Protein Inside The Human Body

1640 Words Apr 23rd, 2015 7 Pages
Proteins are the main manufacturing blocks and apparatuses for all living organisms. There are many types of proteins, which differ from cell to cell, in the human body. They build up the cellular and mediate biological/ metabolic processes. Proteins are key constituents of the human body, each cell of the body contains a number of proteins that play various biological processes such as structural, enzymatic and material transportation, those that are vital to life and through which the human body performs its functions properly.
Formation of protein inside the cell starts when the Deoxyribonucleic acid (DNA) transcribes the encoded genes into messenger Ribonucleic acid (mRNA), which is translated by the ribosome into a sequence of amino acids that compose the protein. (Whitford, 2005). Proteins are polymers of connected amino acids whose composition is encoded in genes. These amino acids are the basic building blocks of the protein. There are twenty amino acids types in nature. Each of them is denoted by a different letter (or three letters). All the 20 standard amino acids are fundamental components of proteins in human body. Our bodies, however, can synthesise only 10 of those standard amino acids. The rest can only be synthesised by plants and microorganisms. Mammals (including humans) must obtain these though food, which are therefore known as essential amino acids. Proteins differ only by the sequential order and the number of amino acids. The length of the protein…
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