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: Titrations Of Amino Acids With Ionizable R-Groups

Concept #2: Analyzing Titrations Of Amino Acids With Ionizable R-Groups

Practice: Determine the pI of Glu & mark it on the provided titration curve.

a. 6.96                                          

b. 5.93

c. 7.48

d. 3.22

Use the titration curve to draw the predominate structures of Glu at pH = 1.0, pH = 3.0, pH = 7.0, & pH = 11.0.

Glu at pH = 1.0                  Glu at pH = 3.0                  Glu at pH = 7.0                   Glu at pH = 11.0

Practice: Draw the predominate structures of K at the indicated sections of its titration curve. Mark the pI on the curve.

Practice: Label each arrow on Asp’s titration curve & draw its predominate structure at each colored region.

A) Amino group pKa.

B) Carboxyl group pKa.

C) R-group pKa (pKa = 3.9).

D) Amino group equivalence point.

E) Carboxyl group equivalence point.

F) R-group equivalence point.