Dear mary:
I have just worked with standards and my experience is that Phosphothreonine
is cleaved under acidic hydrolysis, leading to threonine, up to 60% of the
initial Phosphoderivative. P-Thr coelutes with aspartic acid in the PTC
procedure, in the 420 ABI Model, so you will see a higger aspartic than
expected ( due to the 40 % of the initial phosphoderivative ).
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Susana Linskens
LANAIS-PRO
Junin 956
1113 Buenos Aires - ARGENTINA
linskens@qb.ffyb.uba.ar
FAX: 54-11-4508-3652
Phone: 54-11-4508-3651
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