释义 |
complementary base pairing
complementary base pairing[‚käm·plə¦men·tə·rē ¦bās ′per·iŋ] (cell and molecular biology) The formation of weak hydrogen bonds between complementary nitrogenous bases (for example, guanine and cytosine) on opposite strands of a double-stranded nucleic acid molecule (such as deoxyribonucleic acid), contributing to the overall stability of the double-stranded structure. complementary base pairing
complementary base pairing the arrangement of NUCLEOTIDE BASES so that purines bond with pyrimidines, as occurs in the two polynucleotide chains of DNA (adenine with thymine, guanine with cytosine) and between DNA and MESSENGER RNA nucleotides during TRANSCRIPTION. See Fig. 136. |