Lecture 6 Thurs 4-13-06
... membranes, either on the same membrane (cis) or different membranes (trans). SNAREs alone can cause fusion of membranes, although most likely in cells they act as direct catalysts of fusion along with other regulatory and triggering proteins. ...
... membranes, either on the same membrane (cis) or different membranes (trans). SNAREs alone can cause fusion of membranes, although most likely in cells they act as direct catalysts of fusion along with other regulatory and triggering proteins. ...
Chapter 2
... Lipid Rafts, Cholesterol, and Membrane Fluidity Regions of the plasma membrane called “lipid rafts” have high concentrations of cholesterol. Consequently, the proteins in lipid rafts a) diffuse more freely in the membrane. ...
... Lipid Rafts, Cholesterol, and Membrane Fluidity Regions of the plasma membrane called “lipid rafts” have high concentrations of cholesterol. Consequently, the proteins in lipid rafts a) diffuse more freely in the membrane. ...
Cannabinoid Signaling and Lipid Rafts
... Cannabinoid Signaling and Lipid Rafts More evidence is showing that CB1 receptor binding, signaling, anandamide transport, and 2-AG synthesis is influenced by lipid rafts. The plasma membrane is a highly disordered phospholipid by-layer that consists of compartmentalized microdomains. These microdom ...
... Cannabinoid Signaling and Lipid Rafts More evidence is showing that CB1 receptor binding, signaling, anandamide transport, and 2-AG synthesis is influenced by lipid rafts. The plasma membrane is a highly disordered phospholipid by-layer that consists of compartmentalized microdomains. These microdom ...
Cell Membrane Diffusion
... The Special Case of Water Movement of water across the cell membrane ...
... The Special Case of Water Movement of water across the cell membrane ...
RBC_memb
... Sphingomyelin and Phosphatidyl serine. Phospholipid molecules are characterized by a polar head group attached to a non-polar fatty acid tail. The polar head group is hydrophilic ( water loving), while the fatty acid tail is hydrophobic (water fearing). Thus the phospholipids in the cell membrane te ...
... Sphingomyelin and Phosphatidyl serine. Phospholipid molecules are characterized by a polar head group attached to a non-polar fatty acid tail. The polar head group is hydrophilic ( water loving), while the fatty acid tail is hydrophobic (water fearing). Thus the phospholipids in the cell membrane te ...
Membranes
... Cholesterol can be found in the hydrophobic region (fatty acid tails) in animal cells. They determine membrane fluidity, which changes with temperature, allowing effective membrane function at a wider range of temperatures Plant cells, don’t have cholesterol, so they rely on saturated or unsaturate ...
... Cholesterol can be found in the hydrophobic region (fatty acid tails) in animal cells. They determine membrane fluidity, which changes with temperature, allowing effective membrane function at a wider range of temperatures Plant cells, don’t have cholesterol, so they rely on saturated or unsaturate ...
Using Bubbles to Explore Cell Membranes
... barriers- certain molecules can pass through them. They are called “selectively permeable” because some molecules are allowed to pass through, but others are not. What types of molecules do you think need to pass through the cell membrane? The cell membrane consists of two layers. It has a double la ...
... barriers- certain molecules can pass through them. They are called “selectively permeable” because some molecules are allowed to pass through, but others are not. What types of molecules do you think need to pass through the cell membrane? The cell membrane consists of two layers. It has a double la ...
Lecture 4
... 3. axons project to and from the body (CNS PNS) 4. cell bodies in CNS except some in ganglia ...
... 3. axons project to and from the body (CNS PNS) 4. cell bodies in CNS except some in ganglia ...
Physiologic factors related to drug absorption
... Physiologic factors related to drug absorption Dr Mohammad Issa ...
... Physiologic factors related to drug absorption Dr Mohammad Issa ...
Document
... Endocytosis is the process by which cells ingest external fluid, macromolecules, and large particles, including other cells. These external materials are enclosed by a portion of the cell’s membrane, which folds into itself and forms a pouch. The pouch then pinches off from the cell membrane and bec ...
... Endocytosis is the process by which cells ingest external fluid, macromolecules, and large particles, including other cells. These external materials are enclosed by a portion of the cell’s membrane, which folds into itself and forms a pouch. The pouch then pinches off from the cell membrane and bec ...
Membrane Structure and Function
... • A transmembrane protein that helps a certain substance to cross the membrane • The transport protein is specific for the substances it moves across the membrane • Some have hydrophilic channels that substances move through, others hold onto to the “passengers” and physically move them across the m ...
