Helices in Proteins

Helical conformations in proteinsHelical conformations in proteins

This page illustrates the 3 most common helical conformations (secondary structures) found in proteins.

All are decapeptide segments extracted from actual protein structures in the PDB. They are shown using the same scale, for a better comparison.

310 helix 3L79_514-525.pdb	alpha helix 1HHO_B_5-16.pdb	pi helix 2QD3_A_346-357.pdb
spinqualitylabelsall models PDB ID 3L79_514-525.pdb Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image	spinqualitylabelsall models PDB ID 1HHO_B_5-16.pdb Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image	spinqualitylabelsall models PDB ID 2QD3_A_346-357.pdb Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image