释义 |
DictionarySeebase pairnucleotide pair
base pair (b.p., bp), the complex of two heterocyclic nucleic acid bases, one a pyrimidine and the other a purine, brought about by hydrogen bonding between the purine and the pyrimidine; base pairing is the essential element in the structure of DNA proposed by J. Watson and F. Crick in 1953; usually guanine is paired with cytosine (G·C), and adenine with thymine (A·T) or uracil (A·U). Synonym(s): nucleoside pair, nucleotide pairFig. 234 Nucleotide pair . Complementary base pairing. P = phosphate, S = sugar, A = adenine,T = thymine. nucleotide pair two NUCLEOTIDES of opposite strands of DNA, joined by weak hydrogen bonds (see Fig. 234 ). See COMPLEMENTARY BASE PAIRING. |