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Systems Approach to Refining Genome Annotation
Jennifer L. Reed, Trina R. Patel, Keri H. Chen, Andrew R. Joyce, Margaret K. Applebee, Christopher D. Herring, Olivia T. Bui, Eric M. Knight, Stephen S. Fong and Bernhard O. Palsson
Proceedings of the National Academy of Sciences of the United States of America
Vol. 103, No. 46 (Nov. 14, 2006), pp. 17480-17484
Published by: National Academy of Sciences
Stable URL: http://www.jstor.org/stable/30052457
Page Count: 5
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Genome-scale models of Escherichia coli K-12 MG1655 metabolism have been able to predict growth phenotypes in most, but not all, defined growth environments. Here we introduce the use of an optimization-based algorithm that predicts the missing reactions that are required to reconcile computation and experiment when they disagree. The computer-generated hypotheses for missing reactions were verified experimentally in five cases, leading to the functional assignment of eight ORFs (yjjLMN, yeaTU, dctA, idnT, and putP) with two new enzymatic activities and four transport functions. This study thus demonstrates the use of systems analysis to discover metabolic and transport functions and their genetic basis by a combination of experimental and computational approaches.
Proceedings of the National Academy of Sciences of the United States of America © 2006 National Academy of Sciences