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Chem 509 Signal Transduction Winter 2010 Lecture 1.

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Presentation on theme: "Chem 509 Signal Transduction Winter 2010 Lecture 1."— Presentation transcript:

1 Chem 509 Signal Transduction Winter 2010 Lecture 1

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4 6 general classes of receptors

5 Ligand, agonist, antagonist

6 Autocrine, paracrine, endocrine: three mechanisms of signaling cells

7 Fight or Flight Response http://monmouthfamilywellness.com/yahoo_site_admin/assets/images/fight-or-flight.107165735_std.jpg

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14 Cholera Vibrio cholerae http://geo.arc.nasa.gov/sge/health/sensor/diseases/cholera.html http://blackminis.wordpress.com/2008/ 12/12/winter-brings-infection/

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17 AKAP: A kinase anchoring protein Protein Kinase A

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21 Termination of beta adrenergic signaling pathway: 1.Epinepherine concentration is lowered. 2.GAP activity of Gs alpha (GTP converted to GDP) 3.cAMP phosphodiesterase 4.Phosphorylation of beta-adrenergic receptor - kinase is beta-adrenergic receptor kinase(BARK) -also known as G protein-coupled receptor kinase 2 5.Association of phosphorylated beta-adrenergic receptor with arrestin. This is followed by receptor endocytosis.

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