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Cell-Cell Signaling. Neurotransmitters. Ligand-Gated Na + Channel. Post-synaptic membrane. Target Cell. Signal Transduction Pathway of Target Cell. Receptor Tyrosine Kinase-MAP Kinase Pathway. Receptor Tyrosine Kinase (RTK) Activation. (GEF). (RTK). RTKs Bound to Signal Molecule.
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Ligand-Gated Na+ Channel Post-synaptic membrane
Receptor Tyrosine Kinase (RTK) Activation (GEF) (RTK)
Activation of Ras Protein Kinase Cascade (GEF)
Kinase Cascade (MKKK) (MKK) Target Proteins
Tumor Progression Pg. 729
Colonize New Tissues Pg. 727
Tumor Growth Pg. 736
Normal Ras and Oncogenic Ras Normal Ras Oncogenic Ras
Post-Translational Modfication of Ras Ras FTase
Therapy for “Ras-Positive” Tumors Ras FTase Inhibitors FTase
Signal Transduction Pathways and Cell Differentiation Stem Cell Specialized cell type (neuron, skin cell, red blood cell, etc.)
EPO Synthesis of proteins that stimulate Red Blood Cell development
Cell Types Heart muscle Skeletal muscle Thyroid Ovary Kidney Intestinal epithelia Seven-Pass Receptors Adrenaline Glucogon TSH, LH Contraction Glycogen breakdown Hormone secretion Water retention Ion transport Pg. 546
Synthesis of cyclic AMP Adenylyl Cyclase ATP cyclic AMP Pg. 550
Targets Ion Channels Transcription Factors Enzymes
Cholera Toxin G.I. Tract G∂ “ON”
Cytoskeletal Structures Intermediate filaments Microtubules Actin Chapter 17
GTP Tubulin Dimer GTP
Microtubule “Poisons” Colchicine Taxol (Autumn crocus) (Pacific Yew)
GTP Tubulin Dimer GTP Taxol
Microtubules Vesicle Transport Chromosome segregation (mitotic spindle) Cilia/Flagella
Arp2/3 (Actin Related Proteins) Arp2 Arp3