**Acknowledgements**

The authors would like to acknowledge the Department of Biotechnology (DBT), Government of India for the infrastructural facilities. Dr. Urmila Kulkarni-Kale acknowledges Centre of Excellence (CoE) Grant to the Bioinformatics Centre from the DBT. Sunitha M Kasibhatla acknowledges the support of Bioinformatics Resources and Applications Facility (BRAF), C-DAC, Pune. Vaishali P. Waman acknowledges DBT fellowship (2010–2015).
