Proteins And Its Effect On Human Body

1969 Words Nov 21st, 2015 8 Pages
Proteins are one of the most important biological molecules in the body; they make up more than 50% of the dry mass in human body cells. Their simple structure can be described as amino acid polymers as they are made up of many amino acid monomers stringed together in a linear fashion, which then gives rise to more complex structures, as various bonding and manipulation takes place. The name ‘protein’ comes from the Greek word meaning ‘holding first place’ which supports the fact that they are essential to life. Proteins, depending on their structure and where they are found, play very different roles in an organism. One of the main types of proteins are enzymes which act as biological catalysts, and are fundamental to the chemical reactions that take place in the body known collectively as metabolism. Other types of proteins include structural proteins, which provide strength and building material; transport proteins, which facilitate the crossing of ions, water or large polar molecules across plasma membranes as well as certain substances around the body; regulatory proteins, which control cell processes such as gene expression and cell development; signalling proteins, which are responsible for cell communication; sensory proteins, which enable us to detect and respond to internal and external stimuli; as well as motor proteins, defence proteins and storage proteins.
Amino acids are the organic molecules that join together to form the primary structure of proteins. There…
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