2) Protein identification and analysis tools on the ExPASy server. Gasteiger, 

3) E. et. al. In J. M. Walker (Ed.) The proteomics protocols handbook. Totowa, New Jersey: Humana Press Inc. 2005. 

4) Glycoform and Net Charge Heterogeneity in gp120 Immunogens Used in HIV Vaccine Trials. 2012.    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3425498/ 4) Basic Local Alignment Search Tool. National Center for Biotechnology Information. 2012. http://www.ncbi.nlm.nih.gov/blast/Blast.cgi

5) Influenza Virus Neuraminidase Structure and Functions. 2019. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6362415/ 

6) Influenza Virus Neuraminidase: Structure and Function. 2009. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3347517/#:~:text=in%20more%20detail.-,NEURAMINIDASE%20STURCTURE,head%20to%20the%20transmembrane%20domain.

7) Protein Data Bank. https://www.rcsb.org/ 

8) Basic Local Alignment Search Tool. National Center for Biotechnology Information. 2012. http://www.ncbi.nlm.nih.gov/blast/Blast.cgi 

9) Jana Pokorná, Petr Pachl, Elena Karlukova., 2018.Kinetic, Thermodynamic, and Structural Analysis of Drug Resistance Mutations in Neuraminidase from the 2009 Pandemic Influenza Virus. Viruses 339: 1-15.