. 2012 Sep 14;160(3):1218–1236. doi: 10.1104/pp.112.203927

Table I. Predicted substrate cost for the synthesis of biomass and different biomass components, as derived from flux-bound sensitivities to changes in biomass compounds (Supplemental Table S8).

Substrate uptakes other than for the substrates shown were not sensitive. Uptake reactions are shown in parentheses. Under substrate cost, blank entries mean zero value.

Biomass Component/Biomass	Shadow Price^a	Substrate Cost
Biomass Component/Biomass	Shadow Price^a	Gln (115)	Suc (121)	SO₄²⁻ (239)	PO₄³⁻ (240)
		mmol substrate g⁻¹ biomass component *(mmol substrate mmol⁻¹ biomass component)*
Cell wall (CW_ap)			−3.16
Cell wall (CW_ap)	*−0.513*		*−0.513*
DNA		−5.96	−0.52		−3.24
DNA	*−3.000*	*−1.840*	*−0.160*		*−1.00*
Free l-Gln (Gln_c)		−6.84	−0.09
Free l-Gln (Gln_c)	*−1.013*	*−1.00*	*−0.013*
Protein (Prot_c)		−6.44	−1.90	−0.31
Protein (Prot_c)	*−0.954*	*−0.710*	*−0.210*	*−0.034*
RNA		−6.07	−0.18		−3.13
RNA	*−2.997*	*−1.940*	*−0.056*		*−1.00*
Starch (starch_p)			−3.24
Starch (starch_p)	*−0.525*		*−0.525*
Free Suc (Sucr_c)			−2.96
Free Suc (Sucr_c)	*−1.013*		*−1.013*
TAG			−8.00
TAG	*−7.479*		*−7.479*
Biomass		−1.632	−4.447	−0.043	−0.006

Change in value of the objective function relative to change in biomass component (mmol substrate uptake g⁻¹ biomass component).