
Interpretation:
To find the average amino acid that resides in protein of typical composition using the table of information provided.
Concept introduction:
The massive chemical compounds created from amino acids are proteins. They measure nearly twenty ordinary amino acids exist as the chemical compound of proteins.

Explanation of Solution
The common relative molecular mass of twenty amino acids is given below:
S.no | Amino acid | Residue mass (Da) |
1 | Alanine | 71.08 |
2 | Arginine | 156.2 |
3 | Asparagine | 114.11 |
4 | Asparthic acid | 115.09 |
5 | Cysteine | 103.14 |
6 | Glutamine | 128.14 |
7 | Glutamic acid | 129.12 |
8 | Glycine | 57.06 |
9 | Histidine | 137.15 |
10 | Isoleucine | 113.14 |
11 | Leucine | 113.17 |
12 | Lysine | 128.18 |
13 | Methionine | 131.21 |
14 | Pherrylalanine | 147.18 |
15 | Proline | 97.12 |
16 | Serine | 87.08 |
17 | Threonine | 101.11 |
18 | Tryphophan | 186.21 |
19 | Tyrosine | 163.18 |
20 | Valine | 99.14 |
Mean mass= | 118.9 Da |
Thus, the common mass of all twenty amino acids and its average 118.9 Da.
For example, take into account a typical supermolecule "RuBisCo (Ribulose-1, 5-bisphosphate carboxylase oxygenase)." Its chemical compound monomer has mass of 55, 000 Da and has 500 organic compound amino acid residues. So, the common mass of 500 organic compound residues is below:
So, in an exceedingly super molecule a typical composition like RuBisCO, the calculated average mass of an organic compound residue is:
Hence, the typical amino acid resides in super molecule and its typical composition is 110 Da.
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Chapter 5 Solutions
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