'Repressor binds' presentation slideshows

Molecular Biology: Translation and Methods

781 views • 76 slides

Chapter 26 The Operon

644 views • 42 slides

The Lac Operon 1961 , Jacob and Monod E. coli and other bacteria

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404 views • 27 slides

Exodus 15:26

Exodus 15:26

344 views • 26 slides

Exodus 15:26

Exodus 15:26

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Regulation of Gene Expression in Prokaryotes

Regulation of Gene Expression in Prokaryotes. Dr. Jason R Mayberry Castle View High School. The Need for Regulation of Gene Expression. Gene Expression Regulation : factors that determine under what circumstances the information in genes are used to produce functional proteins.

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Operons

Operons. Big picture. Prokaryotic control of genome expression 2 levels of control Change in # of enzyme molecules produced Change in activity of enzymes present Ex: feedback inhibition Genes turned on/off based on metabolic needs: operons Operator + promoter + group of genes

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Regulation of genes

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Gene Regulation

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Molecular Genetics

Molecular Genetics. The Regulation of Gene Expression. The Operon Model. The Operon Model. An operon is a stretch of DNA that contains a set of one or more genes involved in a particular metabolic pathway. An operator is a DNA sequence located within the promoter sequences. .

276 views • 15 slides

In medium with glucose as the only sugar In medium with glucose and lactose

preQ: Under which conditions will E. coli cells express (transcribe and translate) lots of beta-galactosidase?. In medium with glucose as the only sugar In medium with glucose and lactose In medium with lactose as the only sugar In medium with galactose All of the above.

297 views • 11 slides

Molecular Genetics

Molecular Genetics. Transcription (Review). Translation (Review). The lac Operon Function. DNA (lacZ, lacY, lacA) ? mRNA ? protein (lactose digest enzymes). Environment: lactose absent. Regulatory gene synthesizes protein (lac repressor) Lac repressor binds to the operator

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REGULATION OF GENE EXPRESSION

REGULATION OF GENE EXPRESSION. Gene Interactions The simplest form of gene interaction: Dominant vs. recessive Incomplete Dominance Josef Kolreuter: white/red carnations yielded pink colors are not blended; F-2 generation had a reappearance

540 views • 4 slides