Table 4

Biomass formation equations

Biomass Formation Equation (moles/kg biomass)


Autotrophic

Mixotrophic

Heterotrophic


DNA

0.002

0.002

0.002


RNA

0.051

0.051

0.051


Protein

2.005

2.328

1.706


Carbohydrate

2.008

1.513

1.752


Lipid

0.203

0.298

0.307


Chlorophyll a

0.010

0.008

0.020


Chlorophyll b

0.016

0.014

0.009


ATP (polymerization)

9.350

13.320

8.890


ATP (maintenance)

29.890

29.890

29.890


Biomass formation equation given in moles per kg biomass. Protein, lipid, chlorophyll were measured independently for each growth regime. DNA and RNA content were assumed the same for all cases and carbohydrates was assumed to be the balance. Polymerization energy includes energy required for protein, RNA and DNA polymerization and maintenance is based on a fitted value for heterotrophic growth.

Boyle and Morgan BMC Systems Biology 2009 3:4   doi:10.1186/1752-0509-3-4

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