Page 217 - Thermodynamics of Biochemical Reactions

BasicBiochemData2 217

I 8.0 Calculation of the standard transformed enthalpies of formation of

reactants at pH 5, 6, 7, 8, and 9 and ionic strength 0.25 M

listhgHreactants={acetaldehydehpH,acetatehpH,acetonehpH,adenosinehpH,adphpH,alaninehpH,
ammon~ah~H,amphpH,arab~nosehpH,asparag~neLhpH,aspartatehpH,
atphpH,citratehpH,co2ghpH, coatothpH, coaqhpH, coghpa,
ethanolhpa, ethylacetatehpH,
formatehpli, fructosehpH, fumaratehpa, ga1actosehpI-I. glucosehpli,
glucose6phoshpH,glutamatehpH, glutaminehpli,
g1ycerolhpI-I. glycinehpli, glycylglycinehpH, h2aghpH. h2ghpH, haohpH,
h202aqhpH,indolehgH, lactatehpa, lactosehpH,leucineLhpH,
maltosehpli, mannosehpH, methaneghpa,
methaneaghpa, methanolhpH,methylamineionhpIi, n2aghpH.
nlghpli, nadoxhpH, nadpoxhpH, nadpredhpH, nadredhpa, oaaghpli,
02ghpH, pihpH,ppihpH, propanol2hpH,
pyruvatehpa, ribosehpH, ribose5phoshpH,ribulosehpH,
sorbosehpH, SuccinatehpH, sucrosehpH, tryptophaneLhpH, ureahpH, valineLhpH,
xylosehpH,
xylulosehpH);
Clear[acetaldehydehpH,acetatehpH,acetonehpH,adenosinehgH,adghpH,alaninehpH,ammoniahpH,a
mphpH.arabinosehpH,asparagineLhpH,aspartatehpH,
atphpH,citratehpH,co2ghpH, co2tothpH. coaghpli, coghpH,
ethanolhpH, ethylacetatehpa,
formatehpH, fructosehpH, fumaratehpa, galactosehpH, glucosehpH,
glucose6phoshpH,glutamatehpHr glutaminehpa,
glycerolhpH, glycinehpH, glycylglycinehpH, h2aghpH, h2ghpH, haohpH,
h202aqhpH,indolehpH, lactatehpa, lactosehpH,leucineLhpH,
maltosehpH, mannosehpH, methaneghpa,
methaneaghpH, methanolhpH,methylamineionhpH, naaghpIi,
n2ghpH, nadoxhpa, nadpoxhpH, nadpredhpH, nadredhpH, 02aghpH,
02ghpHr pihpIi,ppihpH, propanol2hpH,
pyruvatehpH, ribosehpH, ribose5phoshpH,ribulosehpH,
sorbosehpli, succinatehpH, sucrosehpli, tryptophaneLhpH, ureahpH, valineLhpH,
xylosehpli,
xylulosehpHl ;
calcdH5pH[reactanth~]:=Module[{outl,out2,out3,out4,out5},(*This program calculates the
standard transformed enthalpies of formation at 298 K, ionic strength 0.25 M and pHs
5, 6, 7, 8, and 9. The reactanth name calls a function of pH and ionic strength or a
constant.*)
outl=reactanth/.{pH->S,is->.25);
out2=reactanth/.{pH->6,is->.25);
out3=reactanth/.{pH->7,is->.25>;
out4=reactanth/.{pH->8,is->.25);
out5=reactanth/.{pH->9,is->.251;
{outl,out2,out3,out~,out5)];

Map is used to apply calcdH5pH to each of the functions for the reactants.

Evaluate[listhpHreactants] = Map[calcdH5pH, listfnpaish];

’Table 4 Standard Transformed Enthalpies of Formation (in kJ mol-” ) of Biochemical Reactants at I = 0.25 M and pHs of 5,
6, 7, 8, and 9.