LONG Jun, DUAN Leiyu, WANG Xingming, et al. Interactions between β-Cyclodextrin-4-Benzyloxyphenol Inclusion Compound and Herring Sperm DNA[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2013,52(6):86-92.
LONG Jun, DUAN Leiyu, WANG Xingming, et al. Interactions between β-Cyclodextrin-4-Benzyloxyphenol Inclusion Compound and Herring Sperm DNA[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2013,52(6):86-92.DOI:
the interaction between β-cyclodextrin-4-Benzyloxypheno (β-CD-PBP) and herring-sperm DNA was studied in physiological buffer solution (pH=7.4) by fluorescence spectroscopy
thermodynamic analysis and viscosity method. Based on the mole ratio method and linear method
the parameters were determined as follows: the binding ration
β-CD
: n
PBP
=1 : 1 and binding constantK
f
= 7.39×10
3
L·mol
-1
. The binding ratio was n
DNA
: n
β-CD-PBP
=1 : 9
the thermodynamic perameters were Δ
r
H
m
θ
=1.44×10
5
J/mol,Δ
r
G
m
θ
300.15K
=-1.97×10
4
J/mol,Δ
r
S
m
θ
=549.32 J/(mol·K)
Δ
r
S
m
θ
was the primary driven power of this interaction
the binding constants were K
300.15K
=2.86×10
3
L/mol,K
310.15K
=2.69×10
4
L/mol. These results indicated that the interaction between β-CD-PBP and herring-sperm DNA belonged to electrostatic and part intercalation.