'Membrane proteins' diaporamas de présentation

Chapter 12

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Ch. 8 Membrane Structure & Function

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Outline

Outline. Membrane Models Fluid-Mosaic Plasma Membrane Structure and Function Phospholipids Proteins Plasma Membrane Permeability Diffusion Osmosis Transport Via Carrier Proteins Cell Surface Modifications. Structure and Function: The Phospholipid Bilayer.

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Outline

Outline. Membrane Models Fluid-Mosaic Plasma Membrane Structure and Function Phospholipids Proteins Plasma Membrane Permeability Diffusion Osmosis Transport Via Carrier Proteins Cell Surface Modifications. Structure and Function: The Phospholipid Bilayer.

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Biological Membranes

Biological Membranes. Biological membranes Complex, dynamic structures made of lipid and protein molecules Perform many functions Define cell as a compartment Regulate passage of materials Participate in chemical reactions Transmit signals between cell interior and the environment

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Reaction Mechanism: Chicken Egg White Lysozyme

Reaction Mechanism: Chicken Egg White Lysozyme. Enzyme responsible for degrading bacterial cell walls Hydrolyzes the glycosidic linkage between NAM and NAG. Mechanism: Chicken Egg White Lysozyme. Substrate fits in groove in enzyme. Binding Site. Mechanism: Chicken Egg White Lysozyme.

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The Cell Membrane

The Cell Membrane . Overview. Cell membrane separates living cell from nonliving surroundings thin barrier = 8nm thick Controls traffic in & out of the cell selectively permeable allows some substances to cross more easily than others hydrophobic vs hydrophilic

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CH 5: Cell Membranes

CH 5: Cell Membranes. Practice Test answers. The movement of a substance toward an area of lower concentration is called ________. diffusion osmosis active transport exocytosis. Which component in the cell membrane restricts the passage of water-soluble substances?. glycolipids protein

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Topic 2: Cells Topic 1: Cells Membranes

Topic 2: Cells Topic 1: Cells Membranes. blog.lib.umn.edu. Draw and label a diagram to show the structure of membranes (1). Explain passive transport across membranes by simple diffusion and facilitated diffusion (3).

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Class Grading data for Test 3 and Abstract Draft

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The Cellular Level of Organization

A. Generalized animal cell B. Plasma (cell) membrane 1. Membrane chemistry and anatomy a. Membrane lipids b. Membrane proteins 2. Membrane physiology a. Communication b. Electrochemical gradient

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Membrane Protein Structure Prediction and Visualization

Membrane Protein Structure Prediction and Visualization. Chuck Staben Jerzy Jaromczyk. Genbank Growth. Genomic View. Genome. Transcriptome. Protein. Structures Processes. Cell. Environment. Hypothesis. Bioinformatics-what is it?. DATA. Acquisition, curation, and analysis of

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Proteins

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MEMBRANE STRUCTURE AND FUNCTION

MEMBRANE STRUCTURE AND FUNCTION. Membrane Structure Chapter 7. Objectives. Be able to describe the structure of a membrane Be familiar with the structure and function of the lipid, protein, and carbohydrate components of a membrane Be familiar with the formation of a membrane.

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Biological Membranes and Transport

Biological Membranes and Transport. Functions of membranes Define cell boundaries, compartments Maintain electric and chemical potentials Self-sealing (break and reseal) Selectively permeable to polar solutes (retain charged species within membranes) Actively transport specific molecules

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Membranes

Membranes. membranes are composed of a lipid bilayer and associated proteins ~1/3 of a cell's proteins are directly associated with membranes many soluble proteins are contained within membrane bound organelles. Membrane Isolation and Characterization. selection of tissue

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Cell Membranes

Cell Membranes. Structure and Function. Animal Cell Membrane. Semi-permeable Membranes. Lipid membranes are semi-permeable, also called selectively permeable Water moves across the membrane freely Ions (charged particles) do not move across the membrane freely

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Nano-Bio-PhotoVoltaic Solid State Devices

Bottom-up NanoBiotechnology: from Membrane proteins to BioSolar Power. Nano-Bio-PhotoVoltaic Solid State Devices. Andreas Mershin Center For Biomedical Engineering. Lab for Molecular Self Assembly mershin@mit.edu , cookb@mit.edu http://web.mit.edu/lms/www/. October 12 th 2006

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2.4.3: List the functions of membrane proteins.

2.4.3: List the functions of membrane proteins. Hormone binding sites Immobilized enzymes Cell adhesion Cell to cell communication Channels for passive transport Pumps for active transport. IB question: List four different functions of membrane proteins. [4] .

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