Crystal structures of guinea-pig, goat and bovine alpha-lactalbumin highlight the enhanced conformational flexibility of regions that are significant for its action in lactose synthase.
Pike, A.C., Brew, K., Acharya, K.R.(1996) Structure 4: 691-703
- PubMed: 8805552 
- DOI: https://doi.org/10.1016/s0969-2126(96)00075-5
- Primary Citation of Related Structures:  
1HFX, 1HFY, 1HFZ - PubMed Abstract: 
The regulation of milk lactose biosynthesis is highly dependent on the action of a specifier protein, alpha-lactalbumin (LA). Together with a glycosyltransferase, LA forms the enzyme complex lactose synthase. LA promotes the binding of glucose to the complex and facilitates the biosynthesis of lactose. To gain further insight into the molecular basis of LA function in lactose synthase we have determined the structures of three species variants of LA.
Organizational Affiliation: 
School of Biology and Biochemistry, University of Bath, Claverton Down, UK.