Course program, A.Y. 2014-15
Lesson | Date | Topics | Linked slides and useful links |
1 | March 6th, 2015 | introduction to biophysics. Diffusion processes. | Short introduction to cell biology from NIGMS |
2 | March 13th, 2015 |
Diffusion processes (ctd.). Discussion of the optimization of
cell receptors from diffusion and the electrostatic analogy.
Further features of diffusion processes. Reaction-diffusion
equations and their applications to morphogenesis. |
|
3 | March 20th, 2015 |
The physics of water. Hydrogen bonds. Ice. Residual entropy of ice. Proton conduction in water, and the Grotthuss mechanism. Proton currents in action: the bacteriorhodopsin-ATP Synthase mechanism for bacterial photosynthesis. | |
4 | March 31th, 2015 |
Introduction to crystallography and its applications to the
structural problems of biology. |
|
5 | April 17th, 2015 | X-ray crystallography and the discovery of the structure of DNA. | |
6 | April 20th, 2015 | More on the structure of DNA. The statistical mechanics of DNA. DNA melting. | |
7 |
April 22nd, 2015 |
DNA melting, helix-to-coil transition.The structure of
proteins. Aminoacids. Peptide bonds. Classification of protein
structures. |
|
8 |
April 24th, 2015 |
Experimental demostration: DNA extraction from plant cells. Protein structure. The protein folding problem and Levinthal's paradox. Homopolymers and the Flory-Huggins theory. |
|
9 | April 27th, 2015 |
Homopolymers and the Flory-Huggins theory (ctd.). Hydrophobic
interactions. Protein folding as a computational problem. The genetic code. The Delbrück-Luria experiment. |
|
10 | May 11th, 2015 | The mechanisms of code translation and protein building. Numerical estimates. Mutation rates. |
|
11 | May 15nd, 2015 | The hallmarks of cancer. The Nordling and the Armitage-Doll
models of carcinogenesis. A simple mathematical model of the age
dependence of colorectal cancer. Peto's paradox. Introduction to radiobiology. |
|
12 | May 18th 2015 | Basics of radiobiology. Stopping Power and Linear Energy
Transfer (LET). Dose. Radiolysis of water and the formation of
Reactive Oxygen Species (ROS). Oxidative stress. Biological
effects of radiation. Survival curves: the linear-quadratic
model; the target model. Relative Biological Effectiveness
(RBE), Oxygen effect, and other effects that affect the shape of
the survival curve. |
|
13 | May 22nd 2015 |
Enzymes. Refresher of chemical thermodynamics. Chemical
kinetics. Transition-state Theory (TST). Enzyme action in the
context of TST. The Michaelis-Menten equation. The physics of
enzymes. The shape of viruses. The Tobacco Mosaic Virus (TMV). Bacteriophage phi X 174. Thermodynamics of viral self-assembly. |
|
14 |
May 29th 2015 |
Seminar on computational topics in cellular biophysics by Dr.
S. Stella |