5OC1
Crystal structure of aryl-alcohol oxidase from Pleurotus eryngii in complex with p-anisic acid
Summary for 5OC1
Entry DOI | 10.2210/pdb5oc1/pdb |
Descriptor | Aryl-alcohol oxidase, 4-METHOXYBENZOIC ACID, FLAVIN-ADENINE DINUCLEOTIDE, ... (5 entities in total) |
Functional Keywords | aao, lignin degradation, pleurotus eryngii, oxidoreductase, flavoprotein |
Biological source | Pleurotus eryngii |
Total number of polymer chains | 1 |
Total formula weight | 62329.70 |
Authors | Carro, J.,Martinez-Julvez, M.,Medina, M.,Martinez, A.,Ferreira, P. (deposition date: 2017-06-29, release date: 2017-11-01, Last modification date: 2024-01-17) |
Primary citation | Carro, J.,Martinez-Julvez, M.,Medina, M.,Martinez, A.T.,Ferreira, P. Protein dynamics promote hydride tunnelling in substrate oxidation by aryl-alcohol oxidase. Phys Chem Chem Phys, 19:28666-28675, 2017 Cited by PubMed Abstract: The temperature dependence of hydride transfer from the substrate to the N5 of the FAD cofactor during the reductive half-reaction of Pleurotus eryngii aryl-alcohol oxidase (AAO) is assessed here. Kinetic isotope effects on both the pre-steady state reduction of the enzyme and its steady-state kinetics, with differently deuterated substrates, suggest an environmentally-coupled quantum-mechanical tunnelling process. Moreover, those kinetic data, along with the crystallographic structure of the enzyme in complex with a substrate analogue, indicate that AAO shows a pre-organized active site that would only require the approaching of the hydride donor and acceptor for the tunnelled transfer to take place. Modification of the enzyme's active-site architecture by replacement of Tyr92, a residue establishing hydrophobic interactions with the substrate analogue in the crystal structure, in the Y92F, Y92L and Y92W variants resulted in different temperature dependence patterns that indicated a role of this residue in modulating the transfer reaction. PubMed: 29043303DOI: 10.1039/c7cp05904c PDB entries with the same primary citation |
Experimental method | X-RAY DIFFRACTION (2.3 Å) |
Structure validation
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