Experiments with Tape RNA
Experiments with Tape RNA
|91. Purifying tRNA||234||03:23|
|92. Purifying tRNA (Part 2)||202||03:31|
|93. The first official use of Molecular Biology||237||04:05|
|94. Genetics of the rII and the gene protein problem||210||05:01|
|95. DNA and RNA synthesis||225||03:38|
|96. François Jacob and Jacques Monod||410||01:42|
|97. Volkin-Astrachan RNA and Phage||393||03:19|
|98. Experimenting in California||220||01:56|
|99. Experiments with Tape RNA||223||05:05|
|100. Using magnesium to compete with caesium: radioactive Coca-Cola||254||03:26|
This meeting took place. By the afternoon François had come to my house in Cambridge, and we had designed the nature of the experiment that was later to be produced; that is, we realise we have to show… have to show that this new RNA is on old ribosomes and we… I realised very immediately that this could only be done on bacteriophage where we have the switch from old to new synthesis. And how would we tell the difference between old and new? Well, we would do it by the tricks developed by Meselson and Stahl which had… they'd developed for DNA. Namely we would label these with heavy isotopes – that is with Carbon 13, Nitrogen 15 – and we would be able by density gradient centrifugation just to weigh them and discover whether they were old or new, and that's one thing to say all of that and another thing to do it. Of course, the people who had all the amino acids made with the heavy isotopes were in California – that was Matt Meselson. I had learnt that François was going to go to California that summer, had been invited there, and what had happened was that I had been invited to come to California – another reason, and so we fixed it that we would go and do this experiment in California in... in the following June; it's a couple of months, and I fixed it with Matt Meselson we'd be able to use his isotopes and his equipment.
South African Sydney Brenner was awarded the Nobel Prize in Physiology or Medicine in 2002. His joint discovery of messenger RNA, and, in more recent years, his development of gene cloning, sequencing and manipulation techniques along with his work for the Human Genome Project have led to his standing as a pioneer in the field of genetics and molecular biology.
Title: Experimenting in California
Listeners: Lewis Wolpert
Lewis Wolpert is Professor of Biology as Applied to Medicine in the Department of Anatomy and Developmental Biology of University College, London. His research interests are in the mechanisms involved in the development of the embryo. He was originally trained as a civil engineer in South Africa but changed to research in cell biology at King's College, London in 1955. He was made a Fellow of the Royal Society in 1980 and awarded the CBE in 1990. He was made a Fellow of the Royal Society of Literature in 1999. He has presented science on both radio and TV and for five years was Chairman of the Committee for the Public Understanding of Science.
Tags: Cambridge, California, François Jacob, Matthew Meselson, Franklin Stahl
Duration: 1 minute, 57 seconds
Date story recorded: April-May 1994
Date story went live: 24 January 2008