Research Article

Coordination Reactions and Noncovalent Interactions of Polyamines with Nucleotides in Binary Systems and with Nucleotides and Copper(II) Ion in Ternary Systems

Table 1

Overall protonation constants, overall stability constants , and equilibrium constants of adducts formation in AMP/tn-1, AMP/tn-2, CMP/tn-1, and CMP)/tn-2 systems.

SystemsEquilibriumlog

LigandsAMP + H+ H(AMP) 6.43 6.43
AMP + 2H+ H2(AMP) 10.45 4.02
CMP + H+ H(CMP) 6.42 6.42
CMP + 2H+ H2(CMP)10.90 4.48
tn-1 + H+ H(tn-1)9.96 (1)9.96
tn-1 + 2H+ H2(tn-1)16.62 (1)6.66
tn-2 + H+ H(tn-2)9.80 (1)9.80
tn-2 + 2H+ H2(tn-2)16.41 (1)6.61

AMP/tn-1AMP + 4H+ + tn-1 (AMP)H4(tn-1)31.55 (6)4.49
AMP + 3H+ + tn-1 (AMP)H3(tn-1)27.63 (6)4.58
AMP + 2H+ + tn-1 (AMP)H2(tn-1)21.13 (6)4.51
AMP + H+ + tn-1 (AMP)H(tn-1)13.08 (6)3.12

CMP/tn-1CMP + 4H+ + tn-1 (CMP)H4(tn-1)30.87 (5)3.91
CMP + 3H+ + tn-1 (CMP)H3(tn-1)26.50 (4)4.02
CMP + 2H+ + tn-1 (CMP)H2(tn-1)20.20 (4)4.14
CMP + H+ + tn-1 (CMP)H(tn-1)12.50 (3)2.91

AMP/tn-2AMP + 4H+ + tn-2 (AMP)H4(tn-2)30.81 (5)3.95
AMP + 3H+ + tn-2 (AMP)H3(tn-2)26.76 (4)3.92
AMP + 2H+ + tn-2 (AMP)H2(tn-2)20.40 (4)3.99
AMP + H+ + tn-2 (AMP)H(tn-2)12.91 (3)3.11

CMP/tn-2CMP + 4H+ + tn-2 (CMP)H4(tn-2)30.77 (1)3.46
CMP + 3H+ + tn-2 (CMP)H3(tn-2)26.38 (1)3.55
CMP + 2H+ + tn-2 (CMP)H2(tn-2)20.19 (1)3.78
CMP + H+ + tn-2 (CMP)H(tn-2)12.88 (1)3.08

*log  were calculated using protonation and overall stability constants of particular species, for example: log  log  log  .