what are the chemical structure and characteristics of amino acids

Summary

All amino acids have the same basic structure, with a carbon called the α carbon at the center, attached to four groups - a hydrogen, an α- carboxyl group, an α-amine group, and an R-group, sometimes referred to as a side chain. 1 2 Nutritionists divide amino acids into two groups – essential amino acids and non-essential amino acids, with essential amino acids needing to be included in our diet. 2 Acidic amino acids have carboxylic acid side chains, such as Aspartic acid and Glutamic acid 2 , while basic amino acids have nitrogen-containing side chains, such as Arginine, Histidine, and Lysine. 2 Aromatic amino acids include Phenylalanine, Tryptophan, and Tyrosine. 2

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Summary All amino acids have the same basic structure, which is shown in Figure 2.1. At the “center” of each amino acid is a carbon called the α carbon and attached to it are four groups - a hydrogen, an α- carboxyl group, an α-amine group, and an R-group, sometimes referred to as a side chain
2.2: Structure & Function - Amino Acids - Biology LibreTexts
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Summary All amino acids have the same basic structure, shown in Figure 2.1. At the center of each amino acid is a carbon called the α carbon and attached to it are four groups – a hydrogen, a carboxylic acid group, an amine group, and an R-group, sometimes referred to as a variable group or side chain
2.2: Structure and Function – Amino Acids – Introductory Biochemistry
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The chemical properties and order of the amino acids are key in determining the structure and function of the polypeptide, and the protein it's part of. But how are amino …
Introduction to proteins and amino acids - Khan Academy
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Glycine, alanine, and proline have small, nonpolar side chains and are all weakly hydrophobic. Phenylalanine, valine, leucine, isoleucine, and methionine have larger side chains and are more strongly hydrophobic. Polar,…
Amino Acids Characteristics and Structures - ThoughtCo
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To understand how a protein gets its final shape or conformation, we need to understand the four levels of protein structure : primary, secondary, tertiary, and quaternary. Primary structure The simplest…
Orders of protein structure - Khan Academy
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Six of the nonessential amino acids (arginine, cysteine, glutamine, glycine, proline, and tyrosine) are considered conditionally essential as dietary supplementation may be required during the course of an illness or…
Amino Acids: Structure, Classification and Function - ThoughtCo
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Amino acids can be classified based on the characteristics of their distinctive side chains as nonpolar, polar but uncharged, negatively charged, or positively charged. The amino acids found in proteins…
18.1: Properties of Amino Acids - Chemistry LibreTexts
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The amino acids are all chiral, with the exception of glycine, whose side chain is H. As with lipids, biochemists use the L and D nomenclature. All naturally occuring proteins…
26.1 Structures of Amino Acids - Chemistry LibreTexts
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