User’s Guide to combine.cc The text file combine.cc is source code that can be compiled using the C++ compiler and executed in UNIX systems. The user would be asked to input the polypeptide to be predicted. The input should be a string of polypeptide sequence with less than 650 amino acids. Each amino acid is represented by one character (if the user needs to predict the polypeptide longer than 650 amino acids, the value of INPEP can be changed to the desired length before the file is compiled). The input string should be ended by ‘*’. After the polypeptide sequence is input the user should hit “return”. The input is analyzed and the result displayed on the screen. This output can be redirected to a file, if desired. Helix and sheet predictions are clearly indicated on the output. Absence of a prediction signifies non-helix, non-sheet. To predict multiple polypeptides, the user must enter each polypeptide separately. Copyright, Chuck Staben and Qing Chang, 2/1/99