A curve on the surface of a cylinder or cone such that its angle to a plane perpendicular to the axis is constant; the three-dimensional curve seen in a screw or a spiral staircase
The molecular conformation of a spiral nature, generated by regularly repeating rotations around the backbone bonds of a macromolecule Pure and Appl chem, 1989, 61, 769 IUPAC Macromolecular Nomenclature for Crystalline polymers
= A coiled structure If you take a string and coil it around your finger, with no overlaping, you will have a helix A spring is also a helix See Double-Helix Herbal phen-fen = A combination of St Johns Wort and Ma Huang (ephedra) Sold by Nutri/System There are no studies to show this works
A continuous turn that maintains a constant radius over more than 360 degrees, typically 540 degrees or more Ascending helices climb upward while descending helices roll downward
(n) A 3-D curve characterized by a constant rate of curvature about two dimensions and a constant linear translation in the third Threads on screws and bolts are helical and are classified as being either right- or left-handed
A secondary structure found in many proteins, where the amino acids are arranged in a coil, or helix, with almost no free space on the inside and all side chains being pointed towards the outside
The coiled structure of double-stranded DNA in which strands linked by hydrogen bonds form a spiral configuration, with the two strands oriented in opposite directions. a shape consisting of two parallel spirals that twist around the same centre, found especially in the structure of DNA
The spiraling lattice of double-stranded DNA that contains the genetic information pertinent to the organism The sides of the lattice - its spine - are composed of sugar and phosphate molecules The crosspieces, or rungs, are made up of base pairs, also known as nucleotides
The spiraling lattice of double-stranded DNA that contains the genetic information pertinent to the organism The sides of the lattice -- its spine -- are composed of sugar and phosphate molecules The crosspieces, or rungs, are made up of base pairs, also known as nucleotides
A term often used to describe the configuration of the DNA molecule The helix consists of two spiralling strands of nucleotides (a sugar, phosphate, and base), joined crosswise by specific pairing of the bases
Describes the coiling of the antiparallel strands of the DNA molecule, resembling a spiral staircase in which the paired bases form the steps and the sugar-phosphate backbones form the rails
The structural arrangement of DNA, which looks something like an immensely long ladder twisted into a helix, or coil The sides of the "ladder" are formed by a backbone of sugar and phosphate molecules, and the "rungs" consist of nucleotide bases joined weakly in the middle by hydrogen bonds
The spiraling lattice that two individual strands of DNA assume when bonded together by base pairing The sides of the lattice -- its spine -- are composed of sugar and phosphate molecules The crosspieces, or rungs, are made up of base pairs, also known as nucleotides
A type of secondary structure of DNA molecules in which two antiparallel polynucleotide strands are coiled in a right-handed manner about the same axis
The twisted-ladder shape that two linear strands of DNA assume when complementary nucleotides on opposing strands bond together Source : Human Genome Project Information
A term often used to describe the configuration of the DNA molecule The helix consists of two spiraling strands of nucleotides (a sugar, phosphate, and base), joined crosswise by specific pairing of the bases See also Deoxyribonucleic acid; Base; Base pair
A term used to describe the configuration of a DNA molecule The helix consists of two spiraling strands of nucleotides held together with chemical bonds