I have a disulfide bond defined in the pdb as SSBOND. It shows up in coot as a 
link between the sulfur atoms. But when I use 'sphere refine' the link is 
broken and there is no disulfide bond. The same happens for my CYS  to ZN 
ligands. They are defined with a 'LINK' line in the pdb. How do I tell 'sphere 
refine' to not break these links? Do I need to define a restraint explicitly?
thanks


Kenneth A. Satyshur, M.S., Ph.D.

Senior Scientist,

College of Ag and Life Sciences: Department of Bacteriology;

School of Medicine and Public Health:

Departments of Biomolecular Chemistry,

Neuroscience, Oncology, and Carbone Cancer Center

(Small Molecule Screening Facility)

University of Wisconsin-Madison

Madison, Wisconsin, 53706

608-215-5207

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