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Amino Acid Properties Polypeptide Properties
Standard vs. nonstandard AA structures - AA classifications by structure and properties   JSmol Tutorial 0 - Manipulating JSmol images with the mouse.
Practice Quiz (PQ 1) - Self-assessment: Test and refine your knowledge of AA properties   JSmol Tutorial 1 - Exploring the 3-D structure of a polypeptide segment of oxy-myoglobin.
AA Sorting "Games" - Test your ability to sort AAs according to their abbreviations and their sidechain chemical and/or physical properties. (CDF)
Saturation Fraction (Ya)
What does the saturation fraction (Ya) signify and how is it defined?
 Logarithmic scales
 Logarithmic algebra - Multiplication and division
 Logarithmic axes - Interpretation
Reversible Equilibrium Reactions
Complete guide to reversible equilibrium reactions  (Flash animation with narration)
Overview of reversible monovalent ligand binding systems
Monovalent Equilibrium Reactions (Simple Buffers)
Acetic acid titration  (Flash animation)
Monovalent ligands and buffer properties (PDF)
Monovalent buffers (CDF)
Monovalent buffers (Excel)
Practice Quiz (PQ 5) - Monoprotic buffers
Practice Quiz 9 (PQ 9) - Weak acid equilibrium reactions
Practice Quiz (PQ 14) - Graphical analysis of simple buffers
Practice Quiz (PQ 20) - Buffers: Saturation (Ya) and dissociation (Yd) fractions
Multivalent Ligand Binding Reactions (Complex Buffers)
Bivalent amino acids - Acid/base titration analysis (Excel)
Bivalent amino acids - Acid/base titration analysis (CDF)
Trivalent amino acids - Acid/base titration analysis (Excel)
Trivalent amino acids - Acid/base titration analysis (CDF)
Microenvironmental Perturbation of Equilibrium Reactions
Dicarboxylate acid/base titration - Analysis of anticooperative ligand binding reactions with Hill and Scatchard plots. (Excel)
Comparison of the pH titration properties of a single, nonhomologous histidine residue sidechain in hen egg-white lysozyme (HEL) and human lysozyme. (JSmol)
Bovine ribonuclease A (RNase A) has four differentially titratble histidine residues. (JSmol)
© Duane W. Sears, June 18, 2019