Download MendeleyCrystal structure of a glutamate-1-semialdehyde-aminomutase from Pseudomonas aeruginosa PAO1.
Li, S., Lou, X., Xu, Y., Teng, X., Che, S., Liu, R., Bartlam, M.(2018) Biochem Biophys Res Commun 500: 804-809
- PubMed: 29684343
- DOI: https://doi.org/10.1016/j.bbrc.2018.04.163
- Primary Citation of Related Structures:
5YKR, 5YKT - PubMed Abstract:
The C5 pathway in bacteria is responsible for the synthesis of 5-aminolevulinic acid, which forms the core skeleton of cofactors required for metabolism. One of the key actors in this pathway is a pyridoxamine-5'-phosphate (PMP)/pyridoxal-5'-phosphate (PLP) dependent enzyme called glutamate-1-semialdehyde aminomutase (GSAM). In this study, we crystallized the expression product of the uncharacterized pa4088 gene from the opportunistic pathogen Pseudomonas aeruginosa PAO1. The resulting high-resolution structure confirms it to be a member of the GSAM family. Continuous electron density indicates the presence of a PLP cofactor with a Schiff base linkage between the PLP cofactor and the ε-amino group of Lys286. A crystal structure of a K286A mutant in complex with PMP is also reported. As GSAM enzymes are not present in mammalian cells, this work provides a starting point for the investigation of GSAM as a target for drug development against P. aeruginosa infection.
Organizational Affiliation:
College of Life Sciences, Nankai University, Tianjin, China.
