BIO312H5 Lecture Notes - Lecture 7: Meristem, Axillary Bud, Brassinosteroid

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27 Nov 2016

Document Summary

Model for signal transduction in plants: changes in lipid composition, phosphatases are involved; ph changes the performance. Temperature and light also act as signals causing release/synthesis of certain hormones. Transcription factors are released that act as active signalling pathway; protein. Constans effects the development of new buds and flowers. Two compound signal transduction serves as a basic stimulus-response coupling mechanism: most basic signal transduction pathway, eukaryotes 2-component system: Some substance (chemical) enters in input domain and gets phosphorylated in. Transmitter domain of senior protein transfer of phosphate group to the receiver domain of response regulator protein and response occurs in output domain. In multistep version of prokaryotic two-component system, the phosphate group gets transferred to carrier proteins before it reaches receiver domain. Plants & animals share signal transduction proteins - but there is also a distinct repertoire of signaling proteins (diagram is important in illustration of general pathway of regulator proteins)