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APh161 - Physics of Biological Structure and Function

Rob Phillips

picture

Myosin V (blue), a biomolecular motor that moves in nanometer-size steps on actin (red), transports cargo within cells
Source: http://www.news.uiuc.edu/scitips/03/0605selvin.html


[ Announcements | Class Schedule | Course Outline and Bibliography | Lecture Notes | Assignments | Contact ]


Announcements


Class Schedule


Course Outline and Bibliography

Interdisciplinary research:
  • Ares M. Jr, Interdisciplinary research and the undergraduate biology student, Nat Struct Mol Biol. 2004 Dec;11(12):1170-2.
  • Cech TR, Rubin GM, Nurturing interdisciplinary research, Nat Struct Mol Biol. 2004 Dec;11(12):1166-9.
  • Cohen JE, Mathematics Is Biology's Next Microscope, Only Better; Biology Is Mathematics' Next Physics, Only Better, PLoS Biology, 2004 Dec;2(12):e439.

Reading Material

Lecture 1:

Lecture 2 :

Lecture 3:
  • Mogilner A, Oster G, Polymer Motors: Pushing out the Front and Pulling up the Back, Curr. Biol., 2003 September 16;13:R721.
  • Tilney LG, Portnoy DA, Actin Filaments and the Growth, Movement, and Spread of the Intracellular Bacterial Parasite, Listeria monocytogenes, J. Cell Biol., 1989 October;109:1597.
    See figs. 14-17 for images of Listeria in infected cells.
  • Theriot JA, Mitchison TJ, Tilney LG, Portnoy DA, The rate of actin-based motility of intracellular Listeria monocytogenes equals the rate of actin polymerization, Nature, 1992 May 21;357:257.
    This paper is the basis of the estimate we did in class of the rate of actin polymerization using observed speeds of Listeria.

Lecture 4:
  • Sheperd N, Dennis P, Bremer H, Cytoplasmic RNA Polymerase in Escherichia coli, J. Bacteriol., 2001 April;183(8):2527.
    This paper discusses the census of RNAP in the cell.
  • Dove SL, Joung JK, Hochschild A, Activation of prokaryotik transcription through arbitrary protein-protein contacts, Nature, 1997 April 10;386:627.
    This paper is an example of the use of the beta galactosidase activity as a measure of gene expression.
  • Ackers GK, Johnson AD, Shea MA, Quantitative model for gene regulation by lambda phage repressor, PNAS, 1982;79:1129.
    This paper pioneered the use of the so-called thermodynamic models to examine gene expression.

Lecture 5:

Lecture 6:
  • Oehler S, Amouyal M, Kolkhof P, von Wilcken-Bergmann B, Mueller-Hill B , Quality and position of the three lac operators of E. Coli define efficiency of repression, EMBO J., 1994;13(14):3348.
    DNA looping in the lac operon by mutating binding sites.
  • Mueller J, Oehler S, Mueller-Hill B , Repression of lac Promoter as a Function of Distance, Phase and Quality of an Auxiliary lac Operator, JMB, 1996;257:21.
    DNA looping in the lac operon as a function of the distance between operators.
    This paper is a beautiful experiment which shows how repression depends upon the distance between the two operators.
  • Vilar JMG, Leibler S , DNA Looping and Physical Constraints on Transcription Regulation, JMB, 2003;331:981.
    Modeling of the experiment in Oehler et al. (1994) using a thermodynamic model.
  • Buchler NE, Gerland U, Hwa T , On schemes of combinatorial transcription logic, PNAS, 2003 April 29;100(9):5136.
  • Bruinsma RF , Physics of protein-DNA interaction, Physica A, 2002;313:211.
  • T. Cremer and C. Cremer, Chromosomes territories, nuclear architecture, and gene regulation in mammalian cells, Nature Reviews: Genetics, 2001 April;2:292-301.

Lecture 7:

Lecture 8:

Lecture 9:

Lecture 10:

Lecture 11:
  • Mitosis World, Stunning movies which reveal the activities of the cytoskeleton during cell division.

