Northeastern University
Department of Physics

Fall 2007

          Physics G731: Biological Physics         



                 geminate MbO<sub>2</sub>                   nuclear resonance experiment                         DNA binding protein
 
 

 



General Information



Class meetings:  10:00-11:40   MW           325 CH
Instructor: 

Office: 
Telephone: 
E-mail:
Office Hours: 

Prof.  J. Timothy Sage

106 Dana 
x2908 
jtsage@neu.edu
Monday 12-3 pm

I am generally available when I am in my office. However, you can count on finding me during "official" office hours.

Grader: 

 
E-mail: 

Michael Holmes


holmes.mi@neu.edu




Course Objectives

Physics has a long track record of contributions to biology. Physicists such as Francis Crick, Rosalyn Yalow, and Peter Mansfield have been awarded Nobel prizes for their contributions to the life sciences. Physical techniques, such as X-ray diffraction and magnetic resonance imaging, have become essential tools in biological and medical applications. The biological sciences are undergoing a period of rapid growth, and contributions from the physical sciences will continue to be crucial.

This course is intended to reduce the barrier that many physicists encounter when they first move into biological science. Some of you are considering pursuing thesis research in this area, and I hope that this course will help you to make an informed decision. Those of you who specialize in other areas for your Ph. D. may spend part of your later career working on biological or medical problems. 

At the end of the semester, I expect you to be able to


Reading


Some recommended texts are listed below. Although no single textbook covers the full range of topics for this course, the textbooks by Daune and by Serdyuk et al. provide the closest match in terms of level and style. I have asked the bookstore to stock these two, and also requested that the library place one copy of each on reserve. In addition, I recommend that you refer to relevant portions of the Frauenfelder notes (free online) throughout the semester. I will distribute my own notes for some parts of the course, and can recommend all of the following sources for excellent coverage of certain topics.

        Michel Daune, Molecular Biophysics: Structure in Motion, (Oxford University Press, 1999).

Although slightly dated (the original French version was published in 1993), this book provides reasonably broad coverage of physical concepts relevant to the study of biological macromolecules. Its strengths and weaknesses largely complement either the online Frauenfelder notes or the new Serdyuk et al. text. Although coverage of  physical methods is weak, Daune provides considerably more coverage of nucleic acids and polymer physics. This book provides more detail on biomolecular structure than many of the texts listed here.

        Hans Frauenfelder, Physics of Proteins, unpublished lecture notes available online.

These are notes for a course that Hans Frauenfelder taught periodically before his retirement from the University of Illinois in 1992. They date well because they emphasize physical fundamentals. These notes provide better coverage of experimental topics than the books listed below, but less on mathematical modelling. Coverage of nucleic acids is limited. There are some typos and missing chapters, but the target audience is the same as this course: readers looking to apply a background in physics to important problems in biology.

        Igor N. Serdyuk, Nathan R. Zaccai, Joseph Zaccai, Methods in Molecular Biophysics: Structure, Dynamics, and Function, (Cambridge University Press, 2007).

This excellent recent text emphasizes the application of experimental techniques from physics to biological macromolecules and assemblies. I have given it a slightly lower recomendation because the coverage is much more extensive than needed for this course and because I have not had time to explore it thoroughly. However, the sections that I have read are authoritative and up-to-date. On a price-per-page basis, it is a bargain, and you will want to have a copy if you work in experimental biomolecular physics. 

        Phillip Nelson, Biological Physics: Energy, Information Life, (W. H. Freeman, 2003).

This is an excellent, physically motivated textbook, but is written at an undergraduate level. As a result, it spends significant time introducing ideas that should already be familiar to graduate students in physics. For example, I will use relevant ideas from statistical physics, such as Gibbs' free energy and Boltzmann factors, and you can refer to Nelson's book if you feel that you need a more detailed review than what I present in class.

        Kim Sneppen and Giovanni Zocchi, Physics in Molecular Biology, (Cambridge University Press, 2005).

Basic topics in statistical physics and molecular biology selected to build up to more specialized discussions of  molecular motors, genetic regulation, protein networks and evolution. Although the focus is narrower than the above books, I find this book unusually readable because of the concise presentation, coupled to example exercises (absent in many of the books listed) and references for further reading.

        Meyer Jackson, Molecular and Cellular Biophysics, (Cambridge University Press, 2006).

Emphasizes mathematical modelling of biological molecules and their interactions, often in greater detail. I find this an excellent reference, with more detail than needed for an entry-level textbook.

Nelson, Sneppen and Zocchi, and Jackson are strong on theoretical approaches using statistical mechanics, but make little or no use of quantum mechanics, which we will use to discuss experimental techniques from physics, such as spectroscopy and scattering, and biological reactions such as electron and proton transfer.

You can find much more extensive coverage of biological and biochemical topics than will be presented in this course in several books that are available online at the NCBI Bookshelf at the NIH. These virtual textbooks are excellent resources as references, but you may want to purchase the actual textbook if you plan to read large sections. The following are particularly relevant to this class:

        Alberts, Bruce; Johnson, Alexander; Lewis, Julian; Raff, Martin; Roberts, Keith; Walter, Peter. Molecular Biology of the Cell, (Garland Science, 2002).
        Berg, Jeremy M.; Tymoczko, John L.; and Stryer, Lubert. Biochemistry, (W. H. Freeman, 2002).
        Brown, T.A. Genomes, (Garland Science, 2002).


Assignments

Problem sets will be distributed throughout the semester (no more than once a week).

Assignment 1 (due September 14)
Assignment 2 (due September 21) solution
Assignment 3 (due September 28) solution
Assignment 4 (due October 5) solution
Assignment 5 (due October 12) solution
Assignment 6 (due October 19) solution
Assignment 7 (due October 26) solution
Assignment 8 (due November 7) with associated files: Lovellfig7.jpg, helix.pdb, and Ala3.pdb and solution: pg 1, pg 2, pg 3, pg 4
Assignment 9 (due November 14) solution
Assignment 10 (due November 21) solution
Assignment 11 (due November 28) solution
Assignment 12 (due December 5) solution
Assignment 13 (due December 10) solution
You may submit either Assignement 12 or 13 for credit. If you submit both, you will receive the higher of the two scores.


Grading


Your grade will be determined by homework problems and by two exams, with the following weights:  


Homework
60%
Midterm exam
20%
Final exam
20%



 

Course Topics


Cellular Organization and Biological Macromolecules


Basic Physics at the Cellular and Molecular Level

------->What makes "soft" matter soft?


Molecular Interactions and Macromolecular Structure

------->How do complex biomolecules self-assemble?


Physical Techniques

------->Where are the atoms, and when?


Biomolecular Dynamics

------->How does the machinery work?

The URL for this page is: http://www.atsweb.neu.edu/physics/j.sage/fall07/biolphys.html
page last updated December 6, 2007