Thermotable at different T’s and pH’s) (pdf): Standard metabolic potentials
收藏DataCite Commons2025-12-31 更新2026-05-03 收录
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A Table of the standard metabolic potentials of over a thousand species and blends thereof, of biochemical importance, at two temperatures and 3 pHs.
The Table is supplement S3 (Table 2) of _Westerhoff et al (2026) FEBS J. Metabolic thermodynamics: pertinent reference state and energy potentials.
In that paper it is described how the metabolic potentials have been calculated from the standard chemical potentials of the corresponding chemical species.
These standard metabolic potentials are the standard free energies of formation of substances from biological precursors in the metabolic standard state, i.e., pH=7, pMg=3, 99.5 mole % H2O, and 1 mM each of total inorganic phosphate, sulfate, bicarbonate, and ammonium blends. These standard potentials should be much more meaningful for biochemical and biological applications than the standard chemical potentials. The latter are the free energies of formation from the reference state of physical chemistry, i.e., H2, O2, N2 gases at 1 bar, and graphite, phosphorous, sulfur and magnesium solids.
本数据集包含千余种具有生化重要性的物种及其混合物的标准代谢势能(standard metabolic potentials)表,涵盖两种温度与三种pH条件下的相关数据。
该数据表为《Westerhoff等人(2026)FEBS J. 代谢热力学:相关参考态与能量势能》一文的补充材料S3(表2)。
该文献详细阐述了如何基于对应化学物种的标准化学势能(standard chemical potentials)计算得到上述代谢势能。
此类标准代谢势能指在代谢标准态下,由生物前体物质生成各物质的标准生成自由能。代谢标准态具体参数为:pH=7、pMg=3、溶剂水摩尔占比99.5%,且总无机磷酸盐、硫酸盐、碳酸氢盐及铵盐混合物的浓度均为1 mM。
相较于物理化学参考态下的标准化学势能,此类标准代谢势能在生化与生物学研究应用中更具实际参考价值。
后者即基于物理化学参考态的生成自由能,该参考态具体为:分压1 bar的氢气、氧气、氮气,以及石墨、磷、硫与镁固态单质。
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2025-12-31



