My talk on the paper: A Bipedal DNA Brownian Motor with Coordinated Legs

Hello everyone

The paper I gave my presentation on was titled: A Bipedal DNA Brownian Motor with Coordinated Legs
By Tosan Omabegho, Ruojie Sha, Nadrian C. Seeman

A copy of it can be accessed at the websites below.

Abstract:
http://www.sciencemag.org/cgi/content/abstract/324/5923/67

Paper:
http://www.sciencemag.org.ezproxy.library.uq.edu.au/cgi/reprint/sci;324/5923/67?maxtoshow=&hits=10&RESULTFORMAT=&searchid=1&FIRSTINDEX=0&resourcetype=HWCIT.pdf

Practice final exam

Here is the final exam from last year.

Structure of the torque ring of the flagellar motor and the molecular basis for rotational switching

Hi all,

I will be presenting the paper titled "Structure of the torque ring of the flagellar motor and the molecular basis for rotational switching" by Lee et al on Wednesday. Have a look at some of the supplementary videos on this site - the torque ring in particular.

http://www.nature.com/nature/journal/v466/n7309/full/nature09300.html

Cheers,

Calvin

Our Video!

How do neurons perform calculations?

If the brain is analogous to a computer is it possible to describe a small number of neurons as similar to a logic gate? What would this analogy leave out?

Paper presentations

Before you presentation please post a link to the paper you will be discussing.
After the presentation (or even better before) post a copy of your presentation.

When axons get on your nerves

Thanks to the work of Camillo Golgi and Santiago Ramon y Cajal, we have been able to understand the functioning of neurons. Between each neuron is a synapse. On either side of this synapse is the presynaptic (axon) and the postsynaptic (dendrite) components. As it goes, information passes from the pre- to the post-synaptic side.


Axon Terminals are capable of releasing various neurotransmitters, which can be used to alter the membrane potential in another dendritic tree.
Arrivign action potentials at the presynaptic cleft can cause depolarization or hyperpolarization of the postsynaptic, based around the released neurotransmitters, and on the postsynaptics ion channels.
The synapse can be considered excitatory or inhibitory based on whether it is depolarizing of hyperpolarizing.Often, single action potentials just aren't good enough to do anything, soi cells incorporate integrate-and-fire model of neuron activity.