BIO230H1 Lecture Notes - Lecture 23: Receptor Tyrosine Kinase, Guard Cell, Osmosis
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BIO230H1 Full Course Notes
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Document Summary
Cleaves membrane lipid ip3 (soluble molec) contact with er membrane where there is receptor for ip3. Produced as a result of the binding of a first messenger (i. e. hormone) Proteins whose fxn is effected by ca (don"t need to memorize) In response to fertilization a wave of ca goes through cell. Ca doesn"t come from outside--it is released from the internal storage of ca. Close guard cell to preserve water when it is low in the env"ment. Aba induces ion channel to move ca in. Has two effects from cytoplasm by osmosis ca and h2o are leaving the cell. Once receptor activated has phosphate grp attached to it allows other signalling molecs to bind to receptor. 1st phosphorylate each other (finds other molec like itself) Protein serves to adapt to activated receptors. Activated insulin receptor attracts irs which calls on others. Tf gets phosphorylated when stat gets p protein dimerizes to go to nucleus (where it binds to regulate genes)
