<font color="#222222" face="arial, sans-serif" style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">Hi Pavel and Bryan,</font><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">
<font color="#222222" face="arial, sans-serif"><br></font></div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif"><font color="#222222" face="arial, sans-serif">thanks for the info. With it I was able to correctly define the symmetry-related links as per this example:</font></div>
<div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif"><font color="#222222" face="arial, sans-serif"><br></font></div><div style="color:rgb(34,34,34);font-size:13px;font-family:arial,sans-serif">
<font color="#222222" face="arial, sans-serif"><div>refinement.geometry_restraints.edits {</div><div>� bond {</div><div>� � action = *add</div><div>� � atom_selection_1 = name ZN � and chain C and resname ZN and resseq � �1</div>
<div>� � atom_selection_2 = name �NE2 and chain A and resname HIS and altid A and resseq � 39</div><div>� � symmetry_operation = -x+1,y+1/2,-z+1/2</div><div>� � distance_ideal = 2.030000</div><div>� � sigma = 0.050</div>
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� }</div><div><br></div><div>Unfortunately, this didn't have the desired result. �Instead, the addition of riding hydrogens fixed the problem.</div><div><br></div><div>Cheers,</div><div><br></div><div>Alex</div></font></div>
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