Biomolecules Amino Acids, Peptides, and Proteins

All natural amino acids are a-amino acids the amino group and the carboxylic acid group are bonded to the same carbon. 

All but one (proline) of the 20 common amino acids are primary amines. 

All of the amino acids are represented by both a three-letter code and a one-letter code. 

At pH = 7.3, their side chains exist as carboxylate ions. 

The Henderson-Hasselbalch equation and isoelectric points (Section 26.2). 

Citrate synthase catalyzes the reaction of acetyl CoA with oxaloacetate to give citrate, the first step in the citric acid cycle of food metabolism. 

Amino acids, as their name implies, are difunctional. They contain both a basic amino group and an acidic carboxyl group  

Their value as building blocks to make proteins stems from the fact that amino acids can join together into long chains by forming amide bonds between the -NH2 of one amino acid and the -CO2H of another. For classification 

2 Amino Acids and the Henderson-Hasselbalch Equation Isoelectric Points 

Online homework forthis chapter can be assigned in Organic OWL. 

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CHAPTER 26 Biomolecules Amino Acids, Peptides, and Proteins... 

Chapter 26, Biomolecules Amino Acids. Peptides, and Proteins—The chapter has been updated, particularly in its coverage of solid-phase peptide synthesis. 

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