Origin of exopolyphosphatase processivity: Fusion of an ASKHA phosphotransferase and a cyclic nucleotide phosphodiesterase homolog.
Alvarado, J., Ghosh, A., Janovitz, T., Jauregui, A., Hasson, M.S., Sanders, D.A.(2006) Structure 14: 1263-1272
- PubMed: 16905100 
- DOI: 10.1016/j.str.2006.06.009
- Primary Citation of Related Structures:  
1U6Z - PubMed Abstract: 
The Escherichia coli Ppx protein is an exopolyphosphatase that degrades long-chain polyphosphates in a highly processive reaction. It also hydrolyzes the terminal 5' phosphate of the modified nucleotide guanosine 5' triphosphate 3' diphosphate (pppGpp). The structure of Ppx has been determined to 1 ...