Lecture 14:

Lecture 15:
  • Dogterom M, Leibler S, Physical Aspects of the Growth and Regulation of Microtubule Structures, Phys. Rev. Lett., 1993 March 1;70(9):1347.
    A simple phenomenological model of the steady-state distribution of microtubule lengths.
  • Kuchnir Fygenson D, Braun E, Libchaber A, Phase diagram of microtubules, Phys. Rev. E, 1994 August;50(2):1579.
    Fig. 1 shows an experimental time series for the length of microtubules as a function of time, fig. 6 shows the distribution of microtubule lengths.
  • Flyvbjerg H, Holy TE, Leibler S, Stochastic Dynamics of Microtubules: A Model cor Caps and Catastrophes, Phys. Rev. Lett., 1994 October 24;73(17):2372.
    This model treats the dynamics of the cap of GTP tubulin in microtubules.
  • Flyvbjerg H, Holy TE, Leibler S, Microtubule dynamics: Caps, catastrophes, and coupled hydrolysis , Phys. Rev. E, 1996 November;54(5):5538.
  • Carlier MF, Pantaloni D, Control of Actin Dynamics in Cell Motility , J. Mol. Biol., 1997;269:459.
  • Pollard TD, Rate Constants for the Reactions of ATP- and ADP-Actin with the Ends of Actin Filaments, J. Cell Biol., 1986 December;103(2):2747.

Lecture 16:
  • Thomas N, Imafuku Y, Tawada K, Molecular motors: thermodynamics and the random walk, Proc R Soc Lond B Biol Sci. 2001 Oct 22;268(1481):2113.
  • Fisher ME, Kolomeisky AB, The force exerted by a molecular motor, PNAS, 1999 June;96:6597.
  • Gross SP, Hither and yon: a review of bi-directional microtubule-based transport, Phys. Biol., 2004;1:R1.
  • Fisher ME, Kolomeisky AB, Simple mechanochemistry describes the dynamics of kinesin molecules, PNAS, 2001 July 3;98(14):7748.
  • Huxley HE, Fifty years of muscle and the sliding filament hypothesis, Eur. J. Biochem., 2004;271:1403.
  • Mahadevan L, Matsudaira P, Motility Powered by Supramolecular Springs and Ratchets, Science, 2000 April 7;288:95.
    This paper describes classes of motors other than the translational motors described in class.
  • Schliwa M, Woehlke G, Molecular motors, Nature, 2003 April 17;422:759.
  • Schnitzer MJ, Block SM, Kinesin hydrolyses one ATP per 8-nm step, Nature, 1997 July 24;388:386.
  • Vale RD, Milligan RA, The Way Things Move: Looking Under the Hood of Molecular Motor Proteins, Nature, 2000 April 7;288:88.
  • Vale RD, The Molecular Motor Toolbox for Intracellular Transport, Cell, 2003 February 21;112:467.
  • Woehlke G, Schliwa M, Walking on two heads: the many talents of kinesin, Nature Reviews, 2000 October;1:50.
  • Yildiz A, Forkey JN, McKinney SA, Ha T, Goldman YE, Selvin PR, Myosin V Walks Hand-Over-Hand: Single Fluorophore Imaging with 1.5-nm Localization, Science, 2003 June 27 ;300:2061.
  • Kinosita Lab Movies, cool single molecule movies of the action of molecular motors.
  • Heuser Lab Galleries, this site includes some of the classic electron micrographs of muscle and muscle proteins.

Lecture 17:

Lecture 18:

Lecture 19:
  • Nilsson DE, Pelger S, A Pessimistic Estimate of the Time Required for an Eye to Evolve, Proc. Roy. Soc Lond., 1994 Apr 22;256(1345):53.
  • Sens P, Turnery MS, Theoretical Model for the Formation of Caveolae and Similar Membrane Invaginations, Biophysical Journal, 2004 Apr;86:2049.

Homeworks

  • HW1, Due on Tuesday, January 18
  • HW2, Due on Thursday, January 27
  • HW3, Due on Thursday, February 3
  • HW4, Due on Thursday, February 10
  • HW5, Due on Tuesday, February 22
  • HW6, Due on Tuesday, March 1
  • HW7, Due on Tuesday, March 8
  • HW8, Due on Friday, March 11

Solutions


Lecture notes


Contact Information

Rob Phillips
221 Steele
x3374
phillips AT pboc.caltech

Hernan Garcia
230 Steele
x5876
hgarcia AT caltech
Office hours: Mondays 3-5pm @ 230 Steele

Rizal Hariadi
210A Moore
x6994
reez AT caltech
Office hours: Mondays 3-5pm @ 230 Steele

Mandar M. Inamdar
226 Steele
x3106
mandar AT caltech
Office hours: TBA