Related Experiment Video

Updated: Jul 29, 2026

Inducing a Site Specific Replication Blockage in E. coli Using a Fluorescent Repressor Operator System
11:19

Inducing a Site Specific Replication Blockage in E. coli Using a Fluorescent Repressor Operator System

Published on: August 21, 2016

DNA receptor sites for the intercalation of nogalamycin

S Marciani, M Terbojevich, D Vedaldi

    Il Farmaco; Edizione Scientifica
    |April 1, 1977
    PubMed

    More Related Videos

    Atomic Force Microscopy Investigations of DNA Lesion Recognition in Nucleotide Excision Repair10:59

    Atomic Force Microscopy Investigations of DNA Lesion Recognition in Nucleotide Excision Repair

    Published on: May 24, 2017

    Visualization of Replisome Encounters with an Antigen Tagged Blocking Lesion08:24

    Visualization of Replisome Encounters with an Antigen Tagged Blocking Lesion

    Published on: July 27, 2021

    Related Concept Videos

    Nucleotide Excision Repair01:08

    Nucleotide Excision Repair

    Overview
    Homologous Recombination02:31

    Homologous Recombination

    The basic reaction of homologous recombination (HR) involves two chromatids that contain DNA sequences sharing a significant stretch of identity. One of these sequences uses a strand from another as a template to synthesize DNA in an enzyme-catalyzed reaction. The final product is a novel amalgamation of the two substrates. To ensure an accurate recombination of sequences, HR is restricted to the S and G2 phases of the cell cycle. At these stages, the DNA has been replicated already and the...
    Conservative Site-specific Recombination and Phase Variation02:53

    Conservative Site-specific Recombination and Phase Variation

    Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
    The recognition sites for Cre recombinase called LoxP...
    Nucleotide Excision Repair01:38

    Nucleotide Excision Repair

    DNA Distortion and Damage
    Cells are regularly exposed to mutagens—factors in the environment that can damage DNA and generate mutations. UV radiation is one of the most common mutagens and is estimated to introduce a significant number of changes in DNA. These include bends or kinks in the structure, which can block DNA replication or transcription. If these errors are not fixed, the damage can cause mutations, which in turn can result in cancer or disease depending on which sequences are...
    Mismatch Repair01:20

    Mismatch Repair

    Organisms are capable of detecting and fixing nucleotide mismatches that occur during DNA replication. This sophisticated process requires identifying the new strand and replacing the erroneous bases with correct nucleotides. Mismatch repair is coordinated by many proteins in both prokaryotes and eukaryotes.
    The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
    The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
    Inhibitors of Bacterial DNA Synthesis01:28

    Inhibitors of Bacterial DNA Synthesis

    Bacterial pathogens depend on precise and efficient DNA replication to sustain infection. Two type II topoisomerases—DNA gyrase and topoisomerase IV—are critical to this process, as they resolve DNA supercoiling and unlink chromosomes during replication. Fluoroquinolones, synthetic derivatives of quinolones, exploit this mechanism by stabilizing the transient DNA–enzyme cleavage complex, preventing strand religation, and causing lethal double-strand breaks. These antibiotics are selectively...