If you are interested in develop parameters for Fe2+ suitable to your system without huge computational efforts, see this reference:

de Araujo, AS; Sonoda, MT; Piro, OE, et al. JOURNAL OF PHYSICAL CHEMISTRY B Volume: 111 Issue: 9 Pages: 2219-2224


Alexandre


Zhong Zheng escreveu:
hi all

I have an isolated iron in the protein. If I don't' put that iron in, everything runs through fine. However, if I put the iron in, the mdrun step (doing energy minimization) will clash. It says segmentation fault and lots of LINCS WARNING. The iron has a +2 charge with four His ligands and one Glu ligand. The total charge for the complex should be +1. Is there a good way to treat this isolated iron?

 Thanks a lot.


Zhong Zheng

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--
**************************************************************
Alexandre Suman de Araujo                                    *
Faculdade de Ciências Farmacêuticas de Ribeirão Preto        *
Universidade de São Paulo                                    *
Dep. de Física e Química                                     *
Grupo de Física Biológica     * e-mail: asara...@fcfrp.usp.br*
Av. do Café, s/n°             * e-mail: ale.su...@gmail.com  *
CEP: 14040-903                * Phone: +55 (16) 3602-4172    *
Ribeirão Preto, SP, Brasil    * Phone: +55 (16) 3602-4222    *
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