Genetics Home Reference (April 4th, 2017). "What are proteins and what do they do?". National Institute of Health. National Library of Medicine. Retrieved 11 ஏப்ரல் 2017. {{cite web}}: Check date values in: |date= (help)
particlesciences.com
"Protein Structure". Technical Brief: 2009: Volume 8. Particle Sciences, Drug Developement Services. Retrieved 11 ஏப்ரல் 2017.