For, example a nucleoside modified with a pyridine-2, 6-dicarboxylate has shown to bind tightly to Cu 2 +, whereas other divalent ions are only loosely bound.
12.
Whether or not this mechanism requires a divalent ion is currently unclear, but failed attempts to trap and detect the presence of the magnesium cation suggest that this mechanism is metal ion independent.
13.
The later stages of this process involve the formation of RNA tertiary structure, which is stabilized almost largely through the binding of divalent ions such as magnesium with possible contributions from potassium binding.
14.
The temperatures and the timings used for each cycle depend on a wide variety of parameters, such as : the enzyme used to synthesize the DNA, the concentration of divalent ions and deoxyribonucleotides ( dNTPs ) in the reaction and the bonding temperature of the primers.
15.
If divalent ions such as calcium are considered, terms such as " e " 2? appear, which is the square of " e " ?; in this case, the formula for the Goldman equation can be solved using the quadratic formula.
16.
It is suggested that the crystal morphology of ettringite Ca 6 Al 2 ( SO 4 ) 3 ( OH ) 12 ?6H 2 O can incorporate a variety of divalent ions : Cu 2 +, Pb 2 +, Cd 2 + and Zn 2 +, which can substitute for the Ca 2 + by incorporating these ions into the lattice.
