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Title: Mapping the landscape of metabolic goals of a cell

Journal Article · · Genome Biology (Online)

Here, genome-scale flux balance models of metabolism provide testable predictions of all metabolic rates in an organism, by assuming that the cell is optimizing a metabolic goal known as the objective function. We introduce an efficient inverse flux balance analysis (invFBA) approach, based on linear programming duality, to characterize the space of possible objective functions compatible with measured fluxes. After testing our algorithm on simulated E. coli data and time-dependent S. oneidensis fluxes inferred from gene expression, we apply our inverse approach to flux measurements in long-term evolved E. coli strains, revealing objective functions that provide insight into metabolic adaptation trajectories.

Research Organization:
Boston Univ., MA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0012627
OSTI ID:
1618921
Alternate ID(s):
OSTI ID: 1310268
Journal Information:
Genome Biology (Online), Journal Name: Genome Biology (Online) Vol. 17 Journal Issue: 1; ISSN 1474-760X
Publisher:
Springer Science + Business MediaCopyright Statement
Country of Publication:
United Kingdom
Language:
English
Citation Metrics:
Cited by: 23 works
Citation information provided by
Web of Science

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Figures / Tables (5)