HELP: thermodyn data of phosphotyrosine/tyrosine

[WILFRIED WOLF]

hello everybody out there!

a friend of mine is searching for delta-H and/or delta-G of the phosphorylation
of tyrosine, so any hint where to find data of formation energies of
(L-para-)phosphotyrosine and tyrosine itself or thermodynamic data concerning
the above mentioned reaction itself would be very much appreciated.

thanx
          willi

ps: could you please mail to me directly, since i don't often look in these
newsgroups (E-Mail: WOLF_W at FHI-Berlin.MPG.DE)