The two tryptophans of beta2-microglobulin have distinct roles in function and folding and might represent two independent responses to evolutionary pressure.
Raimondi, S., Barbarini, N., Mangione, P., Esposito, G., Ricagno, S., Bolognesi, M., Zorzoli, I., Marchese, L., Soria, C., Bellazzi, R., Monti, M., Stoppini, M., Stefanelli, M., Magni, P., Bellotti, V.(2011) BMC Evol Biol 11: 159-159
- PubMed: 21663612 
- DOI: 10.1186/1471-2148-11-159
- Primary Citation of Related Structures:  
3QDA - PubMed Abstract: 
We have recently discovered that the two tryptophans of human β2-microglobulin have distinctive roles within the structure and function of the protein. Deeply buried in the core, Trp95 is essential for folding stability, whereas Trp60, which is solve ...