Example sentences for: phosphodiester

How can you use “phosphodiester” in a sentence? Here are some example sentences to help you improve your vocabulary:

  • Removal of negative supercoils from DNA by bacterial type IA topoisomerase involves the following steps: (1) binding of the enzyme to the junction of double-stranded and single-stranded DNA [ 8 ] ; (2) cleavage of a single-strand of DNA near the junction with cleavage sequence preference of a cytosine in the -4 position to form the covalent intermediate [ 9 10 ] ; (3) conformational change of the covalent enzyme-DNA complex to result in physical separation of the 5' phosphate covalently linked to the active tyrosine, and the 3' hydroxyl of the cleaved DNA; (4) passage of the complementary single strand through the break; (5) enzyme conformational change to bring the 5' phosphoryl end back into the proximity of the 3' hydroxyl group of the cleaved DNA; (6) religation of the phosphodiester bond.

  • APEs also have RNase H, 3'-exonuclease, and 3'-phosphodiester activities that are particularly high in the bacterial members of the family [ 26 13 ] .

  • APEs are essential for mammalian cell growth and bacterial survival in the presence of ionizing radiation and DNA mutagens [ 6 ] . They initiate repair of an abasic DNA site by cleaving the phosphodiester backbone 5' of the phosphodeoxyribose.


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