Allan Maxam

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Allan Maxam
BornOctober 28, 1942 (1942-10-28) (age 76)
Known for Maxam–Gilbert sequencing
Scientific career
Doctoral advisor Walter Gilbert

Allan Maxam (born October 28, 1942) is one of the pioneers of molecular genetics. He was one of the contributors to develop a DNA sequencing method at Harvard University, while working as a student in the laboratory of Walter Gilbert. [1] [2]

Molecular genetics is the field of biology that studies the structure and function of genes at a molecular level and thus employs methods of both molecular biology and genetics. The study of chromosomes and gene expression of an organism can give insight into heredity, genetic variation, and mutations. This is useful in the study of developmental biology and in understanding and treating genetic diseases.

DNA sequencing process of determining the nucleic acid sequence – the order of nucleotides in DNA

DNA sequencing is the process of determining the nucleic acid sequence – the order of nucleotides in DNA. It includes any method or technology that is used to determine the order of the four bases: adenine, guanine, cytosine, and thymine. The advent of rapid DNA sequencing methods has greatly accelerated biological and medical research and discovery.

Harvard University Private research university in Cambridge, Massachusetts, United States

Harvard University is a private Ivy League research university in Cambridge, Massachusetts, with about 6,700 undergraduate students and about 15,250 postgraduate students. Established in 1636 and named for its first benefactor, clergyman John Harvard, Harvard is the United States' oldest institution of higher learning. Its history, influence, and wealth have made it one of the most prestigious universities in the world.

Walter Gilbert and Allan Maxam developed a DNA sequencing method - now called Maxam-Gilbert sequencing - which combined chemicals that cut DNA only at specific bases with radioactive labeling and polyacrylamide gel electrophoresis to determine the sequence of long DNA segments. [3]

Polyacrylamide gel electrophoresis

Polyacrylamide gel electrophoresis (PAGE) is a technique widely used in biochemistry, forensic chemistry, genetics, molecular biology and biotechnology to separate biological macromolecules, usually proteins or nucleic acids, according to their electrophoretic mobility. Electrophoretic mobility is a function of the length, conformation and charge of the molecule. Polyacrylamide gel electrophoresis is a powerful tool used to analyze RNA samples. When polyacrylamide gel is denatured after electrophoresis, it provides information on the sample composition of the RNA species.

Allan Maxam and Walter Gilbert’s 1977 paper “A new method for sequencing DNA” was honored by a Citation for Chemical Breakthrough Award from the Division of History of Chemistry of the American Chemical Society for 2017. It was presented to the Department of Molecular & Cellular Biology, Harvard University. [4] [1]

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Maxam–Gilbert sequencing

Maxam–Gilbert sequencing is a method of DNA sequencing developed by Allan Maxam and Walter Gilbert in 1976–1977. This method is based on nucleobase-specific partial chemical modification of DNA and subsequent cleavage of the DNA backbone at sites adjacent to the modified nucleotides.

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References

  1. 1 2 Maxam, A M; Gilbert, W (1977), "A new method for sequencing DNA.", Proc. Natl. Acad. Sci. U.S.A. (published Feb 1977), 74 (2), pp. 560–4, doi:10.1073/pnas.74.2.560, PMC   392330 , PMID   265521
  2. DNA SEQUENCING AND GENE STRUCTURE, Walter Gilbert Nobel lecture, 8 December, 1980
  3. Maxam AM, Gilbert W, Sequencing end-labeled DNA with base-specific chemical cleavages, Methods Enzymol. 1980;65(1):499-560
  4. "Citations for Chemical Breakthrough Awards 2017 Awardees". Division of the History of Chemistry. Retrieved 12 March 2018.

See also