Polyketide Biosynthesis: The Erythromycin Example - Part 1: Overview of Polyketides and Polyketide Biosynthesis (34:10)

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In the first part, an overview of polyketides and polyketide biosynthesis is presented. A rationale for investigating polyketide biosynthesis is also presented.

For further informaton see: http://www.ascb.org/ibioseminars/Khosla/Khosla1.cfm

Rudolph Jaenisch Interview

submitted by: rsever

Stem cell expert Rudolph Jaenisch is interviewed by Richard Sever of Cold Spring Harbor Laboratory following his keynote lecture at the 2008 Cold Spring Harbor Symposium on Quantitative Biology

Design and Testing of Protein Combinatorial Libraries - Part 1: Introduction to Protein Design by Computation (31:09)

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In this lecture, I discuss the challenges of designing new proteins that fold into a particular structure or perform a particular function. One method is to computationally design a protein based solely upon our knowledge of amino acids and protein folding, a hard task but one which has had recent successes. Another approach is to screen combinatorial libraries of proteins for a desired function. In particular, I will discuss how structure-based computational methods can allow for high...

The Origin of Vertebrates - Part 1: The Origin of the Vertebrate Nervous System: The Hemichordat

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Modern cell and developmental biology has a lot to contribute to our understanding of the deep history of animal origins, which until recently has been largely the province of paleontology. In this set of lectures, I hope to show how recent studies by a very small group of scientists on a virtually unknown phylum of marine organisms, the hemichordates, has helped explain some of the major mysteries of the origin of vertebrates. This is a tour of not only vertebrate origins but the...

What Genomes Can Tell Us About the Past by Sydney Brenner - Part 1: (39:06)

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By looking at the light from distant galaxies and having well-established calibration methods, astrophysics can make hypotheses about the history of our universe. Do we have similar "rulers" in biology that could allow us to reconstruct the remote past and the evolution of species on this planet? The answer is likely "yes" and the clues are undoubtedly contained in the many whole genome sequences that are now available for inspection. However, it is critical to evaluate the assumptions that...

Role of the Neural Crest in Vertebrate Development and Evolution by Nicole Le Douarin, March 2008 - Part 1: The Quail Chick Marker System and Its Use to Study the Ontogeny of the Neural Crest (24:45)

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The neural crest (NC) is a transitory structure of the Vertebrate embryo. It forms when the neural tube closes through the epithelio- mesenchymal transition of the cells in the joining neural folds. Its constitutive cells are endowed of migratory capacities and are highly pluripotent. NC cells migrate in the developing embryo along definite pathways, at precise periods of time during embryogenesis and settle in elected sites in the body where they develop into a large of cell types. The...