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Citation: ZHANG Zhao-Hong, ZANG Shu-Liang, GENG Bing, ZHAO Di, WU Lin-You, SU Xin, FENG Chong. Interaction of Chlorotriphenyltin with BSA[J]. Chinese Journal of Applied Chemistry, ;2005, 22(5): 489-493. shu

Interaction of Chlorotriphenyltin with BSA

ZHANG Zhao-Hong ^a,b,, ,
ZANG Shu-Liang ^a ,
GENG Bing ^a ,
ZHAO Di ^a ,
WU Lin-You ^a ,
SU Xin ^a ,
FENG Chong ^a

1.
a Department of Environmental Science, Liaoning University, Shenyang 110036;
2.
b Department of Chemistry, East China Normal University, Shanghai

Corresponding author: ZHANG Zhao-Hong,
Received Date: 27 August 2004
Available Online: 18 November 2004
Fund Project: 国家自然科学基金资助课题(20271042) (20271042)

Chlorotriphenyltin (TPTCl) is one of the major components of ship fouling paints.The spectral characteristics of the interaction of TPTCl with Bovine Serum Albumin (BSA) were studied.The results show that BSA coordinates with the tin ion of the TPTCl,resulting in the exposure of aromatic heterocycle residues of tryptophane and tyrosine in BSA moledule,the benzene ring of TPTCl interacts with BSA through hydrophobic action,which leads to contraction of BSA molecules.The obvious hyperchromic effect was observed in the UV spectra at the beginning,which then weakened with the reaction time.In addition,the UV spectra and the CD spectra show that TPTCl mainly interacts with BSA through coordination when the TPTCl concentration is low,whereas the hydrophobic interaction dominates when the TPTCl concentration is high.The various buffer solutions added favors the interaction of TPTCl and BSA to different extent.The order from strong to weak of hyperchromic effects was KH₂PO₄-NaOH system,Tris-HCl system,HAc-NaAc system,and no buffer system.
- chlorotriphenyltin(TPTCl),
- Bovine Serum Albumin (BSA),
- UV spectrum
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