Question

Question
Insulin is made of 51 amino acids
arranged on chains A and B. How many
amino acids are there in chain A?
a) 21
b) 20
c) 30
d) 31​

Answer 1

Answer:

21

In 1955, insulin was the first protein to be fully sequenced. The insulin molecule consists of 51 amino acids arranged in two chains, an A chain (21 amino acids) and B chain (30 amino acids) that are linked by two disulfide bonds

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Answer 2

21 is the answer.

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