Ch. 3 - Amino AcidsWorksheetSee all chapters
All Chapters
Ch. 1 - Introduction to Biochemistry
Ch. 2 - Water
Ch. 3 - Amino Acids
Ch. 4 - Protein Structure
Ch. 5 - Protein Techniques
Ch. 6 - Enzymes and Enzyme Kinetics
Ch. 7 - Enzyme Inhibition and Regulation
Ch. 8 - Protein Function
Ch. 9 - Carbohydrates
Ch. 10 - Lipids
Ch. 11 - Biological Membranes and Transport
Ch. 12 - Biosignaling
Clutch Review 1: Nucleic Acids, Lipids, & Membranes
Clutch Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway
Clutch Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism
Clutch Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation
Amino Acid Groups
Amino Acid Three Letter Code
Amino Acid One Letter Code
Amino Acid Configuration
Essential Amino Acids
Nonpolar Amino Acids
Aromatic Amino Acids
Polar Amino Acids
Charged Amino Acids
How to Memorize Amino Acids
Non-Ionizable Vs. Ionizable R-Groups
Isoelectric Point
Isoelectric Point of Amino Acids with Ionizable R-Groups
Titrations of Amino Acids with Non-Ionizable R-Groups
Titrations of Amino Acids with Ionizable R-Groups
Amino Acids and Henderson-Hasselbalch

Concept #1: Memory Tools for Amino Acids

Practice: Fill-in the missing R-groups for the following peptide from memory: D-I-F-C-R-Q.

Practice: Which of the 20 standard amino acids can be grouped into the following categories?

a. Contain cyclic/ring structures.                                                     b. Sulfur-containing.

Practice: Fill-in the blanks & R-groups for each of the α-amino acids from memory.

Practice: Match the amino acid to the type of R-group it has:

Leu ____                                   1. Hydroxyl-containing

E ____                                      2. Acidic

K ____                                      3. Basic

Ser ____                                  4. Sulfur-containing

C ____                                     5. Nonpolar aromatic

W ____                                    6. Nonpolar aliphatic

Practice: Name the amino acids that contain each of the following in their R-groups:

a) Hydroxyl group: __________________                      e) Sulfur atom: ­­­­­­­__________________

b) 2nd chiral carbon: __________________                    f) Amino group: __________________

c) Amide group: __________________                          g) Acidic group: __________________

d) Basic group: __________________                           h) Aromatic ring: __________________