Acid-Base Catalysis and Crystal Structures of a Least Evolved Ancestral GFP-like Protein Undergoing Green-to-Red Photoconversion.
Kim, H., Grunkemeyer, T.J., Modi, C., Chen, L., Fromme, R., Matz, M.V., Wachter, R.M.(2013) Biochemistry 52: 8048-8059
- PubMed: 24134825 
- DOI: 10.1021/bi401000e
- Primary Citation of Related Structures:  
4DXN, 4DXQ, 4GOB - PubMed Abstract: 
In green-to-red photoconvertible fluorescent proteins, a three-ring chromophore is generated by the light-activated incorporation of a histidine residue into the conjugated π-system. We have determined the pH-rate profile and high- and low-pH X-ray structures of a least evolved ancestor (LEA) protein constructed in the laboratory based on statistical sequence analysis ...