I have encountered this problem with energy minimization of pyrazinamidase molecule. This molecule contains within its structure iron atom which Chimera does not support. Therefore I cannot find the way to overcome this problem. Is there any way to add iron to supported elements or any other way to solve this?

Best regards

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Ondrej Holas Ph.D.
Department of Pharmaceutical Chemistry and Drug Control
Faculty of Pharmacy
Heyrovského 1203
500 05 Hradec Kralove