IUBio

Electrotransfer proteins for Edman sequencing

Emir Khatipov khatipovNO at NOuchicago.edu
Fri Nov 2 20:21:31 EST 2001


Hello All,
Could someone recommend me a good protocol for SDS-PAGE and subsequent
transfer of proteins onto PVDF membrane for subsequent Edman sequencing?

Which PVDF membrane did you use, how did you deal with non-polymerized
acrylamide that can modify proteins and impair sequencing, what transfer
buffers worked for you best, etc. Should I use PAGE buffers different from
Tris-glycine (Borate?), and do I have to care about glycine on Page stage at
all? I know that CAPS buffer is a good alternative for Tris glycine transfer
buffer, but I am concerned that high pH of the buffer (pH 11) will cause
modification of side chains of amino acids. In other words, I good detailed
working protocol would be very much appreciated, or pointers to published
resources.

Thank you.
Emir

University of Chicago
Radiation Oncology





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