The beginning of the thought underlying this endeavor is: Mother Nature overlaps.It created the DNA encrypted templates to utilize the functional modules of the protein structures called protein domains and linked them with high frequency mutation regions to deliver the enough diversity to the arrangement.Though the antibody traditionally belonged to the biochemistry research, after reading the DNA sequences it turned out that there are many similar domains and the most of the antibodies have little power to discriminate between them.This, caused the havoc of biochemists, who came to the point of asking: what are the means to discriminate the similar protein structures produced by Nature as the sets of: proteins families.One applicable solution came out ofbioinformatics, the computer science used to extract the information from biological relevant sequences encoded in the molecules.