supersecondary structure
compact three-dimensional protein structure of several adjacent elements of a secondary structure that is smaller than a protein domain or a subunit
structural motif
(in a chain-like biological molecule, such as a protein or nucleic acid) supersecondary structure, which also appears in a variety of other molecules
AT hook, DNA-binding motif
InterPro Conserved Site
helix-turn-helix motif
InterPro Conserved Site