k-intrinsic returns a correctly parsed .txt file reporting the intrinsic chemical exchange rate (kint) of each amino acid. Simply enter the amino acid sequence and a project name along with the experimental pD and temperature in kelvin. Please note that the preparation of unique kint .txt files for different protein subsections is unnecessary. Users should simply prepare one file for the whole protein sequence and the correct kint data will be used automatically by HDXmodeller. Please ensure that kint files are prepared with the identical amino acid numbering given in your RFU data file.