Amino Acids and pI

Introduction to Amino Acid Structure00:00:05

Overview of amino acids as the building blocks of proteins, their amphoteric nature, and the structural significance of the alpha carbon and side chains (R-groups) in determining properties.

Stereochemistry and Classification00:03:08

Discussion on stereoisomers (L and D configurations), chirality, and the classification of the 20 naturally occurring amino acids based on their side chain properties: nonpolar, neutral polar, acidic, and basic.

Ionization and Titration Curves00:10:01

Analysis of amino acid titration, the role of pKa values in ionization, and how different side chains influence the protonation states of the carboxyl and amino groups.

Understanding the Isoelectric Point (pI)00:18:03

Definition of the isoelectric point as the pH at which an amino acid has no net charge (zwitterion). Step-by-step guide on calculating pI for neutral, acidic, and basic amino acids.

Applications: Electrophoresis00:40:11

Introduction to electrophoresis as a technique for separating amino acids and proteins based on their net charge at a specific pH, utilizing their differing migration patterns toward electrodes.