BIOLOGY 151 Chapter Notes - Chapter 11: Middle Lamella, Tight Junction, Cell Adhesion
13 Sep 2013
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The structure and function of an extracellular layer. Integrins connect the cytoskeleton of each cell to the extracellular matrix. Tight junctions form a seal between cells. Tight junction: cell-cell attachment of specialized protein in the plasma membrane of adjacent animal cell. Commons in animal epithelial cells, and muscle cells. Antibody: protein produced by immune response that binds to unique molecule type. Animal cells attach to one another in a selective manner because different types of cell adhesion proteins can bind and rivet certain cells together. Calherins provide the physical basis for selective adhesion in many cells are crucial component of the desmosomes that join mature cells. Signals may alter with proteins are produced and which are not, by regulating genee expression. Signals may sctivate or deactivate particular proteins that already exist in the cell often those involved in metabolism membrane transport secretioin and they cytoskeleton. Gap junctions connect cells via protein channel.
