'Rna pol' diaporamas de présentation

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Lecture 3 RNA Biosynthesis (Transcription)

Lecture 3 RNA Biosynthesis (Transcription). RNA. Transcription. The synthesis of RNA molecules using DNA strands as the templates so that the genetic information can be transferred from DNA to RNA. Transcription. DNA. Similarity between replication and transcription.

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LECTURE 14 RNA: TRANSCRIPTION & PROCESSING

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Introduction to Transcriptional Machinery

Introduction to Transcriptional Machinery. "DNA makes RNA, RNA makes protein, and proteins make us." Francis Crick. Central Dogma of Molecular Biology. RNA Polymerase of E. Coli. Transcribes all mRNA, rRNAs and tRNAs 7,000 molecules per cell

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Molecular Biology in Medicine ???????

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Chapter Eleven Transcription of the Genetic Code: The Biosynthesis of RNA

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???? RNA ?????????. 1/50. ????? The central dogma ? :. ??. ??. ??. RNA. DNA. ???. ???. ??. ??? ????. ??. RNA ????. 2/50. DNA ????????. ? ? ? ? ? ?. ? DNA ??? ?? ???? ?? ?? ?? DNA ???? ???????? ?????

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Plasmids and Bacteriophages

Plasmids and Bacteriophages. Plasmids : autonomously replicating extrachromosomal DNA molecules present mostly in the bacterial cells. Bacteriophages (phages) : bacterial viruses. Plasmids. General properties of plasmids: dsDNA, mostly circular Size: 3 kb-150 kb

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???? ???????????. ??? ??????? ? . ?????? 1. ????????? . ??? ? operon) ?????? ? cis-acting element ? ???? ? structural genes ? ???? ? regulator genes ?? ?????? ? trans-acting factor ?? ??? ? inducer ?? ??? ? effectors ? ??? ???? ????? ???? ? controlling site ? ?? ? induction ?.

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Flow of genetic information

Flow of genetic information. DNA. RNA. Proteins. Cellular Action. replication. transcription. translation. DNA. RNA Types. mRNA = Messenger RNA; an RNA copy of the DNA sequence (gene) used as a template for protein synthesis

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Transcription: RNA Synthesis, Processing & Modification

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Chapter 8: Microbial Genetics

Chapter 8: Microbial Genetics. Genome : genetic information in a cell Chromosome : contains the genes-segments of DNA DNA : nucleotide base pairs - genetic code for proteins Central Dogma : DNA - RNA - Proteins Genomics : sequencing and molecular characterization of genomes. Bacteria

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Announcements

Announcements. 1. Today – in class problem solving: including handout/worksheet on recombinant DNA technology, putting it all together AND restriction analysis problems

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Prokaryotic Transcription: Initiation, Elongation & Termination

MOLECULAR BIOLOGY Ch 6. Prokaryotic Transcription: Initiation, Elongation & Termination. SDS PAGE. RNA Polymerase Holoenzyme. holoenzyme. sigma. core. -. ? '. ?. ?. +. Viral Transcription: immediate early genes, delayed early genes, late genes Sigma Factor :

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Bio 178 Lecture 30

Bio 178 Lecture 30. Gene Expression. http://ccgb.umn.edu/~mwd/cell_www/chapter2/ribosome.html. Reading. Chapters 15 & 20 (P 410-411). ?. Quiz Material. Questions on P 318 & 432 Chapters 15 & 20 Quizzes on Text Website (www.mhhe.com/raven7). Gene Expression

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Do Now:

Do Now:.

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CHMI 2227E Biochemistry I

CHMI 2227E Biochemistry I. Gene expression. Nature of the gene. Genes are discrete regions of a DNA molecule Genes are permanent fixtures of your DNA; Every single cell in your body (every 100 trillion [i.e. 10 -15 cells] of them) has the exact, same DNA, the exact, same set of genes.

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