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ID 16718

Video 34: Douglas Hanahan, clip 4

Doug Hanahan is a professor of biochemistry at UCSF. He refined transformation techniques, and developed the current theories on the mechanisms of DNA uptake.
definitions, mechanisms, biochemistry, transformation techniques, douglas hanahan, dna uptake
Creative Commons License This work by Cold Spring Harbor Laboratory is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.

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16715. Video 34: Douglas Hanahan, clip 1
Improving on the Mandel and Higa method of DNA transformation.
16719. Video 34: Douglas Hanahan, clip 5
Size of DNA and transformation efficiencies.
16716. Video 34: Douglas Hanahan, clip 2
The problem of getting DNA into a bacteria.
16717. Video 34: Douglas Hanahan, clip 3
How big are those bacterial pores?
16722. Biography 34: Doug Hanahan (1951 - )
Doug Hanahan refined transformation methods for DNA uptake into bacteria.
15916. DNA transformation
Stanley Cohen and Herbert Boyer inserted the recombinant DNA molecule they created into E. coli bacteria by means of a plasmid, thereby inducing the uptake and expression of a foreign DNA sequence known as "transformation."
16705. Animation 34: Genes can be moved between species.
Stanley Cohen and Herbert Boyer transform bacteria with a recombinant plasmid, and Doug Hanahan studies induced transformation.
938. Hallmarks, Overview: Hanahan
Professor Douglas Hanahan discusses how cancer acquires capabilities and these capabilities are all, to some approximation, necessary to produce a successful tumor.
942. Hallmarks, Evading death: Hanahan
Professor Douglas Hanahan explains that a fundamental property of multi-cellular organisms is the capability to have cells commit suicide or undergo apoptosis, which is a form of programmed cell death.
946. Hallmarks, Becoming immortal: Hanahan
Professor Douglas Hanahan, discusses that due to the nature of the replication machinery chromosomes get smaller every time they divide, and that we now appreciate that specialized cells in the body have a way to counteract this telomere shorting.
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