Chapter%203 - Lecture Connections 3 | Amino Acids,...

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Click to edit Master subtitle style Lecture Connections 3 | Amino Acids, Peptides, Proteins © 2009 W. H. Freeman and Company
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Basic Structure of an Amino Acids
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Ionization of Amino Acids At acidic pH, the carboxyl group is protonated and the amino acid is in the cationic form At neutral pH, the carboxyl group is deprotonated but the amino group is protonated. The net charge is zero; such ions are called Zwitterions At alkaline pH, the amino group is neutral –NH2 and the amino acid is in the anionic form.
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Click to edit Master subtitle style The Charge of an Amino Acid Vary as a Function of pH
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Click to edit Master subtitle style Amino Acids: Sterochemistry
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Click to edit Master subtitle style Amino Acids: Classification Common amino acids can be placed in five basic groups depending on their R substituents: Nonpolar, aliphatic (7) Aromatic (3) Polar, uncharged (5) Positively charged (3) Negatively charged (2)
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Nonpolar, Aliphatic R Groups
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This note was uploaded on 09/28/2011 for the course CHEM 5541 taught by Professor Staff during the Spring '08 term at Georgia Southern University .

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Chapter%203 - Lecture Connections 3 | Amino Acids,...

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