PPT-Chapter 18 – Regulation of Gene Expression

Regulating PROKARYOTIC Gene Expression Both prokaryotes and eukaryotes alter their patterns of gene expression in response to changes in environmental conditions During development gene expression must be carefully regulated to ensure that the right genes are expressed only at the correct time and in the correct place. Inducible gene expression. kinetics of . β-galactosidase. enzyme induction. Add inducer. start transcription = mRNA accumulation. mRNA translation = protein accumulation. Remove inducer. Stop. transcription (. of gene expression. . References:. . Stryer. : “Biochemistry”, 5. th. Ed.. Hames. & Hooper: “Instant Notes in Biochemistry”, 2. nd. Ed.. 1. Basic principles of gene control. What is gene expression?. What does the operon model attempt to explain?. the coordinated control of gene expression . in bacteria. bacterial resistance to antibiotics. how genes move between homologous regions of DNA. the mechanism of viral attachment to a host cell. Gene Expression Group. 7/14/11. 2011 National Academies Northstar Institute for Undergraduate Education in Biology . Outline. Context. Review: Clicker Questions. Cell Differences (Think-Pair-Share). Regulation of Gene Expression (Mini-Lecture). r. esponses in the Pacific oyster, . Crassostrea. . gigas. . Mackenzie Gavery . University of Washington. School of Aquatic and Fishery Sciences. Committee Meeting: April 15. th. , 2014. Agenda:. Research update. Outline. Objective. Mechanism. K. inase cascades and Phosphorylation/. dephosphorylation. . General. Learning/LTP. Synaptic strengthening. Control of gene expression. Transcription factors. Epigenetics. Anablep. . anablep. . with its “4 eyes”. Upper half of lids look aerially while the lower half looks into the water.. Cells of the two parts of the eye exhibit differential gene expression. Individual bacteria respond to environmental change by regulating their gene expression. CSCOPE. Unit: 08 Lesson: 01. There are hundreds of different types of cells in your body, and each type has a unique function. We’re going to compare some different types of cells to see how much they have in common. . © 2017 W. H. Freeman and Company. CHAPTER 28 . Regulation of Gene Expression. DNA elements that control transcription. Protein factors that control transcription. Lac. operon as a model for regulation. Draw 8 boxes on your paper. Gene regulation accounts for some of the phenotypic differences between organisms with similar genes.. 2005-2006. Gene regulation in bacteria. Control of gene expression enables individual bacteria to adjust their metabolism to environmental change. The cerebellum is the region of the brain that coordinates motor control, and many human neural disorders impact the cerebellum.. Several spontaneous mouse mutants with motor defects have been found, including:. (Chapter 9). Presented by Dr. Laurie M. Erickson. Chair of the Department of Health Sciences. Blitstein Institute of Hebrew Theological College. Chicago, IL, USA.. Gene Expression can be Regulated.. Gene expression: . . 1. The . trp. Operon. Contains 5 genes coding for proteins (enzymes) required for the synthesis of the amino acid tryptophan. Also contains a promoter and operator.. When tryptophan levels in the cell are low, the expression of the . AP Bio – Ch. 16-21. Unit 6 – Overview. Ch. 16 – The Molecular Basis of Inheritance (DNA). Ch. 17 – Gene Expression: From Gene to Protein. Ch. 18 – Regulation of Gene Expression. Ch. . 19 . – .