Tag Archives: biophysics

Microtubules and Mitosis Journal Club on Monday, August 26

For Microtubules and Mitosis Journal Club on August 26, members of the Drubin/Barnes Lab, Eva Nogales Lab, and Ahmet Yildiz Lab will discuss the following paper, selected by Itziar Ibarlucea:

Marking and Measuring Single Microtubules by PRC1 and Kinesin-4. Subramanian R, Ti SC, Tan L, Darst SA, Kapoor TM. Cell. 2013 Jul 18;154(2):377-90. PMID: 23870126.

Subramanian Cell 2013

graphical abstract of the paper

Microtubules and Mitosis Journal Club on Monday, June 24

For Microtubules and Mitosis Journal Club on April 25, members of the Drubin/Barnes Lab, Eva Nogales Lab, and Ahmet Yildiz Lab will discuss the following paper, selected by Stu Howes:

Synergy between XMAP215 and EB1 increases microtubule growth rates to physiological levels. Zanic M, Widlund PO, Hyman AA, Howard J. Nat Cell Biol. 2013 Jun;15(6):688-93. PMID: 23666085.

Zanic NCB 2013

Reaction scheme for an enzymatic reaction with two non-essential activators. The microtubule end is viewed as an enzyme that catalyses the reaction: tubulin in solution (substrate)→tubulin in the polymer (product) by providing a much more efficient pathway than direct incorporation into the lattice. XMAP215 and EB1 are viewed as two non-essential enzyme activators that accelerate the net rate of addition at the end. Filled arrows represent the flux of polymerization through a particular vertex. M, microtubule end; T, free tubulin; X, XMAP215; E, EB1.

Journal Club on Monday, June 17

For our Journal Club on June 17, Jessica Marks will present the following paper:

Iwamoto PNAS 2013

Hypothetical energy profiles for the closed and open transition states.

Amphipathic antenna of an inward rectifier K+ channel responds to changes in the inner membrane leaflet. Iwamoto M, Oiki S. Proc Natl Acad Sci U S A. 2013 Jan 8;110(2):749-54. PMID: 23267068.

Microtubules and Mitosis Journal Club on Thursday, April 25

For our new Microtubules and Mitosis Journal Club on April 25, members of the Drubin/Barnes Lab, Eva Nogales Lab, and Ahmet Yildiz Lab discussed the following paper, selected by Nate Krefman:

Estimating the microtubule GTP cap size in vivo. Seetapun D, Castle BT, McIntyre AJ, Tran PT, Odde DJ. Curr Biol. 2012 Sep 25;22(18):1681-7. PMID: 22902755

Example EB1 comet from an EB1-EGFP LLCPK1 cell and the corresponding fluorescence intensity (FI) linescan, blue line.

Journal Club on Monday, March 17

For our Journal Club on March 17, Rebecca Lu will present the following paper:

Robust polarity establishment occurs via an endocytosis-based cortical corralling mechanism. Jose M, Tollis S, Nair D, Sibarita JB, McCusker D. J Cell Biol. 2013 Feb 18;200(4):407-18. PMID: 23401000

Schematics illustrating the mathematical model. Shown are the Cdc42 autoamplification module (A), the complete endocytosis module (B), the exocytosis module (C), and a legend for graphics (D).

Journal Club on Monday, Feb. 7

For our Journal Club on February 7, Yansong Miao will present the following paper:

Rocket launcher mechanism of collaborative actin assembly defined by single-molecule imaging. Breitsprecher D, Jaiswal R, Bombardier JP, Gould CJ, Gelles J, Goode BL. Science. 2012 Jun 1;336(6085):1164-8. doi: 10.1126/science.1218062. PMID: 22654058

Journal Club on Monday, October 1

For our next Journal Club, Padmini Rangamani will present the following paper:

Phase transitions in the assembly of multivalent signalling proteins. Li P, Banjade S, Cheng HC, Kim S, Chen B, Guo L, Llaguno M, Hollingsworth JV, King DS, Banani SF, Russo PS, Jiang QX, Nixon BT, Rosen MK. Nature. 2012. PMID: 22398450

Journal Club on Thursday, July 26

For our next Journal Club, our summer undergraduate researcher Josh Johnson will present the following paper:

Aurora B dynamics at centromeres create a diffusion-based phosphorylation gradient.  Wang E, Ballister ER, Lampson MA.  J Cell Biol. 2011 Aug 22;194(4):539-49.  PMID: 21844210.

Journal Club on Monday, April 2

For our next Journal Club, Sun Hae Hong will present the following paper:

Influence of synaptic vesicle position on release probability and exocytotic fusion mode.  Park H, Li Y, Tsien RW.  Science.  2012 Mar 16;335(6074):1362-6.  PMID: 22345401.

Journal Club on Monday, March 05

For our last Journal Club, Itziar Benitez-Ibarlucea presented the following paper:

Cytoplasmic dynein moves through uncoordinated stepping of the AAA+ ring domains. DeWitt MA, Chang AY, Combs PA, Yildiz A. Science. 2012 Jan 13;335(6065):221-5. PMID: 22157083