7wmk

PQQ-dependent alcohol dehydrogenase complexed with PQQ

spinqualitylabelsall models 7wmk, resolution 1.47Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7wmk is a 1 chain structure with sequence from Devosia albogilva. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.47Å Ligands: ACT, CA, CL, EPE, NA, PQQ Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed The pyrroloquinoline quinone (PQQ)-dependent dehydrogenase DepA detoxifies deoxynivalenol (DON) by converting the C3-OH into a keto group. Herein, two crystal structures of DepA and its complex with PQQ were determined, together with biochemical evidence confirming the interactions of DepA with PQQ and DON and revealing a unique tyrosine residue important for substrate selection. Furthermore, four loops over the active site essential for DepA activity were identified, of which three loops were stabilized by PQQ, and the fourth loop invisible in both structures was considered important for binding DON, together constituting a lid for the active site. Preliminary engineering of the loop showed its potential for enzyme improvement. This study provides structural insights into how a PQQ-dependent dehydrogenase is equipped with the function of DON conversion and for the first time shows the necessity of a lid structure for PQQ-dependent dehydrogenase activity, laying foundation for structure-based design to enhance catalysis efficiency. Structure-Function Analysis of a Quinone-Dependent Dehydrogenase Capable of Deoxynivalenol Detoxification.,Yang H, Yan R, Li Y, Lu Z, Bie X, Zhao H, Lu F, Chen M J Agric Food Chem. 2022 Jun 8;70(22):6764-6774. doi: 10.1021/acs.jafc.2c01083., Epub 2022 May 25. PMID:35613468 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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