Protein 3D structure viewed with Pymol is not the same that in I-tasser server

Hi,

I will like to know why the pdb file of a protein tertiary structure prediction (job id S163171) viewed with Pymol is not that same same structure reported in the I-tasser server? In the I-tasser server I can see that the 3D predicted protein has alpha helix, beta sheets, and random coils. But when I open the PDB file with Pymol I can only see alpha helix, and random coils. Why Pymol does not show the beta sheet structures? Is there a way to fix this problem?

I will appreaciate very much your help in this matter.