DEFit (Dipolar Evolution Fit)

DEFit ScreenshotDEFit is a Double Electron-Electron Resonance (DEER) data analysis program which assumes models of overlapping Gaussian shaped distance distributions between spins. DEFit utilizes Monte Carlo/SIMPLEX curve fitting to actual data, not to Fourier transform. The program is written in Matlab and is provided as source code.


-Matlab v7.0.1 or higher with optimization toolbox.


-Download latest version below
-Extract to any folder
-Run Matlab
-Navigate to the folder where you extracted DEFit
-Run DEFit.m

Latest version is 4.1 (September 2009)
Download the zip file here.
A quick start guide is included in the package.


Sen KI, Logan TM, and Fajer PG (2007) Biochemistry 46, 11639-11649.

2 thoughts on “DEFit (Dipolar Evolution Fit)

  1. Dear Ilker,

    I would like to ask you some questions about DEFit but I could not find any email adresses of you.

    If you write me back I will be more than happy!


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s