The interactions between biomolecules and water of hydration play a pivotal role in molecular biology.
Fossey John S, Chen Wenbo, Wang Xin, Wang Yan-Fang, Yuan Xiu-Xiang, Wong Ning-Bew 2010, 'An ab initio and AIM investigation into the hydration of 2-thioxanthine', Chemistry Central Journalhttp://journal.chemistrycentral.com/content/4/1/6. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The structure also contains a disordered molecule of water of hydration, lying close to a special position, with partial occupancy.
Fei-Fei Li, Hui-Ju Zhang, Li-Na Zhang 2011, 'Poly[[tetraaquatris(μ3-hexane-1,6-dicarboxylato)diterbium(III)] 0.25-hydrate]',Acta Crystallographica Section Ehttp://scripts.iucr.org/cgi-bin/paper?S1600536811007719. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)