Refined structures of the active Ser83-->Cys and impaired Ser46-->Asp histidine-containing phosphocarrier proteins.
Liao, D.I., Herzberg, O.(1994) Structure 2: 1203-1216
- PubMed: 7704530 
- DOI: https://doi.org/10.1016/s0969-2126(94)00122-7
- Primary Citation of Related Structures:  
1SPH, 2HPR - PubMed Abstract: 
The histidine-containing phosphocarrier protein (HPr) functions in the bacterial phosphoenolpyruvate:sugar phosphotransferase system (PTS). His15 on HPr accepts a phosphoryl group from Enzyme I and transfers it to the Enzyme IIA domain of a sugar-specific PTS permease. In addition, HPrs from Gram-positive bacteria undergo phosphorylation on a serine residue, Ser46, which inhibits phosphorylation at His15 and sugar transport. The questions to be addressed at the molecular level are: what is the mechanism of each of the phosphoryl transfers and what conformational transitions are associated with each event?
Organizational Affiliation: 
Center for Advanced Research in Biotechnology, University of Maryland Biotechnology Institute, Rockville 20850.