Regulation of ion channel

Slides:

Advertisements

Similar presentations

Outline Neuronal excitability Nature of neuronal electrical signals Convey information over distances Convey information to other cells via synapses Signals.

Advertisements

Outline Neuronal excitability Nature of neuronal electrical signals Convey information over distances Convey information to other cells via synapses Signals.

Objectives Electrophysiology

Essential Animal Cell Biology Department of Biomedical Sciences

Dr. Hammoudi??? Are You Smarter Than Dr. Hammoudi?

Gated Ion Channels Ahu Karademir Andrei Vasiliev.

Nerves, hormones and homeostasis

The Electrical Nature of Nerves

Lecture 5: Membrane transport

Membrane Transport Chapter 11. Transcellular transport of glucose.

Lecture 4 BIO 344 Chapter 10 and 11.

Neurons & Neuroanatomy What are the characteristics of neurons important for Cognitive Neuroscience? What is the brain structure important for CogNeuro?

Membrane transport: The set of transport proteins in the plasma membrane, or in the membrane of an intracellular organelle, determines exactly what solutes.

Ion Pumps and Ion Channels CHAPTER 48 SECTION 2. Overview  All cells have membrane potential across their plasma membrane  Membrane potential is the.

7 December 2014 CHANNELS OF THE NEURON: ACTING ON IMPULSE.

Nervous systems. Keywords (reading p ) Nervous system functions Structure of a neuron Sensory, motor, inter- neurons Membrane potential Sodium.

Nervous System Neurophysiology.

Synaptic Signaling & The Action Potential

Cell Membranes Animal cells have a cell membrane that separates them from the environment Cell membranes are phospholipid bilayers with associated proteins.

The Nervous System AP Biology Unit 6 Branches of the Nervous System There are 2 main branches of the nervous system Central Nervous System –Brain –Spinal.

Passive Transport Section 4.1.

Membrane Transport1 Not responsible for: Nernst Equation, other than to know what it’s used for. Chapter 12 Membrane Transport Questions in this chapter.

AP Biology Cell Junctions and Cell Communication Where cells touch each other…

Action Potential: Overview The action potential (AP) is a series of rapidly occurring events that change and then restore the membrane potential of a cell.

CELLULAR TRANSPORT Chapter 3, Section 2.

ACTION POTENTIALS Chapter 11 Part 2 HONORS ANATOMY & PHYSIOLOGY.

Structures and Processes of the Nervous System – Part 2

Membrane Protein Channels

Sodium-Potassium pumps The cell membrane as an electrical battery.

Diffusion Through Cell Boundaries Every living cell exists in a liquid environment that it needs to survive. One of the most important functions of the.

Chapter 35-2 Nervous System.

Biology Chapter 3 3B-2 Transportation Across the Membrane.

Membrane Protein Channels Potassium ions queuing up in the potassium channel Pumps: 1000 s -1 Channels: s -1.

AH BIOLOGY: CELLS AND PROTEINS- PPT 6 MEMBRANE PROTEINS: CHANNEL AND TRANSPORT PROTEINS.

Principles of Bioelectricity. Key Concepts The cell membrane is composed of a phospholipid bilayer The cell membrane may have transport channels (made.

1 Back to Biochemistry… diffusion (passive, through PLBL) facilitative diffusion (passive, through channels) channels come in several flavors: ligand-gated.

Afferent Nerves Efferent Nerves cell body: cell body: central part of cell; contains the nucleus axon: axon: long slender extension from cell body; used.

Neurons and Synapses 6.5. The Nervous System Composed of cells called neurons. These are typically elongated cells that can carry electrical impulses.

Synapses. C. Action potential reaches the end of a presynaptic neuron. F. Voltage gated calcium channels open D. Calcium ions flow into the presynaptic.

Ions channels definition of ion channels: A protein that acts as a pore in a cell membrane and permits the selective passage of ions (such as potassium.

The Nervous System.

Cell membranes are composed of two phospholipid layers.

Animal Cell Chromatin.

3.D.3 Signal Transduction Signal transduction pathways link signal reception with cellular response.

Neurons, Signals, Synapses

Cell Communication.

Ionic Generation of Electrical Signals

Action Potential Propagation

Functional Overview of the Nervous System

Ionic Generation of Electrical Signals

Nerve Impulses.

Animal Cell Chromatin.

TEK B.4B Concept: Investigate and Identify Processes Including Transportation of Molecules 11/24/2018.

Cell Communication REVIEW.

Neuron Physiology.

Electrical Current and the Body

Plasma Membrane Proteins

Cell to Cell Communication via Ion-Channel Linked Receptors

AH Biology: cells and proteins- PPT 6

Electrical properties of the cell membrane

Action Potentials Department of Biology, WCU.

The Nervous System AP Biology Unit 6.

Ion Gradients and Nerve Transmission

Gates + Potentials.

Animal Cell Cell Membrane.

Voltage-gated ion channels Transmembrane ion channels regulated by changes in membrane potential

Action Potential.

Electrical Signals, Sensory Systems, and Movement

Presentation transcript:

Regulation of ion channel Presented by Bódis Viktor

Ion channel located within the plasma membrane Pore-forming membrane protein Functions: Regulate the ion flow establishing resting membrane potential shaping action potential Rate of ion transport is very high Ion pass along contretracion gradient Passiv transport Ion channel classification by selectivity: Selective Less-selective Non-selective

Classification by gating Voltage-gated Ligand/G-protein -gated different concentration of ions on either side of the membrane. binding of ligands/G protein to the channel

Voltage-gated ion channel Triggered by changing ion contrentration Act in propagation of action potential Ball and chain inactivation

Neurotransmitter receptor Ligand gated ion channel Bind the neurotransmitter Located at synapses G protein-gated ion channel Inhibitory/excitatory

Thank you for your attention! http://web.mit.edu/9.013/www/lectures/01-02_MS_Ion_Channels.pdf http://phcol.szote.u-szeged.hu/jegyzet/elphys/Structure%20of%20ion%20channels.pdf https://en.wikipedia.org/wiki/Ligand-gated_ion_channel http://biophys.med.unideb.hu/sites/default/files/3_ioncsatornak_memb_pot_2012.pdf https://en.wikipedia.org/wiki/Ball_and_chain_inactivation https://www.studyblue.com/notes/note/n/exam-2/deck/1245341