Analytical Chemistry
Analytical Chemistry
5 years ago

Quantitative Analysis of Ligand Induced Heterodimerization of Two Distinct Receptors

Quantitative Analysis of Ligand Induced Heterodimerization of Two Distinct Receptors
Chang Lu, Zhi-Xin Wang
The induced dimerization of two distinct receptors through a heterobifunctional inducer is prevalent among all levels of cellular signaling processes, yet its complexity poses difficulty for systematic quantitative analysis. This paper first shows how to calculate the amount of any possible complex or monomer of heteroligand and two receptors present at equilibrium. The theory is subsequently applied to the determination of three independent equilibrium parameters involved in the rapamycin induced FKBP and FRB dimerization, in which all parameters were simultaneously estimated using one set of fluorescence resonance energy transfer (FRET) experiments. A MATLAB script is provided for parametric fitting.

Publisher URL: http://dx.doi.org/10.1021/acs.analchem.7b01274

DOI: 10.1021/acs.analchem.7b01274

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