(a)
Interpretation:
The approximate molecular weight of insulin (51 amino acids) should be calculated.
Concept introduction:
Proteins are
They polymerise by peptide linkage to form dipeptide, oligopeptide and polypeptide molecules. Each peptide bond formation is a condensation reaction that occurs with the elimination of water molecule.
Number of amino acids is calculated as:
Answer to Problem 49A
Approximate molecular weight of insulin =
Explanation of Solution
The average molecular mass of an amino acid = 110 g/mole
Insulin consists of 51 amino acids.
The mathematical expression is:
Put the values,
Molecular mass of insulin =
=
(b)
Interpretation:
The approximate molecular weight of myosin (1750 amino acids) should be calculated.
Concept introduction:
Proteins are polymeric biomolecules which are formed by the polymerisation of amino acids. Amino acids are the organic molecules with
They polymerise by peptide linkage to form dipeptide, oligopeptide and polypeptide molecules. Each peptide bond formation is a condensation reaction that occurs with the elimination of water molecule.
Number of amino acids is calculated as:
Answer to Problem 49A
Approximate molecular weight of myosin =
Explanation of Solution
The average molecular mass of an amino acid = 110 g/mole
Myosin consists of 1750 amino acids.
The mathematical expression is:
Put the values,
Molecular mass of myosin =
=
Chapter 23 Solutions
Chemistry: Matter and Change
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