From: Takanori N. <tn...@ca...> - 2014-05-24 07:48:48
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Dear all, I noticed a strange behaviour in the handling of SCALEn records in PDB files. When I load 1VW3, all atomic coordinates are scaled down to one thousandth and therefore all atoms get connected. The fact that the coordinates are incorrectly transformed can be confirmed by saving the loaded model again. This is probably due to the presence of SCALEn records: > SCALE1 0.001000 0.000000 0.000000 0.00000 > SCALE2 0.000000 0.001000 0.000000 0.00000 > SCALE3 0.000000 0.000000 0.001000 0.00000 When they are deleted, the model can be loaded correctly. According to the PDB format specification http://deposit.rcsb.org/adit/docs/pdb_atom_format.html#SCALEn , SCALEn records should not affect real space (orthogonal) coordinates. Best regards, Takanori Nakane |