CELL-TO-CELL JUNCTIONS Michaela Tiffany. SURFACE MARKERS Structure: Variable, integral proteins or...
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Transcript of CELL-TO-CELL JUNCTIONS Michaela Tiffany. SURFACE MARKERS Structure: Variable, integral proteins or...
![Page 1: CELL-TO-CELL JUNCTIONS Michaela Tiffany. SURFACE MARKERS Structure: Variable, integral proteins or glycolipids in plasma membrane Function: Identify the.](https://reader035.fdocuments.in/reader035/viewer/2022062805/5697c0261a28abf838cd57d5/html5/thumbnails/1.jpg)
CELL-TO-CELL JUNCTIONSMichaela Tiffany
![Page 2: CELL-TO-CELL JUNCTIONS Michaela Tiffany. SURFACE MARKERS Structure: Variable, integral proteins or glycolipids in plasma membrane Function: Identify the.](https://reader035.fdocuments.in/reader035/viewer/2022062805/5697c0261a28abf838cd57d5/html5/thumbnails/2.jpg)
SURFACE MARKERS
• Structure: Variable, integral proteins or glycolipids in plasma membrane
• Function: Identify the cell
• Example: MHC complexes, blood groups, antibodies
![Page 3: CELL-TO-CELL JUNCTIONS Michaela Tiffany. SURFACE MARKERS Structure: Variable, integral proteins or glycolipids in plasma membrane Function: Identify the.](https://reader035.fdocuments.in/reader035/viewer/2022062805/5697c0261a28abf838cd57d5/html5/thumbnails/3.jpg)
SEPTATE JUNCTIONS/TIGHT JUNCTIONS
• Structure: Tightly bound, leakproof, fibrous claudin protein seal that surrounds the cell
• Function: Holds cells together such that materials pass through not between the cells
• Example: Junctions between epithelial cells in the gut
![Page 4: CELL-TO-CELL JUNCTIONS Michaela Tiffany. SURFACE MARKERS Structure: Variable, integral proteins or glycolipids in plasma membrane Function: Identify the.](https://reader035.fdocuments.in/reader035/viewer/2022062805/5697c0261a28abf838cd57d5/html5/thumbnails/4.jpg)
ADHESIVE JUNCTION (DESMOSOME)
• Structure: Variant cadherins, desmocollins, blind to intermediate filaments of cytoskeleton
• Function: Creates strong flexible connections between cells• Found in vertebrates
• Example: Epithelium
![Page 5: CELL-TO-CELL JUNCTIONS Michaela Tiffany. SURFACE MARKERS Structure: Variable, integral proteins or glycolipids in plasma membrane Function: Identify the.](https://reader035.fdocuments.in/reader035/viewer/2022062805/5697c0261a28abf838cd57d5/html5/thumbnails/5.jpg)
ADHESIVE JUNCTION(ADHERENS JUNCTIONS)
• Structure: Classical cadherins, bind to microfilaments of cytoskeleton
• Function: Connects cells together • Oldest form of cell junction• Found in all multicellular organisms
• Example: Tissues with high mechanical stress, such as the skin
![Page 6: CELL-TO-CELL JUNCTIONS Michaela Tiffany. SURFACE MARKERS Structure: Variable, integral proteins or glycolipids in plasma membrane Function: Identify the.](https://reader035.fdocuments.in/reader035/viewer/2022062805/5697c0261a28abf838cd57d5/html5/thumbnails/6.jpg)
ADHESIVE JUNCTION (HEMIDESMOSOME, FOCAL ADHESION)
• Structure: Integrin proteins bind cell to extracellular matrix
• Function: Provide attachment to a substrate
• Example: Involved in cell movement and important during development
![Page 7: CELL-TO-CELL JUNCTIONS Michaela Tiffany. SURFACE MARKERS Structure: Variable, integral proteins or glycolipids in plasma membrane Function: Identify the.](https://reader035.fdocuments.in/reader035/viewer/2022062805/5697c0261a28abf838cd57d5/html5/thumbnails/7.jpg)
COMMUNICATING JUNCTION (GAP JUNCTION)
• Structure: Six transmembrane connexons/pannexin proteins creating a pore that connects cells
• Function: Allows passage of small molecules from cell to cell in a tissue
• Example: Excitable tissue such as heart muscle
![Page 8: CELL-TO-CELL JUNCTIONS Michaela Tiffany. SURFACE MARKERS Structure: Variable, integral proteins or glycolipids in plasma membrane Function: Identify the.](https://reader035.fdocuments.in/reader035/viewer/2022062805/5697c0261a28abf838cd57d5/html5/thumbnails/8.jpg)
COMMUNICATING JUNCTION (PLASMODESMATA)
• Structure: Cytoplasmic connections between gaps in adjoining plant cell walls
• Function: Communicating junctions between plant cells
• Example: Plant tissues
![Page 9: CELL-TO-CELL JUNCTIONS Michaela Tiffany. SURFACE MARKERS Structure: Variable, integral proteins or glycolipids in plasma membrane Function: Identify the.](https://reader035.fdocuments.in/reader035/viewer/2022062805/5697c0261a28abf838cd57d5/html5/thumbnails/9.jpg)
• All information in this power point can be found in Mgraw Hill Biology 10th Edition on pages 82-85