Alanine formation, free energy

Calculate the free energy of formation of L-alanine at 25°C for the reaction ... 

The next example of comparatively simplicity, this time nonaqueous, is the crystalline alanine. There are several products of irradiation of that solid crystalline amino acid. In this state it occurs as zwitterion as NMR shows, i.e. the amine group is protonated -N+H3. Single ionization spurs, of a low energy, cause deamination which leads to detachment of ammonia and formation of a free radical. Pulse radiolysis of single crystals of L-alanine shows, that the alanine derived radical CH3-C H-C02-, which shows the spectrum with maximum at 348 nm [9], stabilizes during 5 milliseconds [10], It is usually observed not spectroscopically but by the EPR method [11] it shows extreme stability, being applied as reference dosimeter. 

A protein-N2 boundary unfortunately cannot be calculated, because the energies of formation of proteins are not yet known. Proteins are presumably more stable than amino acids, because free amino acids such as alanine are rare in nature, while proteins are common. The protein-N2 boundary would represent the highest potential... 

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