Related Experiment Video

Updated: Aug 13, 2026

Identifying DNA Mutations in Purified Hematopoietic Stem/Progenitor Cells
11:06

Identifying DNA Mutations in Purified Hematopoietic Stem/Progenitor Cells

Published on: February 24, 2014

Natulan, a bacterial mutagen requiring complex mammalian metabolic activation

A K Solt, S Neale

    Mutation Research
    |April 1, 1980
    PubMed

    More Related Videos

    Formation of Covalent DNA Adducts by Enzymatically Activated Carcinogens and Drugs In Vitro and Their Determination by 32P-postlabeling09:33

    Formation of Covalent DNA Adducts by Enzymatically Activated Carcinogens and Drugs In Vitro and Their Determination by 32P-postlabeling

    Published on: March 20, 2018

    The Lambda Select cII Mutation Detection System07:08

    The Lambda Select cII Mutation Detection System

    Published on: April 26, 2018

    Related Concept Videos

    Mismatch Repair01:36

    Mismatch Repair

    Overview
    Nucleotide Excision Repair01:08

    Nucleotide Excision Repair

    Overview
    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...
    Mutagenicity and Carcinogenicity01:25

    Mutagenicity and Carcinogenicity

    Mutagenicity and carcinogenicity refer to the ability of drugs to cause genetic defects and induce cancer, respectively. The International Agency for Research on Cancer (IARC) classifies agents into four groups based on their carcinogenic potential. Group 1 agents are known human carcinogens; group 2A agents are probably carcinogenic to humans; group 3 agents lack data to support their role in carcinogenesis; and group 4 includes agents for which data support that they are not likely to be...
    Spontaneous and Induced Mutations01:30

    Spontaneous and Induced Mutations

    Spontaneous mutations arise infrequently during DNA replication due to errors in the process. A key factor behind these errors is tautomeric shifts in nitrogenous bases, where bases transition from keto to enol forms or amino to imino forms. This shift can alter base-pairing rules, leading to mutations. Additionally, reactive oxygen species (ROS) arising from aerobic metabolism can damage DNA, resulting in depurination (loss of a purine base) or depyrimidination (loss of a pyrimidine base).