There are so many different types of proteins in the body. In fact, it is estimated that the human body contains 80,000–400,000 different types of proteins, and these proteins are present for different purposes in the body.
Now, the cells in our body can manufacture these proteins via the activity of specific genes within its deoxyribonucleic acid (DNA) identifier. These proteins are peptide polymers that contain multiple amino acids all fused together. “Peptides” refer to shorter chain/simpler amino acid polymers, while “proteins” refer to longer chain/more complex amino acid polymers.