| 释义 |
double helix
double helixn. 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.double helix n (Biochemistry) biochem the form of the molecular structure of DNA, consisting of two helical polynucleotide chains linked by hydrogen bonds and coiled around the same axis dou′ble he′lix
n. the spiral arrangement of the two complementary strands of DNA. [1953] Thesaurus| Noun | 1. |  double helix - a pair of parallel helices intertwined about a common axis; "the shape of the DNA molecule is a double helix"helix, spiral - a curve that lies on the surface of a cylinder or cone and cuts the element at a constant angle |
EncyclopediaSeehelixdouble helix
helix [he´liks] (pl. he´lices, helixes) (Gr.) 1. a winding structure; see also coil and spiral.2. the superior and posterior free margin of the pinna of the ear.α-helix (alpha helix) the complex structural arrangement of parts of protein molecules in which a single polypeptide chain forms a right-handed helix.double helix (Watson-Crick helix) the structure of deoxyribonucleic acid (DNA), consisting of two coiled chains, each of which contains information completely specifying the other chain.Wat·son-Crick he·lix (waht'sŏn crik), the helical structure assumed by two strands of deoxyribonucleic acid, held together throughout their length by hydrogen bonds between bases on opposite strands, referred to as Watson-Crick base pairing. See: base pair. Synonym(s): DNA helix, double helix, twin helix [James Dewey Watson, Francis H. C. Crick] double helixn. 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.double helix A structural motif of nucleic acids in which 2 complementary chains of DNA and/or RNA spiral around each other as paired nucleobases attached to a deoxyribose phosphate backboneWat·son-Crick he·lix (waht'sŏn-krik' hē'liks) The helical structure assumed by two strands of deoxyribonucleic acid, held together throughout their length by hydrogen bonds between bases on opposite strands, referred to as Watson-Crick base pairing.
See also: base pair
Synonym(s): DNA helix, double helix. [James Dewey Watson, Francis H. C. Crick]Watson, James Dewey, U.S. geneticist and Nobel laureate, 1928–. Watson-Crick helix - the helical structure assumed by two strands of deoxyribonucleic acid. Synonym(s): DNA helix; double helix; twin helixdouble helix
Words related to double helixnoun a pair of parallel helices intertwined about a common axisRelated Words |