ScrewFrame - Uploading a PDB file

ScrewFrame is a geometrical model for protein secondary-structure analysis. Its distinctive features are:
  1. It uses only the positions of the α-carbon atoms and can therefore be applied to low-resolution structures.
  2. The analysis yields a set of three parameters that describe a curve passing through the α-carbon positions. These parameters can be used for assigning secondary-structure elements, but also permit a more nuanced description that includes deformations of these elements, for example when comparing two structures or when analyzing simulation trajectories.
For a complete description of ScrewFrame, see this article or the earlier preprint version. This server performs a ScrewFrame analysis for a single PDB file, which you can upload below. Note that the analysis can take a few minutes. For more complex applications, you can use the published ScrewFrame software.
Enter a PDB file to upload:

NOTE: the analysis may take a few minutes.

ScrewFrame is a geometrical model for protein secondary-structure description and analysis which uses only the positions of the Carbon-α atoms. The complete description of the model can be found here.

MISC Universite d'Orleans Universite de Tours CNRS