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Reporter Genes

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Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.
Commonly used reporter...

Proofreading

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Synthesis of new DNA molecules is carried out by the enzyme DNA polymerase, which adds nucleotides on the daughter strand complementary to the template DNA strand. DNA polymerase has a higher affinity to add the correct base and ensures fidelity during DNA replication. Furthermore, it exhibits proofreading activity during replication, using an exonuclease domain that cuts off incorrect nucleotides from the nascent DNA strand.
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Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell!

Altruism

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Related Experiment Video

Updated: May 29, 2026

Restraint to Induce Stress in Mice and Rats

Restraint to Induce Stress in Mice and Rats

Published on: December 6, 2024

To the Editor:

Alaa Shalaby¹, Charles W Atwood

¹E-mail: alaa.shalaby@med.va.gov, charles.atwood@med.va.gov.

Pacing and Clinical Electrophysiology : PACE

|September 3, 2011

Summary

No abstract available in PubMed .

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