Biochemistry published new progress about 10517-44-9. 10517-44-9 belongs to catalysis-chemistry, auxiliary class Salt,Amine,Aliphatic hydrocarbon chain, name is Propane-1,3-diamine dihydrochloride, and the molecular formula is C3H12Cl2N2, HPLC of Formula: 10517-44-9.
Padmanabhan, S. published the artcileRelative affinities of divalent polyamines and of their N-methylated analogs for helical DNA determined by sodium-23 NMR, HPLC of Formula: 10517-44-9, the publication is Biochemistry (1991), 30(30), 7550-9, database is CAplus and MEDLINE.
Interactions of divalent polyamines with double-helical DNA in aqueous solution are investigated by monitoring the decrease in 23Na NMR relaxation rates as NaDNA is titrated with H3N+-(CH2)m-+NH3, where m = 3, 4, 5, or 6. Analogous measurements are made for the same homologous series of methylated polyamines (methonium ions). The dependence of the 23Na relaxation rates on the amount of added divalent cation (M2+) is analyzed quant. in terms of a two-state model. The sodium ions are assumed to be in rapid exchange between a bound state, where they are close enough to DNA so that it affects their relaxation rate, and a free state in bulk solution, where their relaxation rate is the same as in solutions containing no DNA. The distribution of Na+ and M2+ between these states is described quant. in terms of an ion-exchange parameter: DMú·(pBM)(1 – pBNa)n/(pBNa)n(1 = pBM), where pBNa and pBM are the fractions of Na+ and M2+ that are close enough to DNA to be considered bound (by the NMR criterion), and n is the number of sodium ions displaced from DNA by the binding of one M2+ ion. For each of the polyamines and methonium ions investigated here, equations derived from this two-state model yield acceptable fittings of the titration curves if rNao, the number of sodium ions bound per DNA phosphate when no competing cations are present, is assigned a value between 0.6 and 1.00. Within this range, changing the value assigned to rNao does change the best-fitted values of DM determined for the polyamines (DH) and for the methonium ions (DMe) but does not alter the following conclusions about the trends in these parameters. (1) For polyamines and methonium ions of the same m, DH exceeds DMe by factors that are significantly larger for m = 3 and 4 than for m = 5 and 6. (2) DH For m = 3 and 4 is larger than DH for m = 5 and 6. (3) DMe For m = 3 and 4 is smaller than DMe for m = 5 and 6.
Biochemistry published new progress about 10517-44-9. 10517-44-9 belongs to catalysis-chemistry, auxiliary class Salt,Amine,Aliphatic hydrocarbon chain, name is Propane-1,3-diamine dihydrochloride, and the molecular formula is C3H12Cl2N2, HPLC of Formula: 10517-44-9.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia