DNA Replication, Repair & Recombination

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Presentation transcript:

DNA Replication, Repair & Recombination

Semi-Conservative Replication Continuous Replication on Leading Strand Discontinuous Replication on Lagging Strand (Okazaki Fragments)

Leading and Lagging Strand DNA Replication Leading Strand Lagging Strand

DNA Replication

DNA Replication

DNA Replication

DNA Polymerase I

DNA Polymerase I Structure

DNA Replication Proteins

Replication Fork

Beta Clamp DNA Top View Side View

Chemical Mechanism of Chain Elongation

Leading / Lagging Strand Replication

DNA Topoisomers

Topoisomerase Action

Topoisomers/Topoisomerases L = T+W L = Linking Number T = Twists W = Writhes

Polymerase Chain Reaction

Polymerase Chain Reaction

Polymerase Chain Reaction

Polymerase Chain Reaction

Polymerase Chain Reaction

DNA Proof-reading

Prokaryotic vs Eukaryotic DNA Replication Introduction

Chromosomes With Telomeres

Linear DNA Replication

Telomerase Action

Telomerase Action

Nucleotide Excision Repair Bulky DNA Adduct

Nucleotide Excision Repair

Nucleotide Excision Repair

Nucleotide Excision Repair Thymine Dimers

Nucleotide Excision Repair Partial Strand Removal Thymine Dimer Repair

Base Excision Repair Cytosine Deamination Cytosine Uracil

Flipping out of base from helix Base Excision Repair

Uracil-N-Glycosylase Catalysis Excision of Base Base Excision Repair Uracil-N-Glycosylase Catalysis

DNA Mismatch Repair Mismatch

DNA Mismatch Repair Unmethylated, recognizable Methylated, unrecognizable

Measuring Mutation Ames Test

DNA Recombination

DNA Recombination Strand Invasion

Structure Introduction

DNA Recombination Holliday Junction

Recombination/Repair

RecA Recombination Repair in E. coli

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