... • A transmembrane protein that helps a certain substance to cross the membrane • The transport protein is specific for the substances it moves across the membrane • Some have hydrophilic channels that substances move through, others hold onto to the “passengers” and physically move them across the m ...
Active Transport
... around each cell so that the water-loving heads are in contact with the fluid, and the waterfearing tails are protected on the inside. ...
... around each cell so that the water-loving heads are in contact with the fluid, and the waterfearing tails are protected on the inside. ...
lecture 5
... The nuclear envelope contains pores that allow substances to enter and exit the nucleus to and from the cytoplasm. The nuclear envelope is attached to the endoplasmic reticulum, which often has attached ribosomes, where protein synthesis ...
... The nuclear envelope contains pores that allow substances to enter and exit the nucleus to and from the cytoplasm. The nuclear envelope is attached to the endoplasmic reticulum, which often has attached ribosomes, where protein synthesis ...
CE James and JM. Pagès
... reconstituted into planar lipid membranes and translocation characteristics of various lactams were investigated by analysing transient current blockages in their presence. Concentration dependent ion current fluctuations were observed when ertapenem and cefepime were added to the system, suggestin ...
... reconstituted into planar lipid membranes and translocation characteristics of various lactams were investigated by analysing transient current blockages in their presence. Concentration dependent ion current fluctuations were observed when ertapenem and cefepime were added to the system, suggestin ...
Cell Boundaries - Duplin County Schools
... PRESSURE acting on the hypertonic side of the membrane • Cells have salts, sugars, proteins, and other solutes dissolved in the cytoplasm, making the inside of cells hypertonic to fresh/distilled water; if not checked, water entering the cell can make it swell to the point of bursting ...
... PRESSURE acting on the hypertonic side of the membrane • Cells have salts, sugars, proteins, and other solutes dissolved in the cytoplasm, making the inside of cells hypertonic to fresh/distilled water; if not checked, water entering the cell can make it swell to the point of bursting ...
General protein images
... • Flickr images that we have used have a Creative Commons Attribution 4.0 licence, meaning we – and you – are free to use in any way as long as the original owner is credited. • Cartoon illustrations are © Glen McBeth. We commission Glen to produce these illustrations for ‘Big Picture’. He is happy ...
... • Flickr images that we have used have a Creative Commons Attribution 4.0 licence, meaning we – and you – are free to use in any way as long as the original owner is credited. • Cartoon illustrations are © Glen McBeth. We commission Glen to produce these illustrations for ‘Big Picture’. He is happy ...
sample_abstract
... implicated in the pathogenesis of insulin resistance in liver and adipose tissue. Autophagy is a catabolic process responsible for the degradation of long-lived proteins, damaged organelles such as defective mitochondria, and lipid droplets (LDs). We hypothesize a role for defective autophagy in rel ...
... implicated in the pathogenesis of insulin resistance in liver and adipose tissue. Autophagy is a catabolic process responsible for the degradation of long-lived proteins, damaged organelles such as defective mitochondria, and lipid droplets (LDs). We hypothesize a role for defective autophagy in rel ...
comparative geometry of cytomembranes and water-lipid
... closed vesicle, but its total area is much larger than that of the outer membrane and presents therefore several internal folds or tubes, which are both calld cristae. Cells and Geometry There are many examples of regularly distributed arrangements of bilayers, differentiated at the level of the out ...
... closed vesicle, but its total area is much larger than that of the outer membrane and presents therefore several internal folds or tubes, which are both calld cristae. Cells and Geometry There are many examples of regularly distributed arrangements of bilayers, differentiated at the level of the out ...
Model lipid bilayer
A model lipid bilayer is any bilayer assembled in vitro, as opposed to the bilayer of natural cell membranes or covering various sub-cellular structures like the nucleus. A model bilayer can be made with either synthetic or natural lipids. The simplest model systems contain only a single pure synthetic lipid. More physiologically relevant model bilayers can be made with mixtures of several synthetic or natural lipids.There are many different types of model bilayers, each having experimental advantages and disadvantages. The first system developed was the black lipid membrane or “painted” bilayer, which allows simple electrical characterization of bilayers but is short-lived and can be difficult to work with. Supported bilayers are anchored to a solid substrate, increasing stability and allowing the use of characterization tools not possible in bulk solution. These advantages come at the cost of unwanted substrate interactions which can denature membrane proteins.