'Sigma factor' presentation slideshows

Transcription

Transcription. Chapter 8. The Problem. Information must be transcribed from DNA in order function further. REMEMBER: DNA ?RNA?Protein. Tanscription in Prokaryotes. Polymerization catalyzed by RNA polymerase Can initiate synthesis Uses rNTPs Requires a template

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Chapter 9

Chapter 9. Transcription.

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Bacterial Transcription

Bacterial Transcription. Dr Mike Dyall-Smith, lab 3.07 Aim: Understand the general process of bacterial transcription References: Schaecter et al , Microbes, p141-8. Bacterial Transcription. Main topics : a) Overall scheme of information processing in cell

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Chapter 11

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Principle :

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Prokaryotic Transcription

Prokaryotic Transcription. Nilansu Das Dept. of Microbiology Surendranath College. Paper III Group A: Cellular and Molecular Biology Unit I 1. DNA Replication: (10) DNA-Replication-Meselson-Stahl experiment as evidence for semiconservative

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Transcription

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DNA Supercoiling

Peter John M.Phil, PhD Atta-ur-Rahman School of Applied Biosciences (ASAB) National University of Sciences & Technology (NUST). DNA Supercoiling. Efficiency of some promoters is influenced by the degree of Supercoiling Twin Model of Transcription Transcription complex rotate around the DNA

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Central Dogma & PCR

Central Dogma & PCR. B91901070 Wang Yu-Hsin. Central Dogma. What is Central Dogma? DNA RNA Protein transcription translation All cells express their genetic information in this way. Cells must control the amount of protein according to their demand.

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G e n e t i c s N e w s

G e n e t i c s N e w s. Fly lab preliminary report due next week. Lab next week in Jepson?. James Sikorski (Searle Pharmaceuticals) Speaks on the process of drug discovery Friday, 10 November, 1:30 PM W-201 Informal discussion with students afterwards. Topics.

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E. coli RNA Polymerase

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ECOLI RNA POLYMERASE

BIOCHEMISTRY

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Sigma factors in sporulation

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Centrifugation

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10 ?? ????

10 ?? ????. Chapter 16. Regulation of Transcription in Prokaryotes. Regulation of gene expression. Transcription Access to coding DNA Recognition of promoter by RNA polymerase (alternative sigma factor for different genes) Initiation of RNA synthesis Elongation rate

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Centrifugation

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Transcription Transcription- synthesis of RNA from only one strand of a double stranded DNA helix

Transcription Transcription- synthesis of RNA from only one strand of a double stranded DNA helix DNA ???? RNA( ???? Protein) Why is RNA an intermediate???? Protect the DNA; limited access; Gives regulatory opportunity (all cells have the same DNA but not the same genes are expressed)

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Jon Marles-Wright , Richard J Lewis

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