Nadesalingam N Palaniyar
npalaniy at uoguelph.ca
Wed Dec 21 14:44:33 EST 1994
I am looking for an enzyme(s) or chemical(s) that could cleave the
phospho-tyrosine bond. This info I am looking for is needed for removing
a protein covalently bound to the DNA. This protein presumably binds the
DNA at the 3'-phosphate through the -OH group in the tyrosine of the
Proteinase K treatment leaves a few amino acids at the end, and this
complicates the mapping (I have selectively labelled the 5' end of the
"cleavage strand"). Labelling the 3'end may not give an accurate mapping,
since I am using a PCR DNA for my experiment (which may have a 3' tail),
and also in that case I need the Maxam/Gilbert sequencing ladder for
the size markers.
I would appreciate any references or suggestions for this phospho-tyrosine
PS: I have contacted technical service reps in a few companies, and they
did not have any useful suggestion.
Thanks in advance.
Dept of Molecular Biology and Genetics
Univ of Guelph
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