Chapter 7 Notes

Chapter 7 Notes - I ngrid Shih BIO 1305-08 22 September...

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BIO 1305-08 22 September 2010 Cell Signaling and Communication Types of Signals: Light Chemical Signals e.g. hormones Temperature Sound Cell Signals: Autocrine- binds to the same cell Paracrine- binds to neighboring cells Hormones- usually travels via blood stream Autocrine/Paracrine are mostly found in eukaryotic cells Signal Transduction Pathway Series of bits that ultimately results in some change of the cell Enzyme Receptor protein Protein kinase activity Responder protein Signal is amplified by adding more phosphate groups Protein binds to DNA- by binding to the DNA, it will change transcription in some way Expression of a gene is turned on/off Altered cell activity Specificity of binding Usually in a membrane, very specific binding sites to certain signals But that doesn’t mean there are no interference- inihibitors- other structures that will bind to the protein that will block the regular signals from binding to the protein. Different types of Receptors
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This note was uploaded on 03/23/2011 for the course BIO 1305 taught by Professor Eldridge during the Fall '08 term at Baylor.

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Chapter 7 Notes - I ngrid Shih BIO 1305-08 22 September...

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