Download MendeleyStructure of archaeal glyoxylate reductase from Pyrococcus horikoshii OT3 complexed with nicotinamide adenine dinucleotide phosphate.
Yoshikawa, S., Arai, R., Kinoshita, Y., Uchikubo-Kamo, T., Wakamatsu, T., Akasaka, R., Masui, R., Terada, T., Kuramitsu, S., Shirouzu, M., Yokoyama, S.(2007) Acta Crystallogr D Biol Crystallogr 63: 357-365
- PubMed: 17327673
- DOI: https://doi.org/10.1107/S0907444906055442
- Primary Citation of Related Structures:
2DBQ, 2DBR, 2DBZ - PubMed Abstract:
Glyoxylate reductase catalyzes the NAD(P)H-linked reduction of glyoxylate to glycolate. Here, the 1.7 A crystal structure of glyoxylate reductase from the hyperthermophilic archaeon Pyrococcus horikoshii OT3 complexed with nicotinamide adenine dinucleotide phosphate [NADP(H)] determined by the single-wavelength anomalous dispersion (SAD) method is reported. The monomeric structure comprises the two domains typical of NAD(P)-dependent dehydrogenases: the substrate-binding domain (SBD) and the nucleotide-binding domain (NBD). The crystal structure and analytical ultracentrifugation results revealed dimer formation. In the NADP(H)-binding site, the pyrophosphate moiety and the 2'-phosphoadenosine moiety are recognized by the glycine-rich loop (residues 157-162) and by loop residues 180-182, respectively. Furthermore, the present study revealed that P. horikoshii glyoxylate reductase contains aromatic clusters and has a larger number of ion pairs and a lower percentage of hydrophobic accessible surface area than its mesophilic homologues, suggesting its thermostability mechanism.
Organizational Affiliation:
Protein Research Group, RIKEN Genomic Sciences Center, Tsurumi, Yokohama 230-0045, Japan.
