SEARCH Articles Figures Tables A-helix structure Alpha helix beta structure Alpha helix structure Alpha-Helix, Protein Secondary Structures Coiled coil structures compound helices Collagen triple helix molecular structure Collagen triple helix structural role Collagen triple helix structure Curdlan helix structure Cytosine Double helix structure DNAs Exist as Double-Helix (Duplex) Structures Deoxyribonucleic acid double helix structure Double helix structural changes Double helix structure, supercoiled Double-helix structure Double-helix structure of nucleic acids Extended structures 3, helix Four-helix bundle structures Four-helix bundle structures classes Gelatin triple helix structure Helical polypeptide chain structures 3! helix Helical structures 310 helix Helix pairing, tertiary protein structure Helix structure of DNA Keratin helix structure Nucleic acid double helix structure Protein structure a-helix Protein structure alpha helix Protein structure double helix Protein structure helices Protein structure transmembrane helices Protein structures and a-helices Receptor seven-helix structures Secondary DNA Structure the Double Helix Secondary Structure of DNA The Double Helix Secondary structure a-helix Secondary structure base paired helices Secondary structure helix Structural transitions coil-helix Structure and Replication of DNA The Double Helix Structure of the Double Helix Structured helices Supramolecular helix structure The Structure of DNA and RNA Double Helices is Determined by Watson-Crick Base-Pair Geometry The alpha (a) helix is an important element of secondary structure Transmembrane Helix Structure Variants of the Double-Helix Structure