Protein Structure And Enzyme Action

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Scientific Report- Protein Structure and Enzyme Action Holly Tupper Amino Acids What is an amino acid and its chemical structure? Amino acids are essential for the human body as they are referred to as the building blocks of proteins (Nutriology 2003). They are compounds that contain a carboxylic acid group (-COOH) and an amino group (-NH2) also joined to them are various side groups which are bonded to the alpha carbon (Thermo-fisher 2015). Figure one showing the structure of an amino acid. Date Accessed 12.3.16 The…show more content…
When two or more amino acids and joined to one another with a peptide bond it is known then as a dipeptide bond. This is the formation of a polypeptide or amino acid polymer. The formation of polypeptides The formation of polypeptides and protein chains involve a condensation reaction. Condensation reactions are the joining together of two molecules and during the reaction water is released. The reverse of this is polymer disassembly into monomers involves a hydrolysis reaction whereby water is used as a reactant and isn’t released. Figure three shows the condensation reaction clearly illustrating the formation and realising of the water molecule. Date accessed 10.3.16;_ylt=A7x9Unu7eelWVCkAkjB3Bwx.;_ylu=X3oDMTBsYWhiN2NvBHNlYwNzYwRjb2xvA2lyMgR2dGlkAw--?_adv_prop=image&fr=yhs-iry-fullyhosted_003&va=condensation+reaction+polypeptides&hspart=iry&hsimp=yhs-fullyhosted_003 In order for a protein to be formed 50-2000 amino acid residues must then be joined together. The reason it is now considered a residue is due to the condensation reaction loosing water and thus the residue from the reaction is the polypeptide chain (BioFundementals 2012). Properties of amino acid Amino acids are solids and their properties include a very high melting point which is between 200-300°C. This is often considered surprising due to how
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