<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:'times new roman', 'new york', times, serif;font-size:12pt"><div>Hello,</div><div><br></div><div> I am curious - is there anyway to see what assumptions were made when parameterizing the Zn 2+ ion? Was it tetrahedrally or octahedrally coordinated? With waters only or with imidazoles? Do the different force fields make different assumptions? Guidance appreciated.</div><div><br></div><div>Regards, Marc</div><div style="position:fixed"></div></div></body></html>