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Wednesday, May 02, 2012
1:30 PM - 3:00 PM
CNLS Conference Room (TA-3, Bldg 1690)

Colloquium

Protein Simulations at constant pH. Sometimes a pKa is not a pKa

Adrian Roitberg
University of Florida, Gainesville

I will present a methodology to simulated protein dynamics and ensemble properties under a constant pH constraint, instead of the usual constant protonation paradigm. The method will be used to predict pKas of proteins. The results show that when substantial conformational changes happen as a function of pH, then the experimentally reported pKas cannot be considered to be simple protonation changes. This new view can have repercussions in our understanding of buried charged residues in proteins.

Host: Sergei Tretiak, T-1, 667-8351