Substitution for Asn460 cripples {beta}-galactosidase (Escherichia coli) by increasing substrate affinity and decreasing transition state stability.
Wheatley, R.W., Kappelhoff, J.C., Hahn, J.N., Dugdale, M.L., Dutkoski, M.J., Tamman, S.D., Fraser, M.E., Huber, R.E.(2012) Arch.Biochem.Biophys. 521: 51-61
- PubMed: 22446164 
- DOI: 10.1016/j.abb.2012.03.014
- Primary Citation of Related Structures:  
- PubMed Abstract: 
Substrate initially binds to β-galactosidase (Escherichia coli) at a 'shallow' site. It then moves ∼3Å to a 'deep' site and the transition state forms. Asn460 interacts in both sites, forming a water bridge interaction with the O3 hydroxyl of the gal ...