Distinguishing three-dimensional structures characteristically formed by homologous protein sequences.

Synonyms: Structure Element, Protein, Protein Structure Element, Structural Element, Protein, Protein Structural Units, Protein Structural Unit, Protein Structural Elements, Structural Elements, Protein, Structural Unit, Protein, Element, Protein Structural, Structure Elements, Protein, Protein Structure Elements, Elements, Protein Structural, Structural Units, Protein, Protein Structural Element