The application of information technology has made the study of biology more precise and target oriented. It has many diverse areas of application.

The study of Taxonomy was initially based on morphology, anatomy, embryology, chromosome structure and number and biochemistry. Relationships among groups of animals and plants were worked out, which led to the projection of the phylogenetic tree.

But the advent of Bioinformatics has revolutionized the study of taxonomy and organic evolution. The phylogenetic relationships are established from the sequence similarities of proteins and nucleic acids. Secondly, new drugs are designed for curing many diseases by using sequence data of proteins and nucleic acids.

Many new drugs are therapeutic proteins, which interact with their respective targets. Many therapeutic proteins are chosen as the candidate drugs based on the sequence of amino acids.


The sequence of amino acids of a protein spells the 3-D structure and this structure is used to predict its possible functions.

The function of a protein projects its interaction with its targets. Out of several candidate proteins, one, having best interaction with its target and optimum beneficial effects is chosen as the final therapeutic protein.