This is a model of neuronal Nitric Oxide Synthase expressed in Escherichia coli based onSantolini J. et al. J Biol Chem. (2001) 276(2):1233-43 . Differing from the article, oxygen explicitly included in the reaction 2, 5 and 10 (numbers as in scheme 1 in the article). In the article the assumed oxygen concentration of 140 uM was included in the pseudo first order rate constant. Fig 2E in the article shows different time courses for citrulline and NO than the ones produced by this model. Dr. Santolini, one of the authors of the article, wrote that the legends in fig. 2E might be mixed up and should rather denote NO and NO3 instead of citrulline and NO. This model originates from BioModels Database: A Database of Annotated Published Models. It is copyright (c) 2005-2009 The BioModels Team. For more information see the terms of use . To cite BioModels Database, please use Le Novère N., Bornstein B., Broicher A., Courtot M., Donizelli M., Dharuri H., Li L., Sauro H., Schilstra M., Shapiro B., Snoep J.L., Hucka M. (2006) BioModels Database: A Free, Centralized Database of Curated, Published, Quantitative Kinetic Models of Biochemical and Cellular Systems Nucleic Acids Res., 34: D689-D691.