[Complexes of DNA with trivalent metal ions in presence of manganese ions].
The interaction of DNA with Fe3+, Al3+, Co(NH3)6(3+) in a solution containing MnCl2 was studied. It was shown that there exists a competition for the binding sites between Mn2+ and Al3+, while the binding of Mn2+ to DNA does not depend on the presence of Fe3+ and Co(NH3)6(3+) in solution. We proposed that Fe3+ and Co(NH3)6(3+) ions prefer to bind to phosphates, and Al3+ ions are capable to bind to the nitrogen bases of DNA.
Kas'ianenko
N A
NA
Physical Department, St. Petersburg State University, Ul'yanovskaya ul. 1, Petrodvorets, 198904 Russia.
Plotnikova
L V
LV
Zanina
A V
AV
Anderzhanov
A Sh
ASh
Defrenne
S
S
D017607:Aluminum Compounds / Q000737:chemistry*; D002412:Cations; D002942:Circular Dichroism; D003035:Cobalt / Q000737:chemistry*; D004247:DNA / Q000737:chemistry*; D005290:Ferric Compounds / Q000737:chemistry*; D017895:Manganese Compounds / Q000737:chemistry*; D009690:Nucleic Acid Conformation; D012996:Solutions
D017607:Aluminum Compounds; D002412:Cations; D005290:Ferric Compounds; D017895:Manganese Compounds; D012996:Solutions; D003035:Cobalt; D004247:DNA
Izuchenie kompleksov DNK s trekhvalentnymi ionami metallov v prisutstvii ionov margantsa.