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  • Chemical
  • In enzymology, an ATP adenylyltransferase (EC 2.7.7.53) is an enzyme that catalyzes the chemical reaction ADP + ATP ⇌ {\displaystyle \rightleftharpoons } phosphate + P1,P4-bis(5'-adenosyl) tetraphosphate Thus, the two substrates of this enzyme are ADP and ATP, whereas its two products are phosphate and P1,P4-bis(5'-adenosyl) tetraphosphate. (wikipedia.org)
  • Upon
  • Upon cleavage of dimethoxytrityl group from 13, dinucleoside phosphates 16 are initially transformed into trinucleoside diphosphates 19 and then the 2-azidomethylbenzoyl is selectively removed under neutral conditions to generate trinucleoside diphosphates 5 in excellent yield. (ibch.ru)
  • give
  • The procedure starts with condensation reactions of P-components with N-acyl nucleosides, bearing the 3 '-hydroxyl function protected with 2-azidomethylbenzoyl, to give fully protected dinucleoside phosphates 13. (ibch.ru)
  • units
  • The significance of this geometrical change has been demonstrated in the conformational transmission in DNA for the B-Z transition with alternating CpG units under selective phosphate shielding. (wikipedia.org)