Dear CCP4bb list,
Thank you very much all of you who have answered my post. I'm really
sorry if I was unclear. Such operation is so unusual that I could be
able to express myself appropriately. From quick reading some replies
(James Stroud and Guillaume Ponchel), it seems is possible do build
artificial tetramers with Coot. Several problems have been raised like
clashes, unusual interfaces and so on. A second step would be to take
Coot's rotation and translation matrix and apply it to all pdb's in
batch mode with pdbset. All pdb's are superposed by a common sequence
region, which also will be part of the tetramer interface. I'll try to
make things work.
Once more, sorry for any inconvenience and thank you very much.
Kind regards,
Fred