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Analysis of Enzymopathies in the Human Red Blood Cells by Constraint-based Stoichiometric Modeling Approaches by Saliha Durmuş Tekir; Tunahan Çakır; Kutlu Ö. Ülgen is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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The human red blood cell (RBC) metabolism is investigated by calculating steady state fluxes using constraint-based stoichiometric modeling approaches. For the normal RBC metabolism, flux balance analysis (FBA) is performed via optimization of various alternative objective functions, and the maximization of production of ATP and NADPH is found to be the primary objective of the RBC metabolism. FBA and two novel approaches, minimization of metabolic adjustment (MOMA) and regulatory on-off minimization (ROOM), which can describe the behavior of the metabolic networks in case of enzymopathies, are applied to observe the relative changes in the flux distribution of the deficient network. The deficiencies in several enzymes in RBC metabolism are investigated and the flux distributions are compared with the non-deficient FBA distribution to elucidate the metabolic changes in response to enzymopathies. It is found that the metabolism is mostly affected by the glucose-6-phosphate dehydrogenase (G6PDH) and phosphoglycerate kinase (PGK) enzymopathies, whereas the effects of the deficiency in DPGM on the metabolism are negligible. These stoichiometric modeling results are found to be in accor

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Author

Saliha Durmuş Tekir; Tunahan Çakır; Kutlu Ö. Ülgen

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 1476-9271)

Published

2006

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)