Stephanopoulos:Literature Reviewed

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Literature Reviewed

The purpose of this page is to post the recent articles that we in the Stephanopoulos group review in our nearly-weekly literature review presentations. Sometimes the presenter focuses on a particular paper, and sometimes the roughly one-hour talk gives a brief overview of an important series of related papers.


27 April 2006: Curt Fischer

Curt presented a recent PNAS article [1] which explicated a newly-discovered operon in E. coli. This operon encodes a previously unreported pathway for uracil degradation, which ends in the excretion of 3-hydroxypropionic acid in the medium. He also briefly mentioned two other recent high-profile papers on nitrogen metabolism--one reported the genome sequence of a anaerobic ammonium oxidizing bacterium and hypthesized the full structure of this metabolic pathway [2], and the other presents laborious and careful analysis carbon utilization of non-thermophilic archaea living in medium-depth oceanic waters[3]. These bacteria fix inorganic carbon and oxidize nitrogen, and are probably major players in the global nitrogen cycle.

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  1. Error fetching PMID 16540542: [Curt1]
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All Medline abstracts: PubMed HubMed

4 May 2006: Joel Forrest Moxley

Joel gave an excellent overview of several landmark papers about new tools for high-throughput data collection in systems biology. The papers were made possible by advances in tiling DNA microarrays, protein arrays, and automated yeast transformation and colony characterization.

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All Medline abstracts: PubMed HubMed

18 May 2006: José O. Alemán

José gave a brief overview of two papers looking at insulin resistance from a perspective of cellular and animal experiments. The first uses cellular and animal experiments addressing reactive oxygen species' role in insulin resistance, while the second carefully dissects insulin signaling in the liver to tease divergent metabolic control of glucose and lipid metabolism.

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All Medline abstracts: PubMed HubMed

14 Sep 2006: José O. Alemán

José presented a paper using deuterium and carbon labeling to elucidate the function of a redundant metabolic module for formaldehyde metabolism in Methylobacterium extorquens AM1.

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21 Sep 2006: Jamey D. Young

Jamey presented a paper from the Nicholson group describing the effects of gut microbes on choline metabolism in the development of fatty liver disease.

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12 Oct 2006: Curt Fischer

Curt presented a very recent paper from Nature Chemical Biology about isotopically instationary analysis of nitrogen assimilation in E. coli. Two notable things about this paper were 1) the invention of a technique for rapid metabolome quenching of E. coli while still obtaining some degree of intracellular/extracellular separation, and 2) the agreement of the measured net fluxes with net fluxes predicted by FBA.

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  1. Error fetching PMID 16936719: [Curt4]

26 Oct 2006: Christine Santos

Christine presented two papers on cannibalism in Bacillus subtilis. In an effort to delay sporulation under conditions of extreme nutrient deprivation, B. subtilis cells with an activated sporulation regulatory protein, Spo0A, make use of two modes of killing to bring about the cell lysis of genetically identical sister cells and the subsequent release of nutrients.

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All Medline abstracts: PubMed HubMed

30 Nov 2006: José O. Alemán

José presented a paper documenting the effects of resveratrol, one of the active compounds in red wine and an effector of caloric restriction, in preventing disease progression associated with a high-calorie diet in mice.

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8 March 2007: Benjamin L. Wang

Ben presented a paper describing the use of a microfluidic device to measure transcription factor binding.

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3 May 2007: Jamey D. Young

Jamey presented a paper on reducing photorespiration and improving growth in C3 plants. This was accomplished by introducing the glycolate catabolic pathway from E. coli into A. thaliana.

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13 December 2007: Benjamin L. Wang

Ben presented a paper describing a model relating mRNA, protein, enzymatic activity, and flux levels. The model system used was the glycolytic pathway in Saccharomyces cerevisiae.

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7 February 2008: Curt R. Fischer

Curt discussed the two high-profile papers from the J. Craig Venter Institute on genome transplantation and genome synthesis. The lab debated if the popular press's treatment of the two articles was consistent with their actual scientific impact.

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  1. Error fetching PMID 18218864: [Curt4]
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All Medline abstracts: PubMed HubMed

20 March 2008: Mitchell Tai

Mitchell presented a paper on a method for genome-scale analysis and tracking of library population under selective pressure. The technique, named SCALEs, utilizes microarrays to determine distribution of gene fragements in plasmids in a population. It is useful for determining genes which have beneficial (or deleterious) effects on cell fitness.

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All Medline abstracts: PubMed HubMed

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