abundant protein in the whole of the plant world.

Asked in: NEET 2012 (Screening)

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