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Related Concept Videos

Maxam-Gilbert Sequencing01:05

Maxam-Gilbert Sequencing

In the same year as the discovery of the Sanger sequencing method, another group of scientists, Allan Maxam and Walter Gilbert, demonstrated their chemical-cleavage method for DNA sequencing. The Maxam-Gilbert method relies on using different chemicals that can cleave the DNA sequence at specific sites, the separation of resulting DNA fragments of variable size using electrophoresis, and deciphering the DNA sequence from the resulting gel bands.
Challenges of the Maxam-Gilbert Method
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Sanger Sequencing01:57

Sanger Sequencing

DNA sequencing is a fundamental technique that is routinely used in the biological sciences. This method can be applied to a range of questions at different scales - from the sequencing of a cloned DNA fragment or the study of a mutation in a gene up to whole-genome sequencing. However, despite the widespread use of sequencing today, it was not until 1977 that Fredrick Sanger and his collaborators developed the chain-termination method to decode DNA sequences. It relies on the separation of a...
DNA Isolation01:24

DNA Isolation

DNA isolation protocols can be fast and straightforward or complex and time-consuming depending on the type and quality of DNA required for further processing. For example, plasmid DNA extraction is a bit more complicated than genomic DNA extraction because of the need for an appropriate lysis method to separate plasmid DNA from gDNA during isolation. However, for specific applications, such as long-range DNA sequencing that require a good yield of high- quality DNA samples, we need to follow...
DNA Isolation01:34

DNA Isolation

DNA from cells is required for many biotechnology and research applications, such as molecular cloning. To remove and purify DNA from cells, researchers use various methods of DNA extraction. While the specifics of different protocols may vary, some general concepts underlie the process of DNA extraction.
Restriction Enzymes01:11

Restriction Enzymes

Restriction enzymes are bacterial enzymes used to cut DNA in a sequence-specific manner. To cleave DNA, they bind to specific palindromic sequences called restriction sites. Such palindromic DNA sequences or inverted repeats are commonly found in regions of functional significance, such as the origin of replication, gene operator sites, and regions containing transcription termination signals.
The host bacteria protect their own genomic DNA from these enzymes by methylating these sites. Some...
DNA Bacteriophages01:26

DNA Bacteriophages

Bacteriophages, or phages, are viruses that specifically infect bacteria, utilizing their genetic material to hijack host cellular machinery for replication. DNA bacteriophages employ single-stranded DNA (ssDNA) or double-stranded DNA (dsDNA) genomes. These phages exhibit diverse replication strategies and host interactions, influencing their ecological roles and applications in biotechnology and medicine.ssDNA BacteriophagesssDNA phages, with their small genomes, utilize unique strategies to...

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Related Experiment Video

Updated: Jun 3, 2026

Parallel High Throughput Single Molecule Kinetic Assay for Site-Specific DNA Cleavage
06:51

Parallel High Throughput Single Molecule Kinetic Assay for Site-Specific DNA Cleavage

Published on: May 6, 2020

Chemical cleavage (maxam and gilbert) method for DNA sequence determination.

W Gaastra1

  • 1Department of Microbiology, The Technical University of Denmark, Lyngby, Denmark.

Methods in Molecular Biology (Clifton, N.J.)
|March 5, 2011
PubMed
Summary

DNA sequencing methods differ from protein analysis. The Maxam and Gilbert method uses partial chemical degradation, while the Sanger method is widely adopted for determining DNA sequences.

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Last Updated: Jun 3, 2026

Parallel High Throughput Single Molecule Kinetic Assay for Site-Specific DNA Cleavage
06:51

Parallel High Throughput Single Molecule Kinetic Assay for Site-Specific DNA Cleavage

Published on: May 6, 2020

Single-Molecule Real-Time Visualization of DNA Unwinding by CMG Helicase
07:37

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DamID-seq: Genome-wide Mapping of Protein-DNA Interactions by High Throughput Sequencing of Adenine-methylated DNA Fragments
09:14

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Published on: January 27, 2016

Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • Protein and peptide sequencing involves sequential degradation and residue identification.
  • DNA sequence analysis relies on high-resolution electrophoresis of oligonucleotides.
  • Oligonucleotides vary in length by a single nucleotide and share a common end.

Purpose of the Study:

  • To describe methods for DNA sequence analysis.
  • To differentiate DNA sequencing from protein sequencing techniques.

Main Methods:

  • The Maxam and Gilbert method involves chemical modification and cleavage of end-labeled DNA fragments.
  • This method yields four sets of oligonucleotides of varying lengths.
  • The Sanger method, widely used, is also discussed.

Main Results:

  • The Maxam and Gilbert method is also known as the partial chemical degradation method.
  • The Sanger method is frequently employed for DNA sequencing.

Conclusions:

  • DNA sequencing employs distinct techniques compared to protein sequencing.
  • Both Maxam and Gilbert and Sanger methods are pivotal in DNA sequence determination.