'Positive gene regulation' presentation slideshows

Regulation of Gene Expression Dr. Ishtiaq Ahmad Khan

868 views • 48 slides

31 Gene regulation in bacteria

648 views • 26 slides

Operon Vocabulary

921 views • 26 slides

Transposon

471 views • 25 slides

Transposon

348 views • 25 slides

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

349 views • 20 slides

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. .

270 views • 15 slides

Bacterial Genetics

Bacterial Genetics. Ch. 18. Review of Structure. Binary Fission. Other Methods of Gene Transfer & Recombination in Bacteria. Other Methods of Gene Transfer & Recombination in Bacteria. Transduction. Conjugation. F factor Sex pili. Transposons /Transposable Elements. Operon.

360 views • 14 slides

This metabolic control occurs on two levels

Concept 18.4: Individual bacteria respond to environmental change by regulating their gene expression E. coli , a type of bacteria that lives in the human colon Can tune its metabolism to the changing environment and food sources. (a) Regulation of enzyme activity.

357 views • 14 slides