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Denaturation of Protein by Strong AcidJohn W. Moore, Jerrold J. Jacobsen, Gary Trammell, Kristin Johnson "Strong acid denatures egg white proteins.This video contains voiceover:""The tertiary structure of egg white proteins is held together by hydrogen bonding and hydrophobic interactions. Adding strong acid to the protein disrupts the intermolecular forces, and the tertiary structure is lost. The loss in protein structure is called denaturation. The proteins precipitate, forming a white solid."""
Two "Gas-in-a-Bag" Reactions To Show the Predictive Power of the Relative AcidBase Strength ChartBrett Criswell Describes a demonstration in which two different pairs of solid chemicals mixed in two different Ziploc bags in the presence of a small quantities of water react to produce gases. Students are informed that the reactions are BrnstedLowry acidbase type reactions and must determine which member in each pair will act as the acid and which as the base. Criswell, Brett. J. Chem. Educ.2006, 83, 1167.
Acids / Bases |
Aqueous Solution Chemistry |
Descriptive Chemistry |
Gases |
Reactions |
Brønsted-Lowry Acids / Bases
Amino AcidsWilliam F. Coleman The Featured Molecules this month are the 20 standard alpha-amino acids found in proteins. The molecules are presented in two formats, the neutral form and the ionized form found in solution at physiologic pH. Coleman, William F. J. Chem. Educ.2006, 83, 1103.
Amino Acids |
Proteins / Peptides |
Molecular Properties / Structure |
Molecular Modeling |
Molecular Mechanics / Dynamics
Why and How To Teach Acid-Base Reactions without EquilibriumTerry S. Carlton A stepwise method enables students to predict which acid-base reactions occur when two solutions are mixed. The complexities of equilibrium are avoided by treating reactions as all-or-none and by providing a table of acids in order of strength. Carlton, Terry S. J. Chem. Educ.1997, 74, 939.
Amphiprotic SpeciesEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
Acids / Bases |
Amino Acids
ChemPaths 104 W Feb 2John W. Moore Today in Chem 104:
* Lecture: Biochemistry: Proteins
* Reading: Biomolecules Tutorials
o Proteins 1 (including debriefing)
o Proteins 2 (including debriefing)
o Quiz due TODAY, 11:55 PM)
* Homework #3 due by 11:55pm F Feb 4.
Proteins / Peptides |
Amino Acids
Organic Nitrogen CompoundsEd Vitz, John W. Moore A section of ChemPrime, the Chemical Educations Digital Library's free General Chemistry textbook.
