Structural Consequences of the B5 Histidine --> Tyrosine Mutation in Human Insulin Characterized by X-Ray Crystallography and Conformational Analysis.
Tang, L., Whittingham, J.L., Verma, C.S., Caves, L.S.D., Dodson, G.G.(1999) Biochemistry 38: 12041
- PubMed: 10508408 
- DOI: 10.1021/bi990700k
- Primary Citation of Related Structures:  
1QIZ, 1QIY, 1QJ0 - PubMed Abstract: 
The addition of phenols to hexameric insulin solutions produces a particularly stable hexamer, resulting from a rearrangement in which residues B1-B8 change from an extended conformation (T-state) to form an alpha-helix (R-state). The R-state is, in ...