secondary structure defined in DSSP secondary structure secondary structure secondary structure Secondary structure secondary structure structure structure secondary structure structure secondary structure secondary structure secondary structure secondary structure ribbon diagram structure structure secondary structure structure secondary structure structural structure secondary structure structure structural secondary structure structure secondary structure secondary structure secondary structure structure structure secondary structure Secondary structure secondary structure structural structural secondary structure secondary structure secondary structure structure structure secondary structure secondary structure structure Full article >>> secondary structure structure structure structure structure Secondary structure secondary structure secondary structure Secondary structure structural secondary structure secondary structure secondary structure structure secondary structure secondary structure secondary structure secondary structure secondary structure secondary structure structure structure secondary structure structural secondary structure structural secondary structure secondary structure secondary structure secondary structure secondary structure Secondary structure Wikipedia's page on secondary structure secondary structure secondary structure Secondary structure secondary structure secondary structure secondary structure secondary structure structures secondary structure Secondary structure http://en.wikipedia.org/wiki/Secondary_structure Secondary structure secondary structure secondary structure secondary structure http://en.wikipedia.org/wiki/Secondary_structure secondary structure secondary structure Secondary structure secondary structure secondary structure Secondary structure structure secondary structure Secondary structure structure secondary structure secondary structure secondary structure secondary structure structures structure secondary structure secondary structure secondary structure secondary structure http://en.wikipedia.org/wiki/Secondary_structure secondary structure structure Secondary structure structure structure structures