Mannose-substituted PPEs detect lectins: A model for Ricin sensing
作者:Ik-Bum Kim、James N. Wilson、Uwe H. F. Bunz
DOI:10.1039/b416587j
日期:——
The interaction of a mannose-substituted poly(para phenyleneethynylene) (mPPE) with a lectin, Concanavalin A (ConA), is reported; the ConA causes fluorescence quenching of the mPPE with a KSV of 5.6 × 105.
Fluorescence Self-Quenching of a Mannosylated Poly(<i>p</i>-phenyleneethynylene) Induced by Concanavalin A
作者:Ronnie L. Phillips、Ik-Bum Kim、Laren M. Tolbert、Uwe H. F. Bunz
DOI:10.1021/ja802094s
日期:2008.6.1
We report that static quenching of a mannosylated conjugated polymer (sugar-PPE) by Concanavalin A is positively dependent upon sugar-PPE concentration, that is, the recorded Stern-Volmer constants increase with increasing sugar-PPE concentration. Comparison with data obtained from isothermal titration calorimetry (ITC) display the increased sensitivity of the quenching method when compared to ITC. The proposed mechanism suggests the interaction of two or more chains of PPE with one Con A molecule leading to a quenched sugar-PPE-Con A construct.