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Team:Aberdeen Scotland/Curve Fitting
From 2010.igem.org
University of Aberdeen - ayeSwitch
Curve Fitting to find the Hill Coefficient for the GFP/Bbox-stem Association (n2)
Based on a graph in a paper by Witherell et al.[14] which showed the binding curves of the MS2 stem loop we could calculate more accurately the value for n1. Our two MS2 stem loops (see Fig 1 in Equations) are 19 nucleotides apart, so our binding curve will most closely resemble that of the 8-16 construct, shown in figure 5A (filled squares).
Figure 5. A. Graph from paper by Witherell et al.[14] showing the binding curves of the MS2 stem loop. The filled squares are the 8-16 construct
which closely resembles the binding curves of our MS2 stems. B. The binding curve for the 8-16 construct was reproduced in MATLAB and the Hill
function for activators equation fitted to it (red line).
The curve fitting tool gave the following estimated parameters for β(a), K(b) and n(c):
