32.1.117 Hill1
Contents
Function
\[y = START+(END-START)\frac{x^n}{k^n+x^n}\]
Brief Description
Modified Hill function with offset.
Sample Curve
Parameters
Number: 4
Names: START, END, k, n
Meanings: START = Start, END = End, k = Michaelis constant, n = Cooperative sites (Hill coefficient)
Lower Bounds: k>0, n>0
Upper Bounds: none
Derived Parameters
The concentration for 10% response: EC10=k/9^(1/n)
The concentration for 20% response: EC20=k/4^(1/n)
The concentration for half-way response: EC50=k
The concentration for 80% response: EC80=k*4^(1/n)
The concentration for 90% response: EC90=k*9^(1/n)
Script Access
nlf_Hill1(x,START,END,k,n)
Function File
FITFUNC\HILL1.FDF
Category
Growth/Sigmoidal