On 2/4/11 1:56 PM, flavio seixas wrote:
I'm trying to built a protein with 4 identical chains using the symmetry restrain to CA atoms as section "2.2.11 Building multi-chain models with symmetry" from modeller 9v7 manual.
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The problem is that the program stops and the following error message appears at the shell: self.restraints.symmetry.append(symmetry(s1, s2, s3, s4, 1.0)) TypeError: __init__() takes exactly 4 arguments (6 given)
Just like the error message says, you cannot create a symmetry element that contains 4 selections. As in the example, it can only contain 2 selections; it is a pairwise restraint. So you would need to restrain each pair (s1-s2, s2-s3 and s3-s4) individually.
For an example, see http://salilab.org/archives/modeller_usage/2009/msg00084.html Ben Webb, Modeller Caretaker -- modeller-care@salilab.org http://www.salilab.org/modeller/ Modeller mail list: http://salilab.org/mailman/listinfo/modeller_usage