Question
How many amino acid residues in the A chain of insulin are the same in insulin from humans, cattle (bovine), hogs, and sheep?
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First, we need to know the number of amino acid residues in the A chain of insulin for each species: Show more…
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Name the Genetically engineered human insulin. How many amino acids are present in it?
Human and horse insulin are both composed of two polypeptide chains with one chain containing 21 amino acids and the other containing 30 amino acids. Human and horse insulin differ at two amino acids: position 9 in one chain (human has serine and horse has glycine) and position 30 on the other chain (human has threonine and horse has alanine). How must the DNA differ to account for this? Identify the $5^{\prime}$ and $3^{\prime}$ ends of the four trinucleotide complementary DNA sequences.
Human insulin is composed of two polypeptide chains. One chain contains 21 amino acids, and the other contains 30 amino acids. How many nucleotides are present in the DNA to code for each chain?
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