HW3 biochem.docx - HW-3 1 Explanation In the given...

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HW-3 1. Explanation: In the given structure, firstly locate the acid group of the amino acid and then mark the carbon atom present adjacent to the acid group as shown below: In the given amino acid (glutamate), two  acid groups are present so, firstly locate the  acid group of the amino acid and then mark  the carbon atom as   which is  present adjacent to the   from the  acid group of amino acid as shown below:
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The term amino acids mean that it contains both an amino group and any type of acid group. This term is always used to refer an alpha amino carboxylic acid. The subunits of proteins composed of an alpha carbon bonded to a carboxylate group, a protonated amino group, a hydrogen atom and a variable R group. The D and L notations are used for monosaccharides and it is also used for amino acids. Fundamentals In the Fischer projection, if the carboxyl group is on the top, R group is on the bottom of the vertical axis, and the amino group is on the right side then it is known as D-amino acid. Similarly, if the carboxyl group is on the top, R group is on the bottom of the vertical axis and the amino group is on the left side then it is known as L-amino acid. Nonpolar amino acids contain alkyl or aromatic R groups, which make them hydrophobic. Polar amino acids contain polar R groups which interact with water.
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The amino group is left side. In this structure, the amino group is on the left side, carboxyl group is on the top and the R group ( ) is on the bottom. So, the configuration will be L
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  • Spring '14
  • acid group of the amino acid

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