Distant Non-Obvious Mutations Influence the Activity of a Hyperthermophilic <i>Pyrococcus</i> <i>furiosus</i> Phosphoglucose Isomerase oleh Kalyanasundaram Subramanian, Karolina Mitusińska, John Raedts, Feras Almourfi, Henk-Jan Joosten, Sjon Hendriks, Svetlana E. Sedelnikova, Servé W. M. Kengen, Wilfred R. Hagen, Artur Góra, Vitor A. P. Martins dos Santos, Patrick J. Baker, John van der Oost, Peter J. Schaap