Enhancing ubiquitin crystallization through surface-entropy reduction.
Loll, P.J., Xu, P., Schmidt, J.T., Melideo, S.L.(2014) Acta Crystallogr F Struct Biol Commun 70: 1434-1442
- PubMed: 25286958 
- DOI: 10.1107/S2053230X14019244
- Primary Citation of Related Structures:  
4PIG, 4PIH, 4PIJ - PubMed Abstract: 
Ubiquitin has many attributes suitable for a crystallization chaperone, including high stability and ease of expression. However, ubiquitin contains a high surface density of lysine residues and the doctrine of surface-entropy reduction suggests that these lysines will resist participating in packing interactions and thereby impede crystallization ...