Question
Asked Jan 30, 2019
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what are the types of amino​ acids?

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Expert Answer

Step 1

Classification of amino acids. 

Step 2

Amino acids are the organic compounds containing an amine functional group and a carboxyl functional group with a side chain (R group). The side chain is characteristic for each amino acid. They are the building blocks of proteins. There are 20 different amino acids which include alanine, arginine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, histidine, isoleucine, leucine, lysine, methionine, phenylalaine, proline, serine, threonine, tryptophan, tyrosine, and valine.

Step 3

Classification of amino acids- Amino acids are classified based on their structure and and role in nutrition.

1. Classification based on the structure- Based on the structure of their side chain or the R-group, the amino acids are classified into-

  • Non-polar amino acids- They are hydrophobic with an R-group either containing a alkyl group or an aromatic group. They include Glycine, Alanine, Valine, Methionine , Leucine , Isoleucine, Proline , Phenylalanine, Tryptophan
  • Polar amino acids- They are made up of different polar groups like the amines, alcohols or acids as their R-group. They are hydrophilic and further d...

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