Hi Mike, That error typically means that either there are bad bonds in the molecule (which could be the fault of Chimera or a problem with the input) or that a non-sp2 atom has been wrongly assigned an sp2 type (usually Chimera's fault alone). Could you provide the structure that elicits the error so that I can investigate? Thanks. --Eric Eric Pettersen UCSF Computer Graphics Lab pett@cgl.ucsf.edu http://www.cgl.ucsf.edu On Jul 13, 2007, at 5:08 AM, Mike Gretes wrote:

Hello,

When trying to calculate hydrogen bonding between two molecules, I get the error:

"ValueError: More than 2 coplanar positions specified!"

I have successfully calculated h-bonding between two other similar molecules, so I'm not sure what the problem is (I have no alternate conformations or anything weird in the PDB files I don't think... is there anything that usually triggers this error?)

thanks!

mike

___________________

Michael Gretes PhD Candidate (Structural Biology) Senior Graduate Trainee, Michael Smith Foundation for Health Research NCJ Strynadka Laboratory Dept. of Biochemistry, University of British Columbia Life Sciences Center, 2350 Health Sciences Mall Vancouver, BC Canada V6T 1Z3 phone 604 822 7729 fax 604 822 5227 ____________________

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