Figure . Legend: The UI is the same for sorting whole sequences or specific regions of a protein molecule except that in the latter case the regions of interest are specified in the bottom row of the UI as shown in the figure. Up to three segments of the protein sequence can be specified. Enter at least five amino acids of the segment of interest in single letter code in the segment textbox. Enter the length of the segment in the textbox that follows. Rest of the instructions are same as that mentioned in the Figure . In this method it is assumed that the five amino acid region is a conserved one and do not encounter mutations. If there are mutations within the first five amino acids then that particular sequence will not be sorted by the program.