<div>Dear Users.</div>
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<div>Maybe this question is easy for all, but i have problems, patience please.</div>
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<div>I do not have experience with metals, now I have a protein (crystal) with Fe+2, which is coordinating with three HISTIDINES, one D and two molecules of water, when I try to run "pdb2gmx" the program tells me "Residue "FE" not found in residue topology database". I opened the database for forcefield ffG43a1 and only found FE for heme group. I <span class="short_text" id="result_box"><span onmouseover="this.style.backgroundColor='#ebeff9'" title="busque en otras bases de datos para HIERRO, pero la mayoria hace referencia a grupos hemo" style="BACKGROUND-COLOR: #fff" onmouseout="this.style.backgroundColor='#fff'">search other forcefields for iron+2, but most refer to heme groups. Why? and what happend with Fe+2?</span></span></div>
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<div>What can i do? I would very grateful if someone gives advices or ideas.</div>
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<div>thanks in advance</div>
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<div>Miguel</div>