Transformed reference potentials

Version 1 (earliest)

• Version 2 (latest)
  
• Version 1 (earliest)
  

Various transformed reference potentials (approximately 1360 for each type) are listed for 320 compounds of biochemical interest.
The transformations are of the Legendre type, but not always Legendre transformations proper. They are gauge shifts: they alter the reference state of the reference thermodynamic potentials. For each chemical element present at a non-zero stoichiometry in the chemical species, that number multiplied by the chemical potential of a biochemical precursor is subtracted. This shifts the reference state for that element away from the element in the physical chemical reference state (i.e., H2, O2, N2 at 1 bar, graphite for C, phosphorous, sulfur and Mg powder, to a more biochemical refrence state That more biochemical reference state consists of the precursors H+ at pH7, Mg2+ at pMg=3, 99.5 mole % water, 1 mM of phosphate, sulfate, bicarbonate and ammonium blends.

The H, I-transformed reference potential at pH7.14 is the apparent creference chemical potential proposed by Alberty et al (2011). The H, I, Mg, mM, O, P, N, S, C transformed reference potential is most suitable for _in vivo _biochemistry. It is given for both T= 298.15 K (data in bold face) and T=310.14 K.

Further details are in https://doi.org/10.1111/febs.70415

The raw source data are the reference chemical potentials (molar Gibbs energy of formation from the elements in their physical chemical reference state) in https://10.15490/fairdomhub.1.datafile.8462.1