Tags: ion channels

All Categories (1-20 of 24)

  1. [Illinois] Biophysics 401 Lecture 24: Ion Channels III

    10 Dec 2015 | | Contributor(s):: Paul R Selvin

  2. [Illinois] Biophysics 401 Lecture 23: Ion Channels II

    07 Dec 2015 | | Contributor(s):: Paul R Selvin

  3. [Illinois] Biophysics 401 Lecture 22: Ion Channels I

    03 Dec 2015 | | Contributor(s):: Paul R Selvin

  4. Ionic Interactions in Biological and Physical Systems: a Variational Treatment

    15 Feb 2014 | | Contributor(s):: Bob Eisenberg

    All biology occurs in ionic mixtures loosely called Ringer solutions. Biology depends on interactions of ions. Interactions of Na+, K+, and Ca2+ with channel proteins produce electrical signals of nerves and coordinate muscle contraction including the heart. Proteins, channels, and nucleic acids...

  5. Mathematics of Ions in Channels and Solutions: Stochastic Derivations, Direct, Variational and Inverse Solutions that fit Data

    05 Feb 2014 | | Contributor(s):: Bob Eisenberg

    Literally thousands of biologists study the properties of channels in experiments every day. My collaborators and I have shown how the relevant equations can be derived (almost) from stochastic differential equations, and how they can be solved in inverse, variational, and direct problems using...

  6. [Illinois] Coarse-grained Simulation of Ion Channels

    29 Dec 2012 | | Contributor(s):: Umberto Ravaioli

    This Summer School will train students in molecular simulation and simulation at multiple time and length scales. Instruction will be provided on quantum Monte Carlo simulation, molecular dynamics, coarse-grained simulations, and multiscale simulations with opportunities for hands-on experience...

  7. [Illinois] Coarse-grained Simulation of Ion Channels

    19 Jun 2012 | | Contributor(s):: Umberto Ravaioli

  8. Discussion about Ion Channels Using Reduced Model Approaches

    21 Sep 2011 | | Contributor(s):: James Fonseca

    The seminar will cover the reasons how the channels are able to selectively permit the flow of certain species of ions while blocking other physiological cations.

  9. Illinois iOptics Lecture 1: Super Accuracy and Super-Resolution of Molecular Motors and Ion Channels

    16 Apr 2010 | | Contributor(s):: Paul R Selvin

    The standard diffraction limit of light is about 250 nm, meaning that you cannot "resolve" objects closer than this distance. Despite this, we have come up with a method to measure individual biomolecules with 1.5 nm spatial localization in x-y plane and 1-500 msec temporal resolution,...

  10. Hierarchy of Simulation Approaches for Charge Transport Simulation

    01 Aug 2008 | | Contributor(s):: Omar N Sobh, Umberto Ravaioli

    General considerationsModel simulation hierarchyContinuum modelParticle Transport Monte Carlo modelExamples of simulationsUmberto Ravaioli - University of Illinois, Urbana-ChampaignNCN@Purdue Student Leadership TeamNetwork for Computational NanotechnologyThe Institute for Nanoelectronics and...

  11. Ionic Selectivity in Channels: complex biology created by the balance of simple physics

    05 Jun 2008 | | Contributor(s):: Bob Eisenberg

    An important class of biological molecules—proteins called ionic channels—conduct ions (like Na+ , K+ , Ca2+ , and Cl− ) through a narrow tunnel of fixed charge (‘doping’). Ionic channels control the movement of electric charge and current across biological membranes...

  12. Lecture 23: Vision

    26 Apr 2008 | | Contributor(s):: Paul R Selvin

    Summary of Ion Channels, Vision , Visual System, The Eye, Structure of the Eye, Signal Processing, Diffraction and Pupil

  13. Lecture 21: Nerves

    24 Apr 2008 | | Contributor(s):: Paul R Selvin

    Ion Channels,Ionic current, Gating current, Digital Ion Channels, Structural studies, X-ray Crystallography

  14. Lecture 22: Conformational Changes in Ion Channels

    24 Apr 2008 | | Contributor(s):: Paul R Selvin

    Voltage dependence, Spontaneous shut-off, Nerve Impulse propagation, Structure Pore Domain, Voltage Sensor

  15. P-N Semiconductor Membranes for Ion Filtering and Rectification

    06 Apr 2008 | | Contributor(s):: J. P. Leburton

    Jean-Pierre Leburton's research at the Beckman Institute deals with transport and optical processes in semiconductor nanostructures such as quantum wires and quantum dots that exhibit a high degree of quantization dependent on the semiconductor materials and geometrical confinement. This...

  16. Ion Selectivity in Synthetic and Natural Channels

    31 Mar 2008 | | Contributor(s):: Susan Rempe

    Transport across membranes and nanopores can be characterized by static equilibrium properties as well as by nonequilibrium dynamic properties. For example, equilibrium selectivity properties of a nanopore can be characterized by the difference in interaction free energy for transferring one ion...

  17. Spectroscopy and Modeling to Infer Channel Structure and Function

    23 Mar 2008 | | Contributor(s):: Vishwanath Jogini

    We are particularly interested in issues about ion permeation, ion selectivity, gating, and channel inhibitors. We are currently working on the KcsA channel, the OmpF porin, and the gramicidin A> channel. We are also spending our efforts in the development of new computational approaches for...

  18. biomoca

    30 May 2006 | | Contributor(s):: Reza Toghraee, Umberto Ravaioli

    Ion channel simulator

  19. BioMOCA Suite

    04 Feb 2008 | | Contributor(s):: David Papke, Reza Toghraee, Umberto Ravaioli, Ankit Raj

    Simulates ion flow through a channel.

  20. Computing the Horribleness of Soft Condensed Matter

    19 Oct 2007 | | Contributor(s):: Eric Jakobsson

    A great triumph of computer simulations 40 years ago was to make the liquid state of matter understandable in terms of physical interactions between individual molecules. Prior to the first simulations of liquid argon and liquid water in the 1960's, there was no quantitatively rigorous molecular...