Protonation State of an Important Histidine from High Resolution Structures of Lytic Polysaccharide Monooxygenases oleh Sanchari Banerjee, Sebastian J. Muderspach, Tobias Tandrup, Kristian Erik Høpfner Frandsen, Raushan K. Singh, Johan Ørskov Ipsen, Cristina Hernández-Rollán, Morten H. H. Nørholm, Morten J. Bjerrum, Katja Salomon Johansen, Leila Lo Leggio