Hello, go to the followign web page and downloadthe the toppar stream file that contains
parameters for aromatic fluorine as well as a variety of other pyridines. note
that this file should be streamed after reading the standard protein topology
and parameter files (this is a new file so there may be missing atom
types etc., but following correction of the errors everything you need
should be there). alex

http://www.pharmacy.umaryland.edu/faculty/amackere/force_fields.htm
toppar_all22_prot_pyridines.str


School of Pharmacy